# XIII Mexican School of Particles and Fields

2-11 October 2008
San Carlos, Sonora, México
America/Hermosillo timezone
Home > Contribution List

## Contribution List

Displaying 196 contributions out of 196
Session: Beyond SM
The origin of flavor is one of the biggest mysteries of the Standard Model. Despite more than a half-century of data, we still have essentially no explanation for family replication in the Standard Model. Many theoretical models can incorporate or accommodate this replication, but very few actually explain/predict/require it. In this talk, I will describe some recent work on a possible new approac ... More
Presented by Keith DIENES on 11 Oct 2008 at 12:00
Session: Posters
Presented by Dr. Ricardo GAITAN on 9 Oct 2008 at 19:00
Session: Posters
Presented by Dr. Ricardo GAITAN on 9 Oct 2008 at 19:00
Session: Review Talks
The basic particle physics and nuclear physics concepts of 0\nu\beta\beta-decay will be discussed, followed by a discussion of experimental techniques. There are five next generation experiments, all with different technologies, that are under construction or in various stages of advanced research and development. The advantages and disadvantages of each will be discussed, as well as their status ... More
Presented by Dr. Frank AVIGNONE on 7 Oct 2008 at 10:00
Session: Posters
Presented by Mr. Saúl SÁNCHEZ MADRIGAL on 9 Oct 2008 at 19:00
Session: String Theory
Presented by Dr. Alberto GUIJOSA on 7 Oct 2008 at 18:30
Session: Posters
Presented by Nabanita DASGUPTA-SCHUBERT on 9 Oct 2008 at 19:00
Presented by Dr. Jamal JALILIAN-MARIAN on 2 Oct 2008 at 11:30
Presented by Dr. Jamal JALILIAN-MARIAN on 3 Oct 2008 at 17:00
Presented by Dr. Jamal JALILIAN-MARIAN on 4 Oct 2008 at 17:00
Session: Neutrino Physics
We derive an analytical description of neutrino oscillations in matter based on the Magnus exponential representation of the time evolution operator. Our approach is valid in a wide range of the neutrino energies and properly accounts for the modifications that the respective probability transitions suffer when neutrinos originated in different sources traverse the Earth. The present approximation ... More
Presented by Dr. Daniel SUPANITSKY on 7 Oct 2008 at 19:00
Session: Posters
Presented by Alma Dolores ROJAS PACHECO on 9 Oct 2008 at 19:00
Session: Review Talks
Presented by Dr. Alexander BUCHEL on 6 Oct 2008 at 12:30
Session: Cosmic Rays
Presented by Dr. Federico Andres SANCHEZ
Detailed account is given of the fact that the Cornell potential predicted by Lattice QCD and its recently reported exactly solvable extension to a trigonometric quark confinement potential can be placed within the context of a Coulomb-type potential in color gauge space of constant positive curvature, the 3D hypersphere. We make the case that the geometric vision on confinement provides a remarka ... More
Presented by Mariana KIRCHBACH on 10 Oct 2008 at 17:10
Session: Review Talks
Despite extensive searching at LEP and the Tevatron, the Standard Model still provides an extremely accurate description of the fundamental particles and their interactions. Yet the Standard Model raises many questions, and theories of what might lie beyond it are numerous. We will focus on the big questions: what is the nature of the Higgs boson in theories beyond the standard model and what do w ... More
Presented by Dr. John CONWAY on 11 Oct 2008 at 10:00
Session: Cosmology
In this talk we present some ideas how to unify the early Universe, that means the inflationary epoch, with the late universe, when the large scale structure formed. If the inflaton decays into another scalar field with a smaller mass, this new scalar field can work as the dark matter. In a SO(1,1) isospin unification, the scalar field can be the dark energy as well. We present the evolution of th ... More
Presented by Dr. Tonatiuh MATOS on 8 Oct 2008 at 17:00
Thirty years after the discovery of the Upsilon resonances and the bottom quark, BaBar has made the first observation of the bottomonium ground state, the eta_b. I will present details of the observation. In addition I will discuss other recent BaBar Bottomonium analyses.
Presented by Dr. Silke NELSON on 7 Oct 2008 at 19:00
The results of the Bs meson measurement in the D0 experiment are showed. This include the determination of the deltaGamma between the two states the Light and the Heavy, the determination of the Delta Ms the difference between the two mass states, the measurement of the lifetimes in hadronic and semileptonic modes. The very new measurement of the phases and amplitudes in the transversity basis are ... More
Presented by Dr. Pedro PODESTA on 7 Oct 2008 at 18:30
Session: Posters
Presented by A MOYOTL ACUAUITL on 9 Oct 2008 at 19:00
Session: RHI
I will discuss the possibilities to characterize the medium created in heavy ion collisions at RHIC and the LHC. I will focus on the opportunities that jets offer for such characterization, and comment on the problems related with background substraction.
Presented by Dr. Nestor ARMESTO on 6 Oct 2008 at 16:50
Session: Posters
Presented by Eduardo Jonathan TORRES HERRERA on 9 Oct 2008 at 19:00
Session: Posters
Presented by Carlos Eduardo VERA AGUIRRE on 9 Oct 2008 at 19:00
Session: RHI
It is been recently realized that in peripheral heavy-ion collisions, a sizable magnetic field is produced in the interaction region. Although this field becomes weak at the proper times when the chiral phase transition is believed to occur, it is still significant so as to ask whether it influences such transition. In this talk, we use the linear sigma model to study the chiral phase transition i ... More
Presented by Angel SÁNCHEZ on 7 Oct 2008 at 16:50
Session: Posters
Presented by Dr. Luis Manuel MONTANO ZETINA on 9 Oct 2008 at 19:00
Session: String Theory
Presented by Dr. Brian WECHT on 8 Oct 2008 at 18:30
Session: String Theory
Presented by Dr. Alexander BUCHEL on 7 Oct 2008 at 17:00
Session: Review Talks
The conformal window in a gauge field theory with N_f light fermions is the range of N_f values such that the theory is asymptotically free and the infrared coupling is governed by a fixed point. In an SU(N) gauge theory with N_f fermions in the fundamental representation, the conformal window ranges from 11N/2 down to some critical value N_c at which a transition is expected to one in which there ... More
Presented by Dr. Thomas APPELQUIST on 10 Oct 2008 at 10:00
Session: Neutrino Physics
We consider the impact on the properties of the dark energy component, which dominates the current expansion of the universe, due to the effects of neutrino physics. By including a large mass of the neutrinos of the order of $\Sigama_i m_i\simeq 1.8 eV$, as claimed by members of the Heidelberg-Moscow double beta decay experiment, we find that a cosmological constant is ruled out at more than $95 \ ... More Presented by Axel DE LA MACORRA PETTERSSON on 8 Oct 2008 at 19:00 Session: Posters Presented by Dr. Edgar CASIMIRO LINARES, Dr. Edgar CASIMIRO LINARES on 9 Oct 2008 at 19:00 Session: Cosmology More detailed discussion of antimatter effects in cosmology is presented. Some new phenomena are considered. Presented by Dr. Alexander DOLGOV on 10 Oct 2008 at 16:00 Presented by Dr. Daniel SUPANITSKY Session: Review Talks Existing mechanisms of creation of cosmological excess of matter over antimatter are reviewed. Particular attention is paid to the models leading to significant amount of antimatter in the universe and its observational signatures. Presented by Dr. Alexander DOLGOV on 9 Oct 2008 at 09:00 Session: Cosmology We present numerical N-body simulation studies of large-scale structure formation. The main purpose of these studies is to analyze the several models of dark matter and the role they played in the process of large-scale structure formation. We analyze the standard and more successful case, i.e., the cold dark matter with cosmological constant (LCDM). We compare the results of this model with the c ... More Presented by Mario Alberto RODRIGUEZ-MEZA on 6 Oct 2008 at 16:00 Session: Posters Presented by Dr. Humberto SALAZAR on 9 Oct 2008 at 19:00 on 8 Oct 2008 at 11:50 Session: Hadronic Physics Heavy-meson decays are important sources of information about scalar resonances. Hopefully, they may also shed light into meson-meson scattering amplitudes. In a recent work, our group has studied the low-energy sector of the reaction D+ → K- p+ p+ by means of chiral SU(3)×SU(3) effective lagrangians, which include scalar resonances and allow a consistent treatment of the primary weak vertex. I ... More Presented by Dr. Manoel Roberto ROBILOTTA on 7 Oct 2008 at 17:00 Presented by Alejandra PARRA FLORES Session: Posters Presented by Ms. Agnieszka LUSZCZAK on 9 Oct 2008 at 19:00 Session: Hadronic Physics on 10 Oct 2008 at 19:00 Session: Posters Presented by Cliffor Benjamin COMPEAN JASSO on 9 Oct 2008 at 19:00 Session: Neutrino Physics I will discuss the effects of heavy Majorana neutrinos with sub-TeV masses. I will argue that the mere presence of these particles would be a signal of physics beyond the minimal seesaw mechanism. Using an effective Lagrangian approach I will describe the most important interactions of these particles and discuss to what extent these interactions can be probed at the LHC. Presented by Dr. Jose WUDKA on 8 Oct 2008 at 17:00 Session: Posters Presented by Hector NOVALES SANCHEZ on 9 Oct 2008 at 19:00 Session: Posters Presented by Carlos VAQUERA on 9 Oct 2008 at 19:00 Session: Neutrino Physics Based on the fact that the only experimental data we have so far for physics beyond the Standard Model is that of neutrino physics, we impose a constraint for any addition not to introduce new higher scales. We present a model consistent with this restriction that includes electroweak scale right-handed neutrinos and a lepton number violating singlet scalar field. We also discuss some of its inter ... More Presented by Dr. Alfredo ARANDA on 7 Oct 2008 at 18:30 I will give a pedagogical review of the Standard Model predictions for Higgs boson production and decay at the LHC. The theoretical shortcomings of the single Higgs boson model will be discussed and some alternative mechanisms of electroweak symmetry breaking presented. Presented by Dr. Sally DAWSON on 3 Oct 2008 at 11:30 I will give a pedagogical review of the Standard Model predictions for Higgs boson production and decay at the LHC. The theoretical shortcomings of the single Higgs boson model will be discussed and some alternative mechanisms of electroweak symmetry breaking presented. Presented by Dr. Sally DAWSON on 4 Oct 2008 at 11:30 I will give a pedagogical review of the Standard Model predictions for Higgs boson production and decay at the LHC. The theoretical shortcomings of the single Higgs boson model will be discussed and some alternative mechanisms of electroweak symmetry breaking presented. Presented by Dr. Sally DAWSON on 5 Oct 2008 at 11:30 This series of lectures are oriented mainly to particle physics students, covering, on a pedestrian level, the basics and some general model buildings aspects of the Standard Model of the electroweak interactions. Presented by Dr. Abdel PÉREZ-LORENZANA on 2 Oct 2008 at 09:00 This series of lectures are oriented mainly to particle physics students, covering, on a pedestrian level, the basics and some general model buildings aspects of the Standard Model of the electroweak interactions. Presented by Dr. Abdel PÉREZ-LORENZANA on 2 Oct 2008 at 12:30 This series of lectures are oriented mainly to particle physics students, covering, on a pedestrian level, the basics and some general model buildings aspects of the Standard Model of the electroweak interactions. Presented by Dr. Abdel PÉREZ-LORENZANA on 3 Oct 2008 at 12:30 Session: Posters Presented by Jose Halim MONTES DE OCA YEMHA on 9 Oct 2008 at 19:00 Session: Posters Several methods for the computation of the general spin 1/2 amplitude are studied. Presented by Dr. Matías MORENO on 9 Oct 2008 at 19:00 We formulate the Josephson effect in a field theoretic language which affordsa straightforward generalization to the non-abelian case. Our formalisminterprets Josephson tunneling as the excitation of pseudo-Goldstone bosons. We discuss applicationsto various non-abelian symmetry breaking systems in particle and condensedmatter physics. Presented by Rohana WIJEWARDHANA on 10 Oct 2008 at 16:20 Session: Posters Presented by Dr. Le LE DUC THONG on 9 Oct 2008 at 19:00 Session: Hadronic Physics We calculate decay constants of vector and axial-vector mesons from decays$\tau^-\to V^-\nu_\tau$and$\tau^-\to A^-\nu_\tau$, respectively, considering the effects of the anstability of vector and axial-vector mesons, and the case of strange axial-mesons the effect of$K_{1A}-K_{1B}$mixing. Moreover, we calculate the impact in some branching ratios of$Bdecays. Presented by Dr. German CALDERON on 10 Oct 2008 at 17:30 Session: RHI The ALICE experiment is intensively pursuing preparation for first physics data with the Large hadron Collider. After a brief introduction to the ALICE experiment and its present status the following topics will be addressed:. The wide scope of detector related and reconstruction linked issues like the alignements, reconstruction efficiency, systematic errors etc. The operation of the LHC in ... More Presented by Dr. Guy PAIC on 7 Oct 2008 at 19:20 Session: Posters Presented by Alfonso DIAZ FURLONG on 9 Oct 2008 at 19:00 Session: String Theory Presented by Dr. Elena CACERES on 8 Oct 2008 at 17:00 Session: Cosmology Se presentará una reseña sobre los principales logros y debilidades del escenario actual de formación y evolución de estructuras cósmicas, principalmente de las galáxias. La reseña estará orientada a las implicaciones que tiene el tipo de materia oscura sobre las propiedades y evolución de las galáxias. Se trataran en particular los casos de partículas exóticas frias y tibias. Presented by Dr. Vladimir AVILA-REESE Session: Beyond SM In this talk we discuss a scenario consisting of an effective 4D theory containing fundamental and composite fields. The strong dynamics sector responsible for the compositeness is assumed to be of extra dimensional origin. In the 4D effective theory the SM fermion and gauge fields are taken as fundamental fields. The scalar sector of the theory resembles a bosonic topcolor in the sense there are ... More Presented by Dr. Roberto NORIEGA PAPAQUI on 10 Oct 2008 at 18:30 Session: Posters Presented by René ANGELES on 9 Oct 2008 at 19:00 Session: Beyond SM It is well known that the Higgs sector is still a lacking piece of the Standard Model. This sector governs the electroweak symmetry breaking and gives masses of quarks and leptons. Furthermore, the quadratic divergent correction to the Higgs mass strongly suggest the existence of new physics at the TeV scale. For this purpose, a lot of scenarios beyond the Standard Model have been proposed. In thi ... More Presented by Dr. Linares ROMAN on 10 Oct 2008 at 17:15 Session: Beyond SM I will discuss the framework of General Gauge Mediation developed with Seiberg and Shih to investigate predictions of all Gauge Mediated models. Presented by Patrick MEADE on 11 Oct 2008 at 19:15 Session: Posters Presented by Jose Alexander CAICEDO on 9 Oct 2008 at 19:00 Session: Posters Presented by Ana A. AVILEZ LOPEZ on 9 Oct 2008 at 19:00 Session: Review Talks I will review the status of hard probes at RHIC. I will start with a brief introduction of the benchmark in pp and dAu collisions. Then I will discuss particle production at high transverse momentum, and photon and quarkonium production in AA collisions, with emphasis on the proposed theoretical explanations. I will end with a briefly outlook at the forthcoming experiments at the LHC. Presented by Dr. Nestor ARMESTO on 9 Oct 2008 at 10:00 Presented by Dr. Jeffrey RICHMAN on 3 Oct 2008 at 10:00 Presented by Dr. Jeffrey RICHMAN on 4 Oct 2008 at 10:00 Presented by Dr. Jeffrey RICHMAN on 5 Oct 2008 at 10:00 Session: Hadronic Physics Presented by Carlos RAMIREZ on 10 Oct 2008 at 18:30 Session: Posters Presented by Yambazi BANDA on 9 Oct 2008 at 19:00 Session: Review Talks The discovery of a Higgs-like particle at the LHC is highly anticipated. I will review the status of current limits on Higgs boson properties and discuss what we can expect to learn about Higgs couplings at the LHC. The possibility of distinguishing between a Standard Model Higgs boson and other mechanisms for electroweak symmetry breaking will be examined. Presented by Dr. Sally DAWSON on 7 Oct 2008 at 12:30 Session: Posters Presented by Ezequiel RODRIGUEZ JAUREGUI on 9 Oct 2008 at 19:00 Session: Neutrino Physics The quest for astrophysical neutrinos with energies above TeV`s is the major goal of several astroparticle physics experiments around the world. The detection of these elusive particles would open a new astronomical window to the universe at high energies, in particular, to very hot and distant regions of the cosmos not accessible with TeVÂ´s and ultra high energy cosmic rays. In this talk, a br ... More Presented by Dr. Juan Carlos ARTEAGA-VELÁZQUEZ, Dr. Juan Carlos ARTEAGA VELAZQUEZ on 8 Oct 2008 at 17:30 Session: Review Talks Sometime14 \times 10^9$years ago, the Universe started in a Big Bang. In that moment, the huge amount of energy liberated in the explosion coaleced forming equal quantities of matter amd antimatter. However, as the Universe expanded and cooled, its composition changed in such a way that, at about one second after the explosion, all the antimatter just disapeared, leaving matter to form the Univ ... More Presented by Dr. Javier MAGNIN on 9 Oct 2008 at 11:30 Session: Cosmology In this talk we discuss the viability of a dark matter candidate, called the lightest holographic particle (LHP), that arises within the context of dual 5D AdS/CFT models, where the Higgs boson is identified as a psudogoldstone boson of a (conformal) strongly interacting sector. Constraints on the model from collider physics and cosmology are discussed. Presented by Dr. Lorenzo DIAZ-CRUZ on 8 Oct 2008 at 18:30 Session: Cosmology We study the recent cosmic evolution using the induced gravity theory in which a Higgs field non-minimally couples to gravity. After the symmetry breaking the field goes to its true vacuum value, a process that induces the creation of a new Higgs particle that can account as dark matter. On the other hand, the evolution of the Higgs field acts as a quintessence field. Taking into account the exper ... More Presented by Dr. Jorge CERVANTES on 7 Oct 2008 at 17:00 Session: Cosmology Presented by Axel DE LA MACORRA PETTERSSON on 7 Oct 2008 at 18:30 Session: Posters Presented by Uvaldo REYES on 9 Oct 2008 at 19:00 Session: Posters Presented by Maria del Rocio APARICIO MENDEZ, Ms. María del Rocío APARICIO MÉNDEZ on 9 Oct 2008 at 19:00 Session: String Theory Presented by Dr. José Daniel EDELSTEIN on 7 Oct 2008 at 16:00 The main goal of this series of mini-lectures is to provide an inside look at the reconstruction of particle jets in hadronic final states in the proton-proton collisions at the Large Hadron Collider (LHC), which is expected to begin operations for physics end of September 2008 at CERN, the European Center for Particle Physics Research. These jets are produced in basically all collision channels, ... More Presented by Dr. Peter LOCH on 4 Oct 2008 at 12:30 The main goal of this series of mini-lectures is to provide an inside look at the reconstruction of particle jets in hadronic final states in the proton-proton collisions at the Large Hadron Collider (LHC), which is expected to begin operations for physics end of September 2008 at CERN, the European Center for Particle Physics Research. These jets are produced in basically all collision channels, ... More Presented by Dr. Peter LOCH on 5 Oct 2008 at 12:30 The main goal of this series of mini-lectures is to provide an inside look at the reconstruction of particle jets in hadronic final states in the proton-proton collisions at the Large Hadron Collider (LHC), which is expected to begin operations for physics end of September 2008 at CERN, the European Center for Particle Physics Research. These jets are produced in basically all collision channels, ... More Presented by Dr. Peter LOCH on 6 Oct 2008 at 17:00 Session: Review Talks Recent years have seen significant advances in numerical studies of QCD. Particularly in the heavy-quark sector, lattice QCD has matured into a precision tool for confronting experimental measurements of nonperturbative QCD. In the light-quark sector, and especially in the case of baryon properties, the field has not yet reached this level of precision. Upon a brief introduction to the methods of ... More Presented by Daniel ROSS YOUNG on 11 Oct 2008 at 09:00 Session: Review Talks The ultrarelativistic heavy ion collisions have completed 25 years of continuous efforts in theory and experiments. In this years a jump of a factor of ~20 in the center of mass energy has been achieved, and today we are looking to the probably last enrgy jump of ~25 to happen at the Large Hadron Collider (LHC) in CERN. The wealth of data accumulated is enormous and has open some windows in our k ... More Presented by Dr. Guy PAIC on 8 Oct 2008 at 10:00 Session: Posters Presented by Vladimir CUESTA SÁNCHEZ on 9 Oct 2008 at 19:00 Session: Posters Presented by Juan Carlos GOMEZ IZQUIERDO on 9 Oct 2008 at 19:00 Session: Neutrino Physics A variety of lepton flavour violating effects related to the recent discovery of neutrino oscillations and mixing is here systematically discussed in terms of an S3 flavour permutational symmetry. After a brief updated review of some relevant results on neutrino masses and mixings, that had been derived in the framework of a minimal S3-invariant extension of the Standard Model, we will give explic ... More Presented by Prof. Alfonso MONDRAGON BALLESTEROS on 7 Oct 2008 at 17:30 Session: Review Talks The AdS/CFT correspondence between Anti-de Sitter space and conformal gauge theories provides an analytically tractable approximation to QCD in the regime where the QCD coupling is large and constant. "Light-front Holography" is a remarkable feature of AdS/QCD: it allows hadronic amplitudes in the AdS fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in phy ... More Presented by Dr. Stan BRODSKY on 10 Oct 2008 at 09:00 Session: Posters Presented by Shoaib MUNIR on 9 Oct 2008 at 19:00 Session: Posters Presented by Roger Jose; HERNANDEZ PINTO on 9 Oct 2008 at 19:00 Session: Posters Presented by Melina GOMEZ BOCK on 9 Oct 2008 at 19:00 on 8 Oct 2008 at 11:30 Presented by Dr. Cinzia DE DONATO Session: Neutrino Physics The origin of neutrino mass is usually attributed to a seesaw mechanism, either through a heavy Majorana fermion singlet (version 1) or a heavy scalar triplet (version 2). Recently, the idea of using a heavy Majorana fermion triplet (version 3) has gained some attention. This is a review of the basic idea involved, its U(1) gauge extension, and some recent developments. Presented by Dr. Ernest MA on 7 Oct 2008 at 16:00 Session: Review Talks Presented by Dr. Boris KAYSER on 7 Oct 2008 at 09:00 Session: Posters Presented by Rodolfo Enrique BARRADAS PALMEROS on 9 Oct 2008 at 19:00 Session: Beyond SM The quark top stands out as the heaviest elementary particle known to date. Because its mass is of order of the electroweak symmetry breaking (EWSB)energy scale, this article is expected to play an essential role in the mechanism of EWSB. In particular, since the top quark lives very shortly and almost all the time decays into a b quark and a W boson, as predicted by the standard model (SM), new p ... More Presented by Miguel Angel PEREZ on 11 Oct 2008 at 13:45 Presented by Dr. Lorenzo DIAZ-CRUZ An account will be given of recent results and issues arising from QCD modeling embedded in the ladder-rainbow truncation of the Dyson-Schwinger equations of QCD. The emphasis will be upon meson properties and decays. Specific topics will include dynamical chiral symmetry breaking, light flavor mixing in singlet and non-singlet channels, and extensions to heavy quark mesons. Presented by Peter TANDY on 9 Oct 2008 at 16:20 Session: Neutrino Physics Non-standard interactions (NSI) arise naturally in different models of physics beyond the Standard Model, and they can have an important influence in the solar neutrino analysis. In this talk, after a discussion of the solar neutrino data I will concentrate in present and future low-energy experiments and their sensitivity to NSI. The current status of NSI constraints will be introduced and it wil ... More Presented by Dr. Omar MIRANDA on 6 Oct 2008 at 16:00 Session: Posters Presented by Ernesto Alejandro BLANCO COVARRUBIAS on 9 Oct 2008 at 19:00 on 9 Oct 2008 at 21:00 Session: Posters Presented by Xiomara GUTIERREZ GUERRERO on 9 Oct 2008 at 19:00 on 9 Oct 2008 at 21:00 It is shown that baryon chiral perturbation theory, i.e., the low-energy effective theory for pions and nucleons in QCD, has its condensed matter analog: A low-energy effective theory describing magnons as well as holes (or electrons) doped into antiferromagnets. We briefly present a symmetry analysis of the Hubbard and$t-J$-type models, and review the construction of the leading terms in the eff ... More Presented by Christoph HOFMANN on 11 Oct 2008 at 17:10 Session: Review Talks The Standard Model of particle physics represents a remarkable achievement on the search for an understanding of the fundamental interactions and constituents of matter. Nevertheless, it has a limited capability to answer some of our more fundamental questions about the nature of physics at shorter distances. Thus, many theorist do believe the Standard Model is but an intermediate stage on a longe ... More Presented by Dr. Abdel PEREZ-LORENZANA on 10 Oct 2008 at 11:30 Session: RHI Presented by Dr. Andrés SANDOVAL on 9 Oct 2008 at 16:50 The confidence we have now-a-days in the quantum field theory stems, between other important results, from the fact that it reduces to the classical calculations in the appropiate regimes. This fact has been exemplified in more elementary textbooks of the area for the case of the Coulombian scattering: the differential cross section of the scattering in the lowest order in perturbation theory, equ ... More Presented by Gabriela MURGUÍA on 11 Oct 2008 at 18:30 Session: Cosmology During a first-order phase transition, gravitational radiation is generated either by bubble collisions or by turbulence. For phase transitions which took place at the electroweak scale and beyond, the signal is expected to be in the sensitivity range of interferometers such as LISA or BBO. In this talk we review the generation of gravitational waves and discuss the dependence of the spectrum on t ... More Presented by Ariel MEGEVAND on 11 Oct 2008 at 19:30 Session: Posters Presented by Mr. Selim GÓMEZ on 9 Oct 2008 at 19:00 Presented by Prof. Arnulfo ZEPEDA Session: Beyond SM Finite Unified Theories (FUTs) are N=1 supersymmetric Grand Unified Theories that can be made all-loop finite. The requirement of all-loop finiteness leads to a severe reduction of the free parameters of the theory and, in turn, to a large number of predictions. We investigate these theories in the context of low-energy phenomenology observables. We present a detailed scanning of the all-loop fini ... More Presented by Dr. Myriam MONDRAGON CEBALLOS on 10 Oct 2008 at 19:15 Session: RHI I will review the latest developments in the high energy limit of QCD and describe the experimental signatures of this new and novel kinematic regime. It is expected that a hadron or nucleus at high energy becomes a Color Glass Condensate (CGC), a dense system of gluons which controls the high energy limit of hadronic/nuclear collisions. I focus on single inclusive particle production in deuteron ... More Presented by Dr. Jamal JALILIAN-MARIAN on 10 Oct 2008 at 19:20 Session: Hadronic Physics We will review experimental results obtained in the last few years on charmed hadrons, both mesons and baryons. The B-Factories discovered several charmonion-like states, the nature of some of them still under discussion. New$D_s$states where observed by several experiments. In the baryon sector, new studies on known baryons were performed as well as several new (excited) states were found. Presented by Dr. Jurgen ENGELFRIED on 7 Oct 2008 at 17:30 Lecture 1: Parton description of hadron-hadron collisions Deep inelastic scattering + measurement of parton distributions Altarelli-Parisi evolution Lecture 2: Jets in e+e- Altarelli-Parisi evolution of jets Jets in hadron-hadron collisions Parton showers Lecture 3: A littl ... More Presented by Dr. Michael PESKIN on 3 Oct 2008 at 09:00 Lecture 1: Parton description of hadron-hadron collisions Deep inelastic scattering + measurement of parton distributions Altarelli-Parisi evolution Lecture 2: Jets in e+e- Altarelli-Parisi evolution of jets Jets in hadron-hadron collisions Parton showers Lecture 3: A littl ... More Presented by Dr. Michael PESKIN on 4 Oct 2008 at 09:00 Lecture 1: Parton description of hadron-hadron collisions Deep inelastic scattering + measurement of parton distributions Altarelli-Parisi evolution Lecture 2: Jets in e+e- Altarelli-Parisi evolution of jets Jets in hadron-hadron collisions Parton showers Lecture 3: A littl ... More Presented by Dr. Michael PESKIN on 5 Oct 2008 at 09:00 Session: String Theory Many low dimensional condensed matter systems exhibit zero temperature phase transitions driven by quantum fluctuations. These are known as “quantum” phase transitions. The description of such transitions is beyond the usual Landau-Ginzburg-Wilson paradigm of a single order parameter. At criticality, such systems exhibit novel behavior including the appearance of fractional statistics, ga ... More Presented by Dr. Samuel VAZQUEZ on 6 Oct 2008 at 16:00 Session: Posters Presented by Eric Josafat PULIDO PADILLA on 9 Oct 2008 at 19:00 Session: Hadronic Physics Some implications of the textures of the mass matrices for the flavor mixing matrix V are reviewed. Constraints on the structure of the mass matrices are given using some of the experimently measured properties of V and the quark masses at 2 GeV and MZ energy scales. In addition, to the Fritzsch and Stech type mass matrices, a new type of mass matrix (designated as "CGS") is considered. The CGS ty ... More Presented by Dr. Virendra GUPTA on 10 Oct 2008 at 17:00 Session: Review Talks The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National laboratory has been in operation for almost a decade. It was designed to create the Quark-Gluon Plasma (QGP), the primordial state of matter which must have existed immediately after the Big Bang. I will give an overview of the physics explored at RHIC, focusing on the pre-collision stage and the early times right after the collisio ... More Presented by Dr. Jamal JALILIAN-MARIAN on 8 Oct 2008 at 09:00 Session: Beyond SM Volume stabilization in models with flat extra dimension could follow from vacuum energy residing in the bulk when translational invariance is spontaneously broken. We study a simple toy model that exemplifies this mechanism which considers a massive scalar field with non trivial boundary conditions at the end points of the compact space, and includes contributions from brane and bulk cosmological ... More Presented by Dr. Eli SANTOS on 9 Oct 2008 at 16:30 Session: Review Talks I shall give a brief exposition of chiral dynamics and unitarity in coupled channels to deal with hadron interactions. Explicit examples will be given for meson baryon interaction showing how some resonances are dynamically generated, in particular two Lambda(1405) states for which some experimental evidence has been found. Similarly the interaction of vector mesons with pseudoscalars leads to axi ... More Presented by Dr. Eulogio OSET on 9 Oct 2008 at 12:30 Session: Posters Presented by Oscar Rene SALCIDO VALLE on 9 Oct 2008 at 19:00 Session: Hadronic Physics It is an experimental evidence that all baryons are created polarized from unpolarized p-nucleus collisions. So far, the origin of this polarization remains unexplained in spite of the experimental evidences accumulated in the past thirty years. Up to these days, (( is the most studied baryon for polarization, for it is copiously produced in p-nucleus collisions at the energies of the principal hi ... More Presented by Dr. Julian FELIX on 8 Oct 2008 at 18:30 Session: RHI In this talk, I will present a short introduction to the AdS/CFT correspondence and show why it might be a useful tool to study certain strongly coupled gauge theories. In this context, I will show some results related to screening and energy loss of heavy probes traversing an N=4 super-Yang-Mills plasma, which might be helpful for understanding RHIC physics. Presented by Dr. Mariano CHERNICOFF on 6 Oct 2008 at 16:00 Presented by Reyna Xoxocotzi AGUILAR Session: Beyond SM Fifteen years following the first glimpses of the top quark at Fermilab's Tevatron, physicists are now able to explore top quark physics with substantial precision. With almost 30 times the data of Run 1, we are learning much about the nature of this peculiarly heavy quark, while we are searching for hints of physics beyond the Standard Model in the top quark sector. I will present recent results ... More Presented by Robin ERBACHER, Robin ERBACHER on 10 Oct 2008 at 16:30 Session: Review Talks The BaBar Collaboration submitted more than 90 new results to ICHEP 2008 - this summer's major conference in high energy physics. In my presentation I will highlight many of these measurements and discuss new results in bottomonium spectroscopy, the decays of charm mesons, the physics of B mesons as well as new measurements on heavy lepton decays. Presented by Dr. Klaus HONSCHEID on 10 Oct 2008 at 12:30 Session: Cosmic Rays Presented by Mr. Benjamin MORALES Session: RHI Soft (i.e. low momentum) hadrons constitute the bulk of the particles produced in relativistic heavy ion collisions and they are therefore essential to characterize the system created in these reactions. For the more central (i.e. small impact parameter) collisions and/or at the higher center-of-mass energies, where the higher temperatures and energy densities are attained, it is expected on the b ... More Presented by Dr. Francesco PRINO on 8 Oct 2008 at 18:30 Session: Posters Presented by Dupret Alberto SANTANA BEJARANO on 9 Oct 2008 at 19:00 Session: Hadronic Physics We discuss some aspects involved in the study of hyperon semileptonic decays from the theoretical perspective. In order to properly analyze these decays, two major corrections should be taken into account: radiative corrections to integrated observables and effects of flavor SU(3) symmetry breaking to weak form factors. We provide a detailed discussion on the current status of these issues. Presented by Dr. Ruben FLORES MENDIETA on 8 Oct 2008 at 17:00 Session: Posters Presented by Ernesto German DELGADO ACOSTA on 9 Oct 2008 at 19:00 Dyson-Schwinger equations as a semi-analytical tool have given access, for the first time, to the deep infrared region of QCD (or Yang-Mills theory) in the Landau gauge. In the so-called ghost dominance approximation, even a very simple analytical solution exists. Recent efforts have gone into repeating this success for QCD in the Coulomb gauge, the reason being that the color-Coulomb potential ap ... More Presented by Prof. Axel WEBER on 10 Oct 2008 at 19:20 Session: Posters Presented by Erick ALMARAZ on 9 Oct 2008 at 19:00 This course will consist of two parts. In the first part I will present some of the basic ideas of string theory, while in the second I will give a brief introduction to what is arguably the most useful tool derived from string theory to date, the so-called AdS/CFT correspondence. Presented by Dr. Mariano CHERNICOFF, Dr. Mariano CHERNICOFF on 4 Oct 2008 at 15:30 This course will consist of two parts. In the first part I will present some of the basic ideas of string theory, while in the second I will give a brief introduction to what is arguably the most useful tool derived from string theory to date, the so-called AdS/CFT correspondence. Presented by Dr. Mariano CHERNICOFF on 5 Oct 2008 at 17:00 This course will consist of two parts. In the first part I will present some of the basic ideas of string theory, while in the second I will give a brief introduction to what is arguably the most useful tool derived from string theory to date, the so-called AdS/CFT correspondence. Presented by Dr. Mariano CHERNICOFF on 5 Oct 2008 at 15:30 Session: Hadronic Physics Presented by Dr. Roelof BIJKER on 8 Oct 2008 at 17:30 I shall try to give an overview of the work realized in Mexico in the last years on non perturbative aspects of field theories, in particular on confinement and dynamical mass generation through the study of Schwinger-Dyson equations. Presented by Adnan BASHIR on 11 Oct 2008 at 19:20 Session: Posters Presented by Gilberto TETLALMATZI XOLOCOTZI on 9 Oct 2008 at 19:00 Session: Posters Presented by Jose Eduardo ROSALES QUINTERO on 9 Oct 2008 at 19:00 Session: Posters Presented by Prof. Jorge NAVARRO on 9 Oct 2008 at 19:00 Session: Review Talks In the first half of the lecture I will introduce some aspects of one of the most profound theoretical insights in modern physics: the AdS/CFT correspondence or Maldacena conjecture. I will illustrate its potential to shed light on a number of non-perturbative phenomena in non-Abelian gauge theories like QCD. I will then devote the second half of the lecture to present the extension of this framew ... More Presented by Dr. José Daniel EDELSTEIN on 6 Oct 2008 at 11:30 Session: Neutrino Physics We present an introduction to the Angra Neutrino Project and to the experiment Double Chooz. These two experimental initiatives address the study of neutrino oscillations and particularly the precise determination of the mixing angle theta_13. Both will as well explore, already in an early stage, the issue of the use of neutrino detectors to monitor the reactor fuel composition, in the context of ... More Presented by Dr. Edgar CASIMIRO LINARES, Dr. Edgar CASIMIRO LINARES on 8 Oct 2008 at 18:30 Session: Neutrino Physics The MINERvA (Main INjector ExpeRiment for ν A) collaboration (http://minerva.fnal.gov//) in a neutrino scattering experiment which uses the NuMI beamline at Fermilab. It seeks to measure low energy neutrino interactions both to support neutrino oscillation experiments and to study the strong dynamics of the nucleon and nucleus that affect these interactions. It is currently in its final prototypi ... More Presented by Dr. Julian FELIX on 7 Oct 2008 at 17:00 Session: Review Talks The current and planned neutrino physics experiments at Fermilab constitute a rich program aimed at investigating every aspect of the neutrino. The experimental design and results of the neutrino oscillation experiments MiniBooNE and MINOS, currently running, will be described. The techniques and goals of the next generation oscillation experiment, NOvA will be presented. Finally, two experiments ... More Presented by Dr. George MORFIN on 7 Oct 2008 at 11:30 Session: Posters Presented by Juan Ernesto ROBLES ACOSTA on 9 Oct 2008 at 19:00 Session: Posters Presented by Luis Juan ORTIZ VALDIVIA on 9 Oct 2008 at 19:00 Session: Review Talks JEM-EUSO is a science mission to explore extremes of the Universe. It will observe the darkside of the Earth and detects UV photons emitted from the extensive air shower caused by an extreme energy particle (about 1020 eV). Such a particle arrives almost straightly through our Milky Way Galaxy and is expected to allow us to trace the source location by its arrival direction. This nature can open t ... More Presented by Dr. Toshikazu EBISUZAKI on 7 Oct 2008 at 13:30 Session: Posters Presented by Antonio DOBADO on 9 Oct 2008 at 19:00 Dynamical chiral symmetry breaking and confinement are two crucial features of Quantum Chromodynamics responsible for the nature of the hadron spectrum. These phenomena, presumably coincidental, can account for 98% of the mass of our visible universe. In this set of lectures, I shall present an introductory review of them in the light of the Schwinger-Dyson equations. Presented by Dr. Alfredo RAYA on 2 Oct 2008 at 10:00 Presented by Dr. Alfredo RAYA on 2 Oct 2008 at 15:30 Presented by Dr. Alfredo RAYA on 3 Oct 2008 at 15:30 Session: RHI Presented by Dr. Mario Ivan MARTINEZ HERNANDEZ on 7 Oct 2008 at 18:30 Session: Beyond SM We study feasible extensions of the Higgs sector beyond SM. Specifically we study the charged Higgs as signal of new physics in the framework of supersymmetry, not supersymmetry and some cases from extra dimensions. We present the boson sector and the Yukawa sector of the scalars models. We research the phenomenology of a model of electroweak scale right-handed neutrino masses, which includes a do ... More Presented by Dr. Jaime HERNÁNDEZ SÁNCHEZ on 11 Oct 2008 at 17:15 Presented by Carmine PAGLIARONE Session: Cosmology We construct an expression for the entropy of a dark matter halo modelled by a Navarro-Frenk-White profile with a core. By comparing this entropy with the entropy at dark-matter freeze-out, we obtain constraints on the allowed parameter space for mSUGRA models. Additionally, by imposing consistency with the current dark matter bounds, we severely reduce the allowed region for low tan-beta and deri ... More Presented by Dr. Lukas NELLEN on 11 Oct 2008 at 18:30 Considerable work has been done on the one-loop effective action in combined electromagnetic and gravitational fields, particularly as a tool for determining the properties of light propagation in curved space. After a short review of previous work, I will present some recent results obtained using the worldline formalism. In particular, I will discuss various ways of generalizing the QED Euler-He ... More Presented by Christian SCHUBERT on 10 Oct 2008 at 18:30 Session: RHI We present a dynamical quark recombination model to study the hadron yield through the hadron-quark matter transition. The model is based on a variational approach to the many-body system and a truly many-body potential. Using the single variational parameter of the model as a probability we are able to explain, in a Bjorken scenario that incorporates the proper time evolution of the system, the p ... More Presented by Dr. Genaro TOLEDO SANCHEZ on 7 Oct 2008 at 16:00 Session: RHI In the study of heavy ion reactions, there are many methods to look at the created matter in the collisions. Jets have been of interest for many years, however, on this front, the techniques developed up to date for the analysis are not enough to understand a large body of signals, due to an unclear definition of jets. In this talk we present the details of the leading particles and the remaining ... More Presented by Dr. Eleazar CUAUTLE on 10 Oct 2008 at 18:30 Session: Review Talks A new particle accelerator, the Large Hadron Collider (LHC), is now beginning its operation at CERN in Geneva. Particle physicists expect that this accelerator will open to view the next set of interactions beyond the familiar strong, weak, and electromagnetic forces. In this lecture, I will introduce the LHC physics program for proton-proton collisions. I will review experimental results in parti ... More Presented by Dr. Michael PESKIN on 6 Oct 2008 at 09:00 Session: Review Talks The Large Hadron Collider (LHC) at the European Center for Particle Physics (CERN) in Geneva, Switzerland, is presently commissioned for its first its first proton-proton collisions expected in fall of 2008. The design collision energy is 14 TeV at the center of mass, with a luminosity of 10^34 cm^-2 s^-1, making this machine the highest energy man-made particle accelerator with the highest colli ... More Presented by Dr. Peter LOCH on 6 Oct 2008 at 10:00 Session: Posters Presented by Mr. Sinuhe PEREZ-PAYAN on 9 Oct 2008 at 19:00 Session: Cosmology Session: Review Talks Presented by Prof. Andrea SANTANGELO Session: Cosmology The top quark decays are of particular interest as a means to test the standard model (SM) predictions. These include the dominant t -> bW, the Cabibbo-Kobayashi-Maskawa (CKM)-suppressed process t -> cWW, and the rare decays t -> cZ and t -> c gamma. They are highly suppressed and they become an excellent window to probe the predictions of theories beyond the SM. In this work we evaluate the effec ... More Presented by Dr. Ricardo GAITAN on 11 Oct 2008 at 17:00 Session: Posters Presented by Esteban Alejandro Reyes PEREZ MONTANEZ on 9 Oct 2008 at 19:00 Session: Beyond SM We present a simple construction in which metastable vacua occur classically and in which supersymmetry-breaking is sourced by both D-terms and F-terms. All the relevant dynamics in the scenario described here is perturbative, hence calculations of vacuum energies and lifetimes can be performed explicitly. (In most other metastable SUSY-breaking models, these quantities are obscured by nonperturba ... More Presented by Brooks THOMAS on 11 Oct 2008 at 12:45 Session: Beyond SM We propose a model based on$SU(5) \times { }^{(d)}T$which successfully gives rise to near tri-bimaximal leptonic mixing as well as realistic CKM matrix elements for the quarks. The Georgi-Jarlskog relations for three generations are also obtained. There are only nine operators allowed in the Yukawa sector up to at least mass dimension seven due to an additional$Z_{12} \times Z'_{12}\$ symmetry, ... More
Presented by Mu-Chun CHEN on 11 Oct 2008 at 18:30
Session: Cosmology
We review the conditions for a single field to be responsible for inflation and dark matter in the Universe, and the observational constraints that should be accomplished for that purpose. As an example, we take a minimally coupled scalar field endowed with a quadratic potential; we shall show that this model seems to require a second period of inflation in order to satisfy the observational const ... More
Presented by Dr. Ureña LUIS on 7 Oct 2008 at 19:30
Session: Posters
Presented by Felix Francisco GONZALEZ CANALES on 9 Oct 2008 at 19:00
Session: RHI
I will discuss how the experiments at RHIC have made extensive use of identified particles in determining that the hot and dense medium produced is consistent with a state of liberated quarks and gluons prior to hadronization. Further, we have used these identified hadrons to study how this medium interacts with differently flavoured partons.
Presented by Dr. Helen CAINES on 8 Oct 2008 at 19:20
Session: RHI
The anomalies observed at RHIC for the baryon - meson ratios have prompted a number of theoretical works on the nature of the hadrochemistry in the hadronisation stage of the pp collisions and in the evolution of the dense system formed in heavy ion collisions. Although the predictions differ in the theoretical approach, generally a substantial increase in the baryon production is predicted in the ... More
Presented by Dr. Edmundo GARCIA on 9 Oct 2008 at 16:00