Event calendar file
4-12 November 2010
Morelia, Michoacan
Mexico/General timezone
- arteaga@ifm.umich.mx
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99
An immediate non-comprehensive and fast reading three hours immersion in supersymmetry. Get yourself prepared for the LHC.
Presented by Dr. Liliana VELASCO SEVILLA
on
4 Nov 2010
at
09:00
We will present a brief review of some aspects of noncommutative theories ranging from the UV/IR mixing in noncommutatives field theories, the Seiberg-Witten map and noncommutative gravity up to emergent gravity.
Presented by Prof. Victor RIVELLES
on
9 Nov 2010
at
12:30
In this contribution, the all-particle energy spectrum from 10^16 to 10^18 eV, as reconstructed from the KASCADE-Grande data, is presented. As it will be shown, in this interval the cosmic ray spectrum does not follow a simple power-law behavior due to the presence of two unexpected and significative features in the flux. Along with these results, a brief description of the experiment and the ana
... More
Presented by Dr. Juan Carlos ARTEAGA VELAZQUEZ
on
10 Nov 2010
at
18:00
Presented by Prof. Poul DAMGAARD
on
8 Nov 2010
at
16:00
En este trabajo estamos analizaremos la producci\'{o}n de
bosones de Higgs cargados en dispersiones muy inel\'asticas $e^{-}p$,
en el contexto del 2HDM-III a energ\'{i}as del LEP/LHC. Para esto, utilizaremos
el modelo de partones y haremos uso de la aproximaci\'on de
Weizsäcker-Williams. Además, compararemos nuestros resultados
con aquellos que se obtienen al hacer el c\'alculo sin la apro
... More
Presented by Luis Salvador MIRANDA PALACIOS
on
12 Nov 2010
at
10:00
Tatyana II satellite is the second from University Satellite Program, which was initiated by the Moscow State University with the participation of the Benemerita Universidad Autonoma de Puebla. This satellite has a mixed detector ultraviolet and infrared radiation and a detector of charged particles.
In this project we analyze the data collected by the satellite over a period corresponding to 3
... More
Presented by Ms. Liliana RIVERA
on
12 Nov 2010
at
10:00
Dynamical chiral symmetry breaking and confinement are two crucial features of
Quantum Chromodynamics. We study the confinement of the gluon propagator in
momentum space, where the dressed-gluon propagator, $D\{\mu,\nu} (p-q)$, is
width by an analytical dressing function given by
$G(q^2)/q^2 = c Sinc^2(\kappa q/2)$.
We will address these topics from the perspective of QCD’s Dyson-Schwinger
... More
Presented by Dr. Cliffor Benjamín COMPEÁN JASSO
on
12 Nov 2010
at
10:00
In this general talk, I will discuss some recent aspects of the duality between gauge theories and Strings.
I will focus most of the presentation in advances related to cases with minimal or no-Supersymmetry.
The talk is targeted at a general public of particle physicists, making emphasis on some recent qualitative progress.
Presented by Prof. Carlos NUNEZ
on
8 Nov 2010
at
12:30
Type: Oral contribution
Session:
Session II LHC.SM.BSM
Track: LHC physics: Standard Model and Beyond
The quark-parton model is still at the basis of most of our attempts
to describe hadronic phenomena. The production of
hadrons has been studied from phenomenological and experimental point
of view. Experimentally, baryons and mesons production mechanism has
been reported from e+e- collision, finding some controversial results
among the experiments. In this talk we present the techni
... More
Presented by Dr. Eleazar CUAUTLE
on
11 Nov 2010
at
16:00
We obtain limits on the anomalous coupling $HZ\gamma$ through data
published by the L3 Collaboration on the process $e^+e^-\to
\tau^+\tau^- \gamma$. Our analysis leads to bounds on this
coupling of order $10^{-2}$, for an intermediate mass Higgs boson
$115 < M_H < 145$ $GeV$, two orders of magnitude above the
Standard Model prediction.
Presented by Dr. Alejandro GUTIERREZ-RODRIGUEZ
on
12 Nov 2010
at
10:00
The Higgs mediated flavor violating bottom-strange quarks transitions induced at the one-loop level by a nondiagonal $Hbs$ coupling are studied within the context of an effective Yukawa sector that comprises $SU_L(2)\times U_Y(1)$-invariant operators of up to dimension-six. The most recent experimental result on $B\to X_s\gamma$ with hard photons is employed to constraint the $Hbs$ vertex, which i
... More
Presented by Dr. Fernando RAMÍREZ ZAVALETA
on
12 Nov 2010
at
10:00
In the present work we bound the $Z^\prime tc$ coupling using the current experimental results for the $D^{0}-\overline{D^{0}}$ meson mixing system. We found that the strength associated to this coupling is less than $5.75\times 10^{-2}$. We also study the single top production for the $e^+e^-\to Z^\prime\to tc$ process at the $Z^\prime$ boson resonance and found that the number of events expected
... More
Presented by Dr. Jorge Isidro ARANDA SÁNCHEZ
on
12 Nov 2010
at
10:00
We assume that the similarity of charged leptons and quarks mass hierarchies allow us to represent all mass matrices of Dirac fermions in terms of a universal form with four texture zeros. And using the seesaw mechanism type-I, we discuss the conditions that the components of the Dirac and right-handed Majorana neutrino mass matrices must satisfy for the left-handed Majorana neutrino mass matrix t
... More
Presented by Mr. Felix GONZALEZ CANALES
on
8 Nov 2010
at
17:00
We discuss the implications of assuming a four-zero Yukawa texture for the properties of the charged Higgs boson within the context of the general 2-Higgs Doublet Model of Type III. We begin by presenting a detailed analysis of the charged Higgs boson couplings with heavy quarks and the resulting pattern for its decays, including the decay $H^+ \to W^+ \gamma$ at 1-loop level. The parameters chose
... More
Presented by Dr. Jaime HERNANDEZ SANCHEZ
on
10 Nov 2010
at
19:30
Small vibrations of a mechanical system consisting of three particles connected
by springs and placed in each vertex of the equilateral triangle is appropiate
for illustrating the gauge symmetry breaking and the vacuum stability
conditions of a minimal $S_3$-invariant extended Higgs potential. In the $S(3)$
extended Standard Model, there are three $SU(2)$ Higgs doublets that belong
to
... More
Presented by Dr. Rodriguez-Jauregui EZEQUIEL
on
12 Nov 2010
at
10:00
We discuss some aspects of confinement in quantum electrodynamics in a plane including a Chern-Simons term by exploring the analytic structure of the fermion propagator derived from the corresponding Schwinger-Dyson equation.
Presented by Dr. Alfredo RAYA
on
12 Nov 2010
at
18:45
The possible existence of a hidden scale invariant sector interacting weakly with the SM fields has been suggested recently by Georgi. Although the study of such a sector involves a very complex mathematical framework, it turns out that its phenomenology can be studied through a low energy effective field theory parametrized by effective operators constructed out of the SM fields and nonphysical
... More
Presented by Mr. Agustin MOYOTL-ACUAHUITL
on
12 Nov 2010
at
10:00
Presented by Prof. Ashok Das DAS
on
9 Nov 2010
at
09:00
Quantum Chromodynamics (QCD) is the currently accepted renormalizable quantum field theory that describes the strong interactions among quarks and gluons. The two fundamental parameters of QCD are the running coupling and the quark masses. Because of quark & gluon confinement these parameters cannot be measured in the same fashion as in non-confined theories like e.g. in Quantum Electrodynamics. A
... More
Presented by Prof. CESAREO DOMINGUEZ
on
11 Nov 2010
at
09:00
Type: Oral contribution
Session:
Session I I.E.PP
Track: Instrumentation and experimental particle physics
La colposcopía y la prueba de Papanicolau son estándares
mundiales (incluyendo a México) para la detección de
displasias genitales en la mujer y cáncer cervical. Los altos
costos de las tecnologías para la detección y tipificación de
VPH resulta en una falta generalizada de atención médica
oportuna. Las técnicas de amplificación de ácidos nucleicos
nos brindan informació
... More
Presented by Dr. Luis Manuel MONTANO ZETINA
on
12 Nov 2010
at
19:00
We describe a general purpose data acquisition system for PMT signals. Hardware-wise it consists of a 4-channel ADC daughter board, an FPGA motherboard, a GPS receiver and an atmospheric pressure sensor. The four ADC channels simultaneously sample PMT input signals with a sampling rate of 100MS/s. We have evaluated the noise of our system obtaining less than -48.6dB. This DAQ system includes a
... More
Presented by Mr. Jose Ruben CONDE
on
12 Nov 2010
at
10:00
Diffractive and photon induced physics is a research area
with a remarkable discovery potential at the LHC. ALICE has
started a program to exploit its unique capabilities to
study the subject in both proton proton and heavy ion collisions.
We discuss some aspects of a new subdetector for the ALICE
experiment at the LHC. This detector would enhance the performance
of ALICE to address some rel
... More
Presented by Prof. Gerardo HERRERA CORRAL
on
9 Nov 2010
at
10:00
Una tecnología portable, barata y además eficaz para la captura de eventos muy energéticos, tales como brotes de rayos gama, Forbushy particulas cósmicas incidiendo en la atmosfera terrestre, se puede conseguir mediante el uso de una tarjeta programable FPGA, la cual servirá como controlador de un conjunto de canales TDC's que serán los portadores de la señal de disparo del detector HAWC.
Presented by Mr. Velazquez Rdz ENRIQUE
on
12 Nov 2010
at
10:00
Type: Oral contribution
Session:
Session II LHC.SM.BSM
Track: LHC physics: Standard Model and Beyond
Adding a fourth generation to the Standard Model and assuming it to be valid up to some cutoff $\Lambda$, we show that Yukawa couplings for the fourth generation are strong enough to drive electroweak symmetry breaking. Proposing a Coleman-Weinberg mechanism of electroweak
symmetry breaking without self-interactions for the Higgs field at classical level, we show that the masses for the fourth
... More
Presented by Carlos VAQUERA
on
12 Nov 2010
at
18:00
We summarize our recent work on the application of the worldline
formalism to the calculation of the effective actions in Einstein-Maxwell
theory due to scalar and spinor loops. In the low energy limit and at
linear order in the curvature we obtain relatively compact two-parameter
integral representations for these effective actions. A particularly
simple Euler-Heisenberg type representation
... More
Presented by Mr. José Manuel DÁVILA DÁVILA
on
12 Nov 2010
at
10:00
Type: Oral contribution
Session:
Session I I.E.PP
Track: Instrumentation and experimental particle physics
Presented by Dr. Luis Manuel VILLASEÑOR CENDEJAS
on
12 Nov 2010
at
18:00
We explore in detail the Higgs phenomenology that results in a model where right-handed neutrinos have a mass scale of the order of the electroweak scale. In this model all scales arise from spontaneous symmetry breaking, and this is achieved with a Higgs sector that includes an extra Higgs singlet in addition to the standard model Higgs doublet. The scalar spectrum includes two neutral CP-even st
... More
Presented by Sebastián ROSADO NAVARRO
on
12 Nov 2010
at
10:00
We study the production of neutral Higgs boson pairs at $\gamma
\gamma$ colliders through the $\gamma \gamma \to \phi_i\phi_j$
reaction within the context of the two-Higgs doublet model type III. Exact
analytical expressions are presented. The use of a nonlinear
$R_\xi$-gauge, which considerably simplifies the loop calculations
and renders compact analytical expressions, is stressed. The
$\
... More
Presented by Dr. Carlos HONORATO
on
12 Nov 2010
at
10:00
We analyse the mixing and degeneracy of the isolated doublet of
neutral, heavy Higgs bosons, H_2 and H_3, of the Minimal
Supersymmetric Standard Model with CP-Violation. We find a set of
Lagrangian parameter values for which the isolated doublet of mass
eigenstates is degenerate. At degeneracy, the physical masses as
functions of the Lagrangian parameters have a rank one algebraic
branch poi
... More
Presented by Prof. Alfonso MONDRAGON BALLESTEROS
on
9 Nov 2010
at
17:15
Type: Oral contribution
Session:
Session II LHC.SM.BSM
Track: LHC physics: Standard Model and Beyond
In this talk we present an extension of the SM that contains
a neutral SU(2) gauge group. This model admits a possible neutral, but
complex, stable vector state, which can play the role of dark matter. The
Higgs sector of the model can also give interesting signatures at LHC.
Presented by Dr. Lorenzo DIAZ-CRUZ
All-loop Finite Unified Theories (FUTs) are N=1 supersymmetric Grand Unified Theories (GUTs) which have a remarkable predictive power due to the required reduction of couplings. Finiteness results from the fact that there exist RGI relations among dimensionless couplings that guarantee the vanishing of all beta-functions in certain N=1 GUTs even to all orders. Furthermore developments in the sof
... More
Presented by Dr. Myriam MONDRAGON
on
10 Nov 2010
at
18:15
The inclusion of the unstable features of a spin-1 particle, without breaking the electromagnetic gauge
invariance, can be properly accomplished by including higher order contributions. This
induces a nontrivial modification to the electromagnetic vertex of the particle, which must be considered
in addition to any other contribution computed as stable particles. Considering the modified electro
... More
Presented by Dr. Genaro TOLEDO
on
11 Nov 2010
at
16:30
The LHC is set to achieve a total 14 TeV collision energy for every pair of protons colliding. At this energy it will be possible to study interactions of the SM particles that may contain particles beyond it. We therefore will continue improving our understanding of particle physics, at the very least. Ideally many particles would be discovered and its interactions would be studied. A framework
... More
Presented by Dr. Liliana VELASCO SEVILLA
on
11 Nov 2010
at
11:30
We will present and study an algebra describing a mixed paraparticle model, known in the bibliography as ``The Relative Parabose Set algebra (\textsc{Rpbs})''. Focusing in the special case of a single parabosonic and a single parafermionic degree of freedom $P_{BF}^{(1,1)}$, we will construct a class of Fock-like representations of this algebra, dependent on a positive parameter $p$ a kind of \emp
... More
Presented by Dr. Konstantinos KANAKOGLOU
on
12 Nov 2010
at
10:00
"Forward and Diffractive Physics in LHC is a new open window to understand this type of strong interactions. We will present a didactic description of the topics being developed at CMS. As we know there is no results to present as something new. We are accumulating data to have soon new results. We will show the number of topics and the detectors properties to do the observation of several topolog
... More
Presented by Prof. Alberto SANTORO
on
9 Nov 2010
at
16:00
The successful Standard Model of particle physics requires a
consistent high energy completion that can be found in the
framework of supersymmetric grand unification and string theory. We discuss specific properties of such a scheme, concentrating on the concept of local grand unification, the appearance of discrete symmetries and supersymmetry breakdown via mirage mediation.
Presented by Dr. Hans peter NILLES
on
11 Nov 2010
at
12:30
Over the last years, valuable insight into the deep infrared region of SU(N) Yang-Mills theory in the Coulomb gauge has been obtained with the help of functional methods. I describe how a Gaussian ansatz for the vacuum wave functional leads, via the variational principle, to equations of the Dyson-Schwinger type for the equal-time gluon and ghost propagators. I will present the numerical and analy
... More
Presented by Prof. Axel WEBER
on
9 Nov 2010
at
16:00
Gamma-Ray Bursts (GRBs) are the most powerful explosion in the universe. They are possible candidates of the sources of Ultra-high energy cosmic rays (UHECRs) and very high-energy neutrinos/gamma-rays. I would like to review the explosion mechanism of GRBs and how UHECRs can be produced in GRBs. I would like to present our recent study on the central engine of GRBs with some movies of numerical si
... More
Presented by Prof. Shigehiro NAGATAKI
on
9 Nov 2010
at
17:00
Type: Oral contribution
Session:
Session II LHC.SM.BSM
Track: LHC physics: Standard Model and Beyond
We discuss the gauge structure of the 4d effective theory arising from a pure 5d Yang-Mills theory compactified on the orbifold $S^1/Z_2$, reexamined on the basis of the BRST symmetry. If the gauge parameters propagate in the bulk, the excited Kaluza-Klein (KK) modes are gauge fields and the 4D theory is gauge invariant only if the compactification is carried out by using curvatures as fundamental
... More
Presented by Mr. Héctor NOVALES-SÁNCHEZ
on
12 Nov 2010
at
18:30
We work with gauge systems and using gauge invariant functions we study its quantum counterpart and we find if all these operators are hermitian or non hermitian. Our study is divided in two cases, when we choose clock or clocks that its Poisson bracket with the set of constraints is one or different to one. We show some transition amplitudes.
Presented by Dr. Vladimir CUESTA SÁNCHEZ, Dr. José David VERGARA OLIVER
on
12 Nov 2010
at
10:00
Type: Oral contribution
Session:
Session II LHC.SM.BSM
Track: LHC physics: Standard Model and Beyond
We analyze a generalization of the SUSY IIHD Model in which
all possible 6 dimension operators, in the Superpotential, the Kahler
Potential and the Gauge Sector, are included. Within this setup, we
study the contributions due to these extra operators to Higgs mass
spectrum, masses and mixings of Neutralinos and Charginos, and finally
estimate the relic abundance for dark matter searches.
Presented by Roger José HERNÁNDEZ PINTO
on
11 Nov 2010
at
16:30
We consider a five-dimensional thick braneworld with a warped four-dimensional Poincaré invariant space-time in the framework of scalar matter non-minimally coupled to gravity plus a Gauss-Bonnet term in the bulk. Scalar field and higher curvature corrections to the background equations as well as the perturbed equations are shown. A relationship between 4-dimensional and 5-dimensional Planck ma
... More
Presented by Mr. Malagon DAGOBERTO
on
12 Nov 2010
at
10:00
In this talk we show that there exist a relationship between high order derivative theories and systems with noncommutativity. To establish this relation we use as an example a mechanical model of the Chern-Simons type with second order temporal derivatives. Intrinsically this model presents noncommutativity in the velocities. However, at the quantum level we obtain states with negative norm. To
... More
Presented by Prof. Jose david VERGARA
on
10 Nov 2010
at
18:30
I will discuss general features of a holographic superconductor and explain the role of the spin of its order parameter. I will then explain how to construct d-wave (spin 2) holographic superconductors and go over some of their features, comparing holographic results to data from photoemission experiments.
Presented by Dr. Amos YAROM
on
8 Nov 2010
at
16:45
The inert doublet model is an extension of the Standard Model of Elementary Particles that is defined by the only addition of a second higgs doublet without couplings to quarks or leptons. This minimal framework has been studied for many reasons. In particular, it has been proved that the new degrees of freedom contained in this new doublet can account for the dark matter of the Universe.
Presented by Ms. Lilian PRADO
on
12 Nov 2010
at
10:00
Type: Oral contribution
Session:
Session II LHC.SM.BSM
Track: LHC physics: Standard Model and Beyond
Modifications of the structure of jets produced in ion-ion
collisions represent a very sensitive tool to study the interactions
of partons with the medium. Partonic energy loss manifests itself as
a decrease of the number of particles carrying a high fraction of the
jet energy and, the additional radiated energy, increases the number
of low-energy particles.
We present and analysis of j
... More
Presented by Ms. Isabel DOMÍNGUEZ JIMÉNEZ
on
11 Nov 2010
at
17:00
In MINERvA Experiment (FNAL e938), we study Λ° polarization in ν_μ N→ Λ°μ-X produced at low energies .
We present in this work the methodology to sudy Λ° polarization and some very preliminary results.
Presented by María Cristina ZARAZUA
on
12 Nov 2010
at
10:00
The flux of cosmic rays above 10^18 eV has been measured with unprecedented precision using the Pierre Auger Observatory. We describe the present status of the Auger Observatory and discuss the latest results obtained by the Auger Observatory with emphasis on the update of the correlation of the arrival directions of the most energetic cosmic rays with nearby active galactic nuclei, the measurem
... More
Presented by Dr. Luis VILLASENOR
on
10 Nov 2010
at
19:00
I will give an overview of the correspondence between semiclassical gauge theories quantized on the light-front and a dual gravity model in anti-de Sitter (AdS) space. This correspondence -- light-front holography -- provides an initial approximation to QCD in its strongly coupling regime and leads to a light-front Hamiltonian and relativistic bound-state wave equations in terms of an invariant im
... More
Presented by Dr. Guy F. DE TERAMOND
on
11 Nov 2010
at
10:00
Type: Invited talk
Session:
Session I I.E.PP
Track: Instrumentation and experimental particle physics
A detailed description of the MINERvA detector is presented as well as a v data set analysis for the full detector. The detector working energy range, its performance characteristics, and current analysis efforts are shown.
The Test Beam facility and its role for calibration purposes is also discussed.
Presented by Gerardo ZAVALA-GUZMAN
on
11 Nov 2010
at
16:00
on
9 Nov 2010
at
16:30
Oscillations between active and sterile neutrinos remain as an open possibility to explain some anomalous experimental observations. In a four-neutrino (three active plus one sterile) mixing scheme, we use the Magnus expansion of the evolution operator to study the evolution of neutrino flavor amplitudes within the Earth. We apply this formalism to calculate the transition probabilities from activ
... More
Presented by Dr. Mario Andres ACERO ORTEGA
on
9 Nov 2010
at
16:00
We present results from the analysis of exclusive data from the process pp-->pf(Ks^0K^±π^Ŧ)ps at 800 GeV/c, obtained by the Fermilab experiment E690. After kinematic and analysis cuts are applied, two peaks are dominant
in the resonance regions of the f1(1285) and the f1(1420) mesons, the latest being a good candidate for non-qq meson. The results are presented after a fit with two Breit-Wi
... More
Presented by Mr. Felipe PÉREZ VARGAS
on
11 Nov 2010
at
17:00
on
12 Nov 2010
at
10:00
on
9 Nov 2010
at
18:00
We shall study Delta L=2 processes taking place in the neutrino
oscillations. These delta L=2 effects can be induced by Majorana
naturalness of neutrinos or by new physics at production or detection. We
show a general framework where it is possible to use last MINOS results to
get bounds on these new physics effects.
Presented by Vannia GONZÁLEZ
on
9 Nov 2010
at
18:30
We study the problem of moduli stabilization in explicit heterotic orbifold compactifications with the exact spectrum of the MSSM. Considering all perturbative and nonperturbative contributions to the effective action of the compactification, we show that all bulk moduli directions are lifted. Our analysis reveals that several properties of concrete models are missed when only "generic" features a
... More
Presented by Dr. Saul RAMOS-SANCHEZ
on
9 Nov 2010
at
18:45
Presented by Prof. Mauro NAPSUCIALE
on
9 Nov 2010
at
18:45
En este trabajo estamos interesados en la producci\'on de bosones de Higgs cargados en
dispersiones muy inel\'asticas $e^− p$, en el contexto del modelo de dos dobletes de Higgs
tipo III (2HDM-III) a energ ́\'{'i}as de LEP/LHC. Para ello, primero calcularemos la secci\'oń
eficaz del subproceso $e^− + q → l + H^{\pm} + q$ , posteriormente haciendo uso del modelo de
partone
... More
Presented by Ms. Olga Guadalupe FÉLIX BELTRÁN, Saul SÁNCHEZ MORALES
on
12 Nov 2010
at
10:00
In this work we propose a geometrical distribution of the air Cherenkov detectors array, which will be part of the Cosmic High Altitude Radiation Monitor Observatory (CHARM) located at Pico de Orizaba volcano at 4300 m.a.s.l. The proposal is based on a library of montecarlo simulations with energies from 10^14 eV to 10^17 eV and photons, protons and iron nuclei as primary particles. The goal of t
... More
Presented by Ms. Alma Roberta MORALES REYES
on
12 Nov 2010
at
10:00
Recent interest in developing an accelerator-based light source in Mexico has driven several actions by the Division of Particles and Fields in Mexico, and by the electron accelerator community in the United States. We report on actions taken over the last two years and on recent developments that are very encouraging and offer a variety of possibilities to start the development of an accelerator
... More
Presented by Dr. Carlos HERNANDEZ-GARCIA
on
8 Nov 2010
at
11:30
Presented by Dr. Ashok DAS
on
5 Nov 2010
at
16:00
The delta-regime of QCD is characterized by light quarks
in a small spatial box, but a large extent in the temporal
direction. In this setting a specific variant of chiral
perturbation theory (the delta expansion) applies, based
on a quantum mechanical treatment of the quasi-one-dimensional
system. In particular, for vanishing quark masses we obtain
a residual pion mass, which has been comp
... More
Presented by Dr. Wolfgang BIETENHOLZ
on
8 Nov 2010
at
16:30
The method of QCD sum rules at finite temperature is based on the operator product expansion of current correlators at short distances, and on the concept of quark/gluon-hadron duality. After an introduction to this method, its extension to finite temperature will be discussed, together with several applications. These will include chiral symmetry restoration, and quark-gluon deconfinement, with e
... More
Presented by Prof. CESAREO DOMINGUEZ
on
9 Nov 2010
at
16:45
We review how second order equations for fields arise just by using projectors over Poincar ́e invariant subspaces. We focus in the case of fields describing massive spin 1/2
particles, we propose a particular second order Lagrangian and present preliminary results in its quantization.
Presented by Mr. René ANGELES MARTÍNEZ
on
12 Nov 2010
at
10:00
n this work we computed the quark mass matrix and the quark mixing matrix of the
$S_3$ invariant extension of the Standard Model. In the $S_3$ invariant minimal standard model it is assumed that the quark, leptons and Higgs fields belong to the three-dimensional reducible representation of the permutation group $S_3$. We performed a perturbative diagonalization of the quark mass matrix and co
... More
Presented by Mr. Javier MONTAÑO-PERAZA
on
12 Nov 2010
at
10:00
Presented by Prof. Poul DAMGAARD
The discovery of neutrino oscillations has been a major
achievement in the fields of nuclear and particle physics. The
next round of neutrino oscillation experiments will search for
CP and CPT violation in the lepton sector, which is especially
important because such a violation could possibly help explain the
baryon asymmetry of the universe. Current and future neutrino
oscillation exper
... More
Presented by Dr. William LOUIS
on
9 Nov 2010
at
11:30
on
9 Nov 2010
at
17:00
I will present a new development in the case of minimally SUSY AdS/CFT-like dualities, that uses some interesting geometrical tools.
Presented by Prof. Carlos NUNEZ
on
9 Nov 2010
at
18:00
We describe some recent results on the connection between higher-spin gauge field theories and supersymmetric spinning particle models. We point out the special role that maximally-symmetric target spaces appear to have in SO(N) models and present a derivation of the higher-spin curvatures.
Presented by Dr. Olindo CORRADINI
on
9 Nov 2010
at
16:30
on
8 Nov 2010
at
16:00
The measurement of the event shape variables has been well-established in e+e- annihilation experiments. These has been used to extract the signal from the continuum background in different decays. Also the reported strangeness production (K and /\) present a deficit of strange particles on event with dijets.
We present a preliminary analysis of hadrons with V⁰ decay topology. We characterize a
... More
Presented by Mrs. Ivonne MALDONADO-CERVANTES
on
12 Nov 2010
at
10:00
Presented by Oscar LOAIZA-BRITO
on
4 Nov 2010
at
11:30
Type: Oral contribution
Session:
Session I I.E.PP
Track: Instrumentation and experimental particle physics
We present the results of the studies of UV atmospheric flashes as a source of background in the detection of Ultra High Cosmic Rays from space. The data were obtained by using a UV detector in the Tatyana satellites I and II. Plans for near future in the new Satellite Lomonosov are presented.
Presented by Dr. Humberto SALAZAR
on
11 Nov 2010
at
16:30
We performed a study of solar activity through the Forbush effect, which relates large-scale solar dynamics with the detection of secondary cosmic rays at ground level. The detection of secondary cosmic rays is done by using a cylindrical water Cherenkov detector. The Cherenkov light produced by charged particles from the secondary cosmic radiation is detected by a single photomultiplier located
... More
Presented by Ms. Angelica BAHENA BLAS, Dr. Luis Manuel VILLASEÑOR CENDEJAS
on
12 Nov 2010
at
10:00
In this work we discuss the minimum fluence that gamma ray busts (GRBs) in the 1 GeV to 1 TeV energy range must have in order to be detected by the VAMOS array of the HAWC Observatory, under construction at the Sierra La Negra site in Mexico (4100 m a.s.l.), with a 5 sigma significance assuming a flux dN/dE ∝ E^-α and an spectral index of -2.7. It is well known that the number of secon
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Presented by Mario CASTILLO
on
12 Nov 2010
at
10:00
Knowing the exact energy of the second knee and which is the dominant composition is important for the astrophysics of high energies in the range of 10 ^ 17.5 eV to 10 ^ 19 eV, because the transition galactic to extragalactic components of cosmic rays flow could be happening in this range; that is why this work focuses on the analysis of data from the Pierre Auger Observatory extensions: Infill an
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Presented by Mr. Enrique VARELA C.
on
12 Nov 2010
at
10:00
Type: Oral contribution
Session:
Session I I.E.PP
Track: Instrumentation and experimental particle physics
This work es centered en the study of the magnetic spectrometer used in the MINERvA Experiment (E-938 at FERMILAB), this analysis it is done from the first beginning by means of the simulation of the magnetic field in 3D view and the simulation of the pass of the charged particles across of the magnetic field generated by the two identical dipole magnets. Also the comparison appears between of an
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Presented by Mr. Edgar VALENCIA RODRÍGUEZ
on
11 Nov 2010
at
17:00
We present a study for a Supersymmetric field theory with Lorentz-Violation terms in 5D. We
perform the analysis in the context of the Berger-Kostelecky model (BK), adding one compactified
dimension. This compactified dimension breaks explicitly the Lorentz invariance, however we intro-
duce terms that code this breaking as in Berger-Kostelecky work, and find non trivial restrictions
over boun
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Presented by Mr. Jose Didino GARCIA
on
12 Nov 2010
at
10:00
Type: Oral contribution
Session:
Session I I.E.PP
Track: Instrumentation and experimental particle physics
Presented by Dr. Ildefonso LEON MONZON
on
12 Nov 2010
at
18:30
The entire light flavor baryon spectra in the excitation regions below the bumps and the high lying excitations of the non-strange mesons reveal well marked
degeneracy patterns between opposite parity states. This degeneracy phenomenon
is quantitatively understood as a signature for the realiziation
of conformal symmetry in the infrared in accord with AdS/CFT.
Presented by Dr. Mariana KIRCHBACH
on
9 Nov 2010
at
18:00
In the framework of the Little Higgs Model (LHM), we calculate the
decay width $\Gamma(Z_1 \to e^+e^-)$ with corrections of QED and
QCD. We analyze this with recent data from LEP and compute the
contribution of the model. We find that the deviations of the
decay width of reaction $Z_1 \to e^+e^-$ from its SM value are
relatively large in the parameter space preferred by the
electroweak preci
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Presented by Dr. Alejandro GUTIERREZ-RODRIGUEZ
on
12 Nov 2010
at
10:00
We are currently interested in models for neutrino masses with the addition of a fourth chiral generation in the Standard Model. We present here a review of why we consider it an interesting subject and some of the proposals already existing.
Presented by Ms. Carolina LUJAN PESCHARD
on
12 Nov 2010
at
10:00
The low-temperature behavior of ferromagnets with a spontaneously broken symmetry O(3) -> O(2) is analyzed within the perspective of effective Lagrangians. The leading coefficients of the low-temperature expansion for the partition function and the spontaneous magnetization are calculated up to three loops and the results are compared with the condensed matter literature. The model-independent and
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Presented by Prof. Christoph HOFMANN
on
12 Nov 2010
at
18:00
on
11 Nov 2010
at
16:00
T2K is a long-baseline neutrino oscillation experiment with the primary
aim of measuring the smallest and most elusive neutrino mixing angle,
theta_13. 2010 saw the beginning of the T2K data-taking phase. This
presentation will give an overview of the T2K experiment, its goals and
current status, and will show some of the initial data.
Presented by Dr. Laura KORMOS
on
8 Nov 2010
at
16:30
It is a challenge to describe the non-Fermi liquid behavior that appears in strongly interacting systems of fermions using traditional field theory techniques. A proposal to model the associated "strange metal" phenomenology is to use a strongly coupled critical point with non-relativistic scale invariance, dual to a Lifshitz geometry, coupled to a finite density of probe charged carriers dual to
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Presented by Dr. Carlos HOYOS BADAJOZ
on
8 Nov 2010
at
16:00
We analized the double production and the triple self-coupling of
the standard model Higgs boson at future $\gamma \gamma$ collider
energies, with the reactions $\gamma\gamma \rightarrow f \bar f
HH$ $(f=b, t)$. We evaluated the total cross section for $f\bar
fHH$ and calculated the total number of events considering the
complete set of Feynman diagrams at tree-level. We varied the
triple co
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Presented by Dr. Alejandro GUTIERREZ-RODRIGUEZ
on
12 Nov 2010
at
10:00
The sources of Ultra-high energy cosmic rays (UHECRs) whose energy can be as large as 10^20 eV are still not confirmed, which is one of the most mysterious problems in Astrphysics today. I would summarize the history of searching for the sources of UHECRs and current status of their observations. I would like to show our theoretical study on the sources of UHECRs with a help of numerical simulatio
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Presented by Prof. Shigehiro NAGATAKI
on
10 Nov 2010
at
09:00
Current neutrino oscillation data strongly suggest that, in the lepton flavor
basis, there exist a mu-tau exchange invariance on neutrino mass matrix. Such a
symmetry gives a simple explanation of the observable values of atmospheric
mixing angle, which seems maximal, and the smallness (null value) of theta_{13}
angle in the PMNS mixing matrix. The most general breaking of mu-tau symmetry
is
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Presented by Dr. Abdel PEREZ-LORENZANA
on
9 Nov 2010
at
19:00
on
10 Nov 2010
at
19:00
