Event calendar file
20-26 October 2011
León, Guanajuato
Mexico/General timezone
- workshopdpyc2011@fisica.ugto.mx
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76
We first discuss the non-relativistic Bethe-Salpeter equation and its
general solution for the boson fields.
Then we continue with the relativistic case of the equation and its solution
in the ladder approximation.
Finally we discuss a formulation of a possible analogue of the B-S equation
for
unstable states.
Presented by Mr. Felix MALDONADO VILLAMIZAR
on
25 Oct 2011
at
19:00
Type: Parallel Talk
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
We present a computational work for users who need's to perform simulations, with Aires and/or Corsika, using a web interface in order to get and realize Extensive Air Showers (EAS) Simulations on-line, keeping and tracking information related in a database.
Presented by Mr. Cederik León DE LEÓN ACUÑA
on
26 Oct 2011
at
19:00
In November 2009 the LHC at CERN started operation by colliding protons at 900 GeV in the center of mass. In March 2010 the accelerator reached its present maximum energy of 7 TeV for proton interactions. The first heavy ion run at 2.76 TeV/nucleon took place later, in November 2010. The PbPb accelerator run was very successful reaching a luminosity of approximately producing 30 million interac
... More
Presented by Dr. Gerardo HERRERA
on
21 Oct 2011
at
09:00
Type: Poster
Session:
Poster session + Brindis
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
A large number of cosmic events were recorded during 2009 and 2010 for the calibration, alignment and commissioning of most of the ALICE (A Large Ion Collider Experiment at the CERN LHC) detectors. New cosmic data are continuously taken in 2011 during the periods in which the LHC accelerator does not produce any beam. Specific triggers, not used during the LHC collisions, were implemented to take
... More
Presented by Dr. Arturo FERNANDEZ TELLEZ, Mr. Ismael CORTES MALDONADO
We review the different approaches for the study of spin 3/2 fields. By using a super Higgs
mechanism we get mass for the spin 3/2 field and analyze the algebra of constraints in the formalism beyond the Rarita-Schwinger formalism (NKR).
Presented by Dr. Victor VILLANUEVA
on
22 Oct 2011
at
18:30
On september 30th, the Tevatron collider at Fermilab was turned off
for good, and with it
came to end the data taking of the DZero experiment. During a decade,
DZero collected
data that allowed the collaboration to perform hundreds of analysis,
but in particular,
to contribute to the better understanding of B hadrons and its
properties. In a decade of
data taking, B hadron proppert
... More
Presented by Dr. Eduard DE LA CRUZ BURELO
on
21 Oct 2011
at
17:00
Supersymmetric models predict the existence of light neutralinos with masses around 50 GeV as good candidates for detection of physics beyond the standard model, as well as other supersymmetric particles to different channels of decay of the Higgs bosons. In this work, we present the branching ratios of lightest Higgs boson to neutralinos and charginos in the context to MSSM. Then, it is determin
... More
Presented by Ms. María del Rocío APARICIO MÉNDEZ
A systematic low-energy effective field theory for hole-doped
antiferromagnets on the honeycomb lattice is constructed. The formalism
is then used to investigate spiral phases in the staggered magnetization
as well as the formation of two-hole bound states.
Presented by Dr. Christoph HOFMANN
on
25 Oct 2011
at
13:00
Baryon properties are computed at one-loop order in heavy baryon chiral perturbation theory in the large-N limit, where N is the number of colors. Loop graphs with octet and decuplet intermediate states cancel to various orders in N as a consequence of the large-N spin-flavor symmetry of QCD baryons. These cancellations are explicitly shown for the general case of N_f flavors of light quarks. In p
... More
Presented by Prof. Ruben FLORES
on
25 Oct 2011
at
12:30
A study of the strength of the lepton flavor-violating $Z^{\prime}\mu\tau$ coupling is presented. We used the experimental value of the muon magnetic dipole moment to bound this coupling, in a model-independent way, represented for the $\Omega_{\mu\tau}$ parameter and it is found that $\Omega_{\mu\tau}\sim 10^{-2}$ for a $Z^\prime$ boson mass of 1 TeV.
Presented by Dr. Fernando RAMÍREZ ZAVALETA
Type: Plenary Revision Talk (1 hr)
Session:
Revision
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
In this talk, we shall review the current status of string phenomenology, focusing on recent developments in string model building towards the MSSM and modern cosmology.
Presented by Dr. Saul RAMOS-SANCHEZ
on
20 Oct 2011
at
16:30
We study relevance of conformal symmetry breaking through
the dilaton mass on the high-lying spectra of the unflavored mesons.
The conformal symmetry is supposed to leave a footprint in those spectra
in consequence of the gauge-gravity duality conjecture in combination with
the opening of a conformal window in the infrared as recently observed
experimentally through the property of the r
... More
Presented by Dr. Mariana KIRCHBACH
on
21 Oct 2011
at
18:00
Type: Parallel Talk
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
In the present work a cuadratic potential of the form $V({\phi})=Vo+\frac{m}{2}\phi^{2}$ is reproduced by a compactification of the Type IIB string theory in a twisted torus in presence of either geometrical and non geometrical fluxes. In order to obtain an SUGRA effective action with N=1, D=4 further ingredients as orientifold planes are also implemented. Finally the inflation potential is c
... More
Presented by Cesar DAMIAN
on
24 Oct 2011
at
18:30
Type: Parallel Talk
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
Measuring the electron anti-neutrino component of the cosmic diffuse supernova neutrino background is the next ambitious goal for low-energy neutrino astronomy. We explore possible modifications to the detection rate of this flux due to a new non-standard coupling of neutrinos with a hypothetical scalar field dark matter candidate. We will show that this effect could give information about the pro
... More
Presented by Dr. Juan BARRANCO
on
20 Oct 2011
at
17:30
I will present a numerical solution of the coupled Dyson-Schwinger equations for the ghost and gluon propagators in Yang-Mills theory in Landau gauge. Aimed at investigating the infrared behaviour of the propagators, the equations are simplified by truncating the gluon loops, according to the ghost dominance hypothesis motivated by the Gribov-Zwanziger scenario.
I have solved the equations with
... More
Presented by Mr. Pietro DALL'OLIO
on
24 Oct 2011
at
18:00
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
Presented by Hugo GARCÍA COMPEÁN
on
24 Oct 2011
at
11:30
Type: Plenary Topical Talk (30 min)
Session:
Electroweak and Flavor Physics
Track: Electroweak and Flavor Physics
The experimental observation of lepton number violating (LNV) processes, where the total lepton number is violated by two units (\Delta L = 2), represents the most appropriate way to address the question of the nature of neutrinos as Majorana or Dirac particles. LNV processes mediated by the exchange of heavy Majorana neutrinos, such as three-body decays of tau lepton and charged pseudoscalar meso
... More
Presented by Mr. Néstor QUINTERO POVEDA
on
22 Oct 2011
at
13:00
We calculate the static electromagnetic moments of an elementary particle with spin, in particular the spin 3/2 case, and relate the result to Compton scattering in the forward direction. We start from a second order Lagrangian based on the properties of a particle viewed as a state transforming under some representation of the Poincaré group. Coupled to an electromagnetic field, this Lagrangian
... More
Presented by Dr. Ernesto Germán DELGADO-ACOSTA
on
21 Oct 2011
at
18:30
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
KASCADE-Grande is an air-shower observatory devoted to the detection
of cosmic rays with energies in the range of $10^{16}$ and $10^{18}$ eV.
This energy region is of particular interest for the cosmic ray astrophysics,
since it is the place where several models predict the existence of a galactic-
extragalactic transition in the cosmic ray spectrum and the presence of a
break
... More
Presented by Dr. Juan Carlos ARTEAGA VELAZQUEZ
on
24 Oct 2011
at
17:00
Understanding the observed masses and mixing angles of the known fermions has been an interesting challenge. Several ideas - some old some not so old - have been used in different settings in order to attempt an understanding with various degrees of success. In this talk we will briefly present some of the main ideas and venues explored so far starting with the more traditional (old) ones and then
... More
Presented by Dr. Alfredo ARANDA
on
22 Oct 2011
at
10:00
Type: Plenary Topical Talk (30 min)
Session:
Electroweak and Flavor Physics
Track: Electroweak and Flavor Physics
The versions of the Two Higgs Doublets Model (2HDM) suppress the Flavour Changing Neutral Currents (FCNC) through different mechanisms as; imposing symmetries on the Higgs doublets or explicitly introducing the
mass hierarchy in the entrances of the Yukawa matrices. Every possibility that nullify FCNC in
the context of the 2HDM generates a new version of this model, but the version that use text
... More
Presented by Dr. Lao Tse LÓPEZ
on
26 Oct 2011
at
10:30
The properties of the nuclear modification factor for heavy flavors
are usually attributed to the energy loss suffered by the heavy quark
propagating in a QCD plasma. Nevertheless it is a bit surprising that
the suppression of this factor is as strong as the one suffered by
light flavors. In this work we show that when accounting for the
momentum shift associated to the opening of the recombi
... More
Presented by Dr. Eleazar CUAUTLE, Eleazar CUAUTLE
on
21 Oct 2011
at
13:00
Flavor violating $tu_iH$ vertex induces top quark couplings $tc\gamma$
and $tu_i\gamma \gamma$ ($u_i=u,c$) at the one-loop level, in the effective Yukawa
sector through dimension six $SU_L(2)\times U_Y(1)$-invariant operators. The $t\to
cH$ and $t\to c\gamma \gamma$ decays can reach branching ratios about $5\times
10^{-3}$ and $10^{-4}$, respectively. As for $tc$ production, it is found that
... More
Presented by Dr. Jorge I ARANDA SÁNCHEZ
Type: Plenary Topical Talk (30 min)
Session:
Electroweak and Flavor Physics
Track: Electroweak and Flavor Physics
The most theoretically accepted mechanism for the EW symmetry breaking is the Higgs mechanism.
This mechanism has been partially proven through the well measured gauge boson masses. Nevertheless, there is one degree of freedom (in the Standard Model) that still have to
be measured experimentally: the Higgs particle, a scalar boson. Supersymmetric models predicts multiple Higgs particle as residu
... More
Presented by Dr. Melina GÓMEZ BOCK
on
26 Oct 2011
at
10:00
Type: Parallel Talk
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
Recent astronomical observations reveal that Active Galactic
Nuclei are sources of high-energy radiation. For example, the
Fermi-Lat and Hess telescopes have detected gamma-ray
emissions from the cores of Centaurus A and M87. Even more,
the Pierre Auger observatory has found a correlation of ultra-high
energy cosmic ray events with the position of AGN's, such as
Centaurus
... More
Presented by Dr. Juan Carlos ARTEAGA VELAZQUEZ
on
25 Oct 2011
at
18:00
We report an updated measurement of the CP-violating phase, $\phi_s^{J/\psi
\phi}$, and the decay-width difference for the two mass eigenstates, $\Delta
\Gamma_s$, from the flavor-tagged decay $B_s^0 \rightarrow J/\psi \phi$. The
data sample corresponds to an integrated luminosity of 8.0 fb$^{-1}$
accumulated with the D0 detector using $p \overline p$ collisions at $\sqrt{s}
= 1.96$ TeV produ
... More
Presented by Mr. Ricardo MAGAÑA VILLALBA
on
21 Oct 2011
at
18:30
The information gathered in the E318 Focus experiment provides a spin polarization
parameter measured for the p + K(short) channel. The measurement consists on fitting
the angular distribution of the generation of the kaon, in the frame of the Lambda C
propagation plane (with the original photon). The study involves the signal
enhancement and angular distribution for particles and antiparticle
... More
Presented by Mr. Jorge D MORALES
Type: Parallel Talk
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
We study the conditions an arbitrary flux compactification must fulfill in order to construct a 4d space-time of the type AdS2 x S2 from a type IIB supergravity flux compactification in which Neveu-Schwarz-Neveu-Schwarz (NS-NS) fluxes are included. We present a solution consisting on a compactification in the presence of 3-form NS-NS and Ramond-Ramond (RR) fluxes. The internal manifold is a SU(3)
... More
Presented by Liliana VAZQUEZ MERCADO
on
25 Oct 2011
at
19:00
There is an increasing evidence for a non zero neutrino mass coming
from an large number of neutrino experiments. Moreover, the new
generation of experimental setups promise to improve the current
measurements of the neutrino parameters and to address new problems
such as CP violation in the neutrino sector.
A strong effort to build models containing the neutrino mass pattern
observed in r
... More
Presented by Dr. Miranda OMAR
on
22 Oct 2011
at
16:30
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
We analyze the effects of phase space deformations in cosmology. The deformation is
introduced by modifying the symplectic structure of the theory. It is found that in
the deformed model the initial singularity is removed. Furthermore we find an
accelerating scale factor for the late time evolution. Finally a relationship
between the noncommutative parameter and the cosmological constant is es
... More
Presented by Dr. Miguel SABIDO
on
24 Oct 2011
at
12:30
I will briefly present a new derivation of the most general form of the Higgs potential in the framework of the Minimal S3-Invariant Extension of the Standard Model (MS3IESM). By introducing in the theory three Higgs fields that are SU(2) doublets and a permutational symmetry, S3, the concepts of flavours and generations are extended to the Higgs sector. In this work, we will try to clarify som
... More
Presented by Mr. Ulises Jesús SALDAÑA SALAZAR
on
25 Oct 2011
at
18:30
Type: Poster
Session:
Poster session + Brindis
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
In the framework of the two Higgs Doublet Model we graphically illustrate the energy dependence of the Higgs masses and the quartic couplings. Our results are based on the theoretical constraints on the quartic Higgs couplings through the stability and triviality principles that are obtained, using the Lagrange multipliers method and the numerical solutions of the Renormalization Group Equations,
... More
Presented by Mr. Damasio MORALES CRUZ
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Electroweak and Flavor Physics
We use the permutational symmetry group S(3) as a symmetry of flavour, which leads to a unified treatment of masses and mixings of the quarks and leptons. In this framework all mass matrices of the fermions in the theory have the same form with two texture zeros. Also, with the help of six elements of real matrix representation of S(3) as transformation matrices of similarity classes, we make a cl
... More
Presented by Mr. Felix GONZALEZ CANALES
on
20 Oct 2011
at
12:00
The two experimental facilities called B factories, one constructed at KEK, and another at SLAC, have played essential role in understanding CP asymmetry by providing experimental proof to the Kobayashi-Maskawa model. Also, more interestingly, both experiments noticed that some phenomena may not be understood in the framework of the theory. In other words, we may be seeing the first signals of ne
... More
Presented by Dr. Masa YAMAUCHI
on
22 Oct 2011
at
09:00
Type: Plenary Revision Talk (1 hr)
Session:
Revision
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
Many theoretical attempts at understanding the Planck-scale structure of spacetime can
accommodate minute departures from Lorentz and CPT invariance. At presently attainable
energies, such effects are expected to be accurately described within effective
field theory.
Such a field theory, in turn, can be employed to identify currently feasible
experimental
tests. This talk presents an ove
... More
Presented by Ralf LEHNERT
on
24 Oct 2011
at
09:00
The QCD interaction is flavour-blind. Neglecting electromagnetic and weak interactions, the only difference between flavours is caused by the different quark masses. We explain how flavour-blindness constrains hadron masses and matrix elements after flavour SU(3) is broken by the mass difference between the strange and light quarks. We use this knowledge to help us extrapolate 2+1 flavour lattice
... More
Presented by Dr. Paul RAKOW
on
21 Oct 2011
at
16:00
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
By introducing previous work we have done on QM, SUSY-QM, and related, in
this talk I shall speak about work we have done on standard cosmology,
with one scalar field, where typical QM problems may give a glimpse to
exact solutions in this field.
Presented by Dr. Marco A. REYES SANTOS
on
20 Oct 2011
at
16:00
The study of open heavy-flavours and quarkonia production in heavy-ion collisions is
expected to play an important role in understanding the properties of the Quark Gluon
Plasma. In this talk, a review of recent experimental results on this subject is given.
Particular attention is given to results that have been presented by the ALICE, ATLAS
and CMS collaborations, although some results by RH
... More
Presented by Dr. Daniel TAPIA TAKAKI
on
25 Oct 2011
at
10:00
Type: Plenary Topical Talk (30 min)
Session:
Electroweak and Flavor Physics
Track: Electroweak and Flavor Physics
Presented by Pagliarone CARMINE
on
25 Oct 2011
at
17:00
The study of the phenomenology of an extra neutral gauge boson, Z_H, can give hints of the details of the model from which it arises. We study the decay of such a particle into two neutral gauge bosons, Z_H-> V_i Z (V_i = γ,Z), in two popular versions of the little Higgs model: the littlest Higgs model (LHM) and the simplest little Higgs model (SLHM). These decays are induced at the one-loop leve
... More
Presented by Mr. Ismael CORTES MALDONADO
We study the one loop renormalization of the electromagnetic interactions
of a second order formalism for spin 1/2 fermions arising from projectors onto
invariant subspaces of the Poincaré group. Using dimensional regularization and
the mass-shell substraction scheme it is shown that the vacuum polarization,
fermion self energy and vertex interactions associated with the interacting
Lagrang
... More
Presented by Mr. Ángeles-Martínez RENÉ
on
22 Oct 2011
at
19:00
The LHCb is an experiment dedicated to $b$ and $c$ physics at the
LHC. In 2011 a total integrated luminosity of 600 pb-1 has been
already collected at a centre of mass energy of 7 TeV.
A concise review of the detector design and performance will be
presented, together with a selection of preliminary physics
results obtained with 300 pb-1 of 2011's data and the prospects for
some of the me
... More
Presented by Érica POLYCARPO
on
25 Oct 2011
at
11:30
We report on the basis of the so-called Unitary Chiral Perturbation Theory (UChPT) in terms of the N/D method. Several applications are reviewed with special emphasis on the mesonic scalar sector and its spectroscopy, the meson-baryon system and applications of ChPT in the nuclear medium. On going efforts on nucleon-nucleon interactions and covariant pion-nucleon scattering will be also reviewed.
... More
Presented by Dr. José Antonio OLLER
on
25 Oct 2011
at
09:00
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
I will present a gavity dual of the non-supersymmetric baryonic branch of
Klebanov-Strassler. We first find a non-SUSY solution of D5 branes wrapped
on an S^2 and using a chain of dualities we arrive at the softly broken
baryonic branch of KS. We show that the field theory dual has a gaugino mass
and gaugino condensate and exhibits a weak version of Seiberg duality.
Presented by Dr. Elena CÁCERES
on
24 Oct 2011
at
12:00
This work is an experimental search for two rare radiative decays of the Z boson, Z to J/Psi + gamma and Z to Upsilon + gamma. The search is done with CDF data and it is presented in this work up until the current state of the analysis.
Presented by Ms. Fernanda PSIHAS
on
21 Oct 2011
at
18:00
In 2010, the LHC started taking data from p-p collisions with a center-of-mass energy of 7 TeV and the ATLAS Experiment obtained its first W' and Z' exclusion limits with 42 pb-1 of integrated luminosity. In 2011, the LHC continues taking data at 7 TeV and the ATLAS Experiment recorded up to 1.21fb-1 of integrated luminosity this summer. This presentation will show the lepton+MET and dilepton sign
... More
Presented by Ms. Elizabeth CASTANEDA-MIRANDA
on
24 Oct 2011
at
18:30
The production of high transverse momentum events containing charged leptons
and jets has been measured, using 1 fb-1 of data recorded by the ATLAS
detector in 2011 at sqrts = 7 TeV. No excess beyond Standard Model
expectations is observed, and lower limits on effective cross sections are
set. Using models for string ball and black hole production and decay,
exclusion contours are determined
... More
Presented by Alfedro CASTAÑEDA HDZ.
on
26 Oct 2011
at
19:00
The Standard Model of Particle physics is a spectacularly successful
theory of elementary particles and their interactions, and the only
missing piece
is the higgs bosson, responsible of the mass of the particles and which
has not been yet observed. However, for many years the experiments at the
Tevatron collider, and now experiments at the Large Hadron Collider have
been hunting this el
... More
Presented by Eduard DE LA CRUZ BURELO
on
20 Oct 2011
at
09:00
We discuss the formulation of the Two-Higgs doublet model type III, which
incorporates flavor changing neutral scalar interactions (FCNSI) and CP
violation (CPV) from several sources. CP violation can arise either from
Yukawa terms or from the Higgs potential, be it explicit or spontaneous. We
discuss the limit that includes CPV and Yukawa four textures to control
FCNSI and evaluate the CPV a
... More
Presented by Dr. José HALIM
on
22 Oct 2011
at
19:00
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
HAWC, High Altitude Water Cherenkov, is gamma-ray observatory which is able to survey sky in energy from 100 GeV to 100 TeV and will be localized at Sierra La Negra volcano at 4100 m a.s.l. near to Puebla city. In 2011 it has been installed verification VAMOS array, and in 2012 it will be installed HAWC first step which includes 30 WCDs. In this talk it is presented the result of simulations wher
... More
Presented by Mario CASTILLO
on
24 Oct 2011
at
16:00
Type: Plenary Topical Talk (30 min)
Session:
Electroweak and Flavor Physics
Track: Electroweak and Flavor Physics
Single top quark production at the International Linear Collider (ILC) can be used to obtain
high precision measurements of the Vtb CKM element as well as the effective tbW coupling.
The single top production processes at lepton and photon (e+ e-, e- e-, e gamma and gamma gamma)
colliders have been extensively studied at tree level. The reaction e gamma, is particularly suitable
for precision
... More
Presented by Dr. Francisco LARIOS
on
22 Oct 2011
at
16:00
The spin and flavor content of baryons is studied in the framework of the unquenched quark model in which the effects of quark-antiquark pairs (flavor u, d and s) are taken into account via a microscopic, QCD-inspired, quark-antiquark creation mechanism. The inclusion of the quark-antiquark pairs leads to a relatively large contribution or orbital angular momentum to the proton spin [1] which may
... More
Presented by Dr. Roelof BIJKER
on
25 Oct 2011
at
16:00
Type: Parallel Talk
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
This work focuses on the analysis of data from the Pierre Auger Observatory extensions: Infill and HEAT in the range of 10^17-10^18 eV, because at these energies the transition from the galactic to extragalactic accelerators is expected. Also a spectral feature caused by the drop of the heavy component of the galactic cosmic rays has been predicted.
Presented by Mr. Enrique VARELA
on
24 Oct 2011
at
18:00
With the data from CDF at an integrated luminosity of 6fb−1, we study the same sign
dimuon events in the low mass spectra (below 5GeV) with Pt > 8GeV. Upon applying
tight identification cuts on the leading muon and loose identification cuts in the
second, when reconstructing the muons’ mass, an increased number of events remains
below 5 GeV (for the pre-stripped data from CDFPEWK) at
... More
Presented by Jorge D MORALES
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
Since the first synthesis of plastic scintillators in high energy physics there has been a wide use in several experiments and from different areas.
Because of their fast response they are ideals for experiments where a high velocity for triggering is required.
The present work will show some studies about the synthesis of plastic scintillator for applications in high energy physics.
Presented by Dr. Ildefonso LEÓN MONZÓN
on
20 Oct 2011
at
12:30
We analyze the neutrino electron scattering off electrons and obtain constraints on tensorial couplings. We have studied the non standard interactions formalism as well as the unparticle stuff case. For our analysis we have focused on the recent TEXONO collaboration results. We have obtained new constraints to possible tensorial couplings in both new physics formalisms.
Presented by Estela GARCES
on
25 Oct 2011
at
18:00
Type: Plenary Revision Talk (1 hr)
Session:
Revision
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
The Cosmic Frontier is the study of messenger particles that originate from the non-thermal universe. These messengers include cosmic rays, gamma rays, and neutrinos. Over the past decade we have made enormous progress in understanding the origin and propagation of these particles. We are now in a position to begin to turn these observations into scientific understanding of the cosmos. The cosm
... More
Presented by Dr. Gus SINNIS
on
24 Oct 2011
at
10:00
Type: Plenary Topical Talk (30 min)
Session:
Electroweak and Flavor Physics
Track: Electroweak and Flavor Physics
Within the Standard Model of particle physics (SM), particles decay in a way that conserves lepton flavor numbers. Muons then may decay as follow: $mu^{-}to e^{-} nu_{mu}bar{nu}_{e}$, plus radiative corrections. In many scenarios of physics beyond the Standard Model (BSM), there are additional decay modes, such as $mu^{-}to e^{-}gamma$ and $mu^{-}to e^{-} e^{+}e^{-}$, that violate the lepton flavo
... More
Presented by Prof. Carmine Elvezio PAGLIARONE, Prof. Francesco GRANCAGNOLO
on
26 Oct 2011
at
09:00
Type: Parallel Talk
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
One of the goals of the LHC is the search for the existence of physics Beyond Standar Model, because of that, topics like Supersymmetry (SUSY), Extra Dimensions (XD) and others have taken additional relevance in theoretical research. In this work we present a SUSY model in 5D which does not have lorentz invariance in the extra dimension, and the rupture of this symmetry is given in an explicit way
... More
Presented by Mr. José Didino GARCÍA
on
23 Oct 2011
at
19:00
Type: Plenary Revision Talk (1 hr)
Session:
Revision
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
Doubtless the Lambda Cold Dark Matter (LCDM) model is one of the most successful models Science has created in the last time. Nevertheless, recently with the advance of new observational instruments, some problems of the model have been emerging. In this talk we speak about the successes and problems of the LCDM model and about some alternatives that could go beyond of LCDM.
Presented by Prof. Tonatiuh MATOS
on
20 Oct 2011
at
10:00
Type: Plenary Topical Talk (30 min)
Session:
Electroweak and Flavor Physics
Track: Electroweak and Flavor Physics
Flavour physics in the LHC era has the very ambitious goal to unravel the
intimate structure of Beyond Standard Model physics that is likely to be
dicovered at the LHC. It has also a great potential to search for new
physics beyond the LHC scale. This program requires a very high luminsoity
e+e- collider running principally at the Y(4S) region. SUch a project ,
SuperB, has been recent
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Presented by Dr. Wormser GUY
on
22 Oct 2011
at
11:30
Type: Plenary Topical Talk (30 min)
Session:
Electroweak and Flavor Physics
Track: Electroweak and Flavor Physics
Several topics about this decay are reviewed: its importance, its reduction to the
corresponding factors and their calculation. Experimental information and CPV are
analyzed too.
Presented by Dr. Carlos RAMÍREZ
on
25 Oct 2011
at
16:30
Type: Plenary Topical Talk (30 min)
Session:
Electroweak and Flavor Physics
Track: Electroweak and Flavor Physics
In this talk, I will review some results on masses, mixings and flavour changing neutral currents (FCNC's) of leptons and quarks previously derived in the framework of a minimal S(3)-invariant extension of the Standard Model. Explicit, analytical expressions for the Yukawa matrices of leptons and quarks reparametrized in terms of the corresponding physical masses will be given. I will also give t
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Presented by Prof. Alfonso MONDRAGON BALLESTEROS
on
22 Oct 2011
at
12:30
Type: Plenary Topical Talk (30 min)
Session:
Hadronic Matter
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
The infrared behavior of gluon and ghost propagators in Landau gauge Yang-Mills theory has been at the center of an intense debate over the last decade. Different solutions of the Dyson-Schwinger equations show a power law ("scaling solutions") or a massive behavior (for the gluons, "decoupling solutions") of the propagators in the infrared. The latest lattice results favor the decoupling solution
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Presented by Prof. Axel WEBER
on
21 Oct 2011
at
12:30
We determine the value of the $\omega -\rho- \pi$ mesons coupling ($g_{\omega\rho\pi} $), in the context of the vector meson dominance model, from radiative decays, the $\omega \rightarrow 3\pi$ decay width and the $e^+e^- \rightarrow 3\pi$ cross section.
For the last two observables we consider the presence of a contact term as mimicked by a heavier resonance ($\rho'(1450)$) and find its magni
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Presented by Dr. Genaro TOLEDO
on
22 Oct 2011
at
18:00
Type: Poster
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
We study the rare top decay t -> c l(+)l(-), which involves flavor violation, as a possible probe of new physics. This decay is analyzed with the simplest Standard Model (SM) extensions with additional gauge symmetry and the effective lagrangian formalism. The considered extensions are generic Z' model and left-right model, which include a new neutral gauge boson that allows to obtain the decay at
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Presented by Dr. Ricardo GAITAN
In gauge theories the field configurations often occur in
distinct topological sectors. In a lattice regularized
system with chiral fermions, these sectors can be defined
by adapting the Atiyah-Singer Index Theorem. If such a model is
simulated with local updates of the lattice gauge configuration,
the Monte Carlo history tends to get stuck in one sector for many
step, in particular on fine
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Presented by Dr. Wolfgang BIETENHOLZ
on
25 Oct 2011
at
18:30
Type: Plenary Topical Talk (30 min)
Session:
Electroweak and Flavor Physics
Track: Electroweak and Flavor Physics
In this talk we review the advances towards the conceptual design of a Mexican Light Source arising from the "First Mexican Synchrotron Radiation Users Meeting" and of the "First Mexican Particle Accelerator School" held this year in México.
Presented by Dr. Mauro NAPSUCIALE
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
In this talk, we shall study how heterotic orbifold compactifications can lead to an acceptable flavor structure, avoiding the constraints on flavor-changing neutral currents usually extant in stringy supersymmetric models. The natural appearance of flavor symmetries plays a crucial role.
Presented by Dr. Saul RAMOS-SANCHEZ
on
24 Oct 2011
at
13:00
Quantum chromodynamics (QCD) is the modern theory of the strong nuclear force. For many years, many of its amazing properties were believed to be true, but had not yet been demonstrated. In this review, I survey several results from lattice gauge theory, which start with the basic equations of QCD and then, via large-scale computing, establish these features. We now know, for example, how QCD g
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Presented by Dr. Andreas Kronfeld KRONFELD
on
21 Oct 2011
at
10:00
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
We study a possible suppression of the extragalactic neutrino flux due to a nonstandard interaction during neutrino propagation. In particular, we study neutrino interaction with an ultra-light scalar field dark matter. We show that the extragalactic neutrino flux may be suppressed by such an interaction, leading to a new mechanism to reduce the ultra-high energy neutrino flux. We conclude that ca
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Presented by Dr. Celio MOURA
on
24 Oct 2011
at
16:30
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
A lot of progress is being accomplished in measuring the characteristics of the Ultrahig Cosmic Rays by the Pierre Auger Observatory in the shoutern hemisphere. Althougth these messengers has been detected with unprecedented statistics, the nature and origin remain enigmatic. Their energy spectra, their arrival directions, and the properties of the cascades they initiate are studied in an attempt
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Presented by Dr. Humberto SALAZAR
on
20 Oct 2011
at
13:00
The dynamics of the time evolution of an order parameter towards equilibrium is a much-studied problem in nonequilibrium statistical mechanics. Typically, when a system consisting of a two-phase mixture in a homogeneous phase is rapidly driven across the critical coexistence temperature into a nonequilibrium state, fluctuations around the initial homogeneous state will develop; the system will bre
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Presented by Prof. Gastao KREIN
on
21 Oct 2011
at
11:30
The study of the tau lepton physics plays a significant role in the present accelerator program. Due to the great variety of the tau decay channels, its phenomenology offers an interesting scenario to search for potential effects of new physics. In particular, the tau weak moments remain unexplored beyond the standard model (SM), which predicts negligible values for these properties. This opens
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Presented by Mr. Agustin MOYOTL-ACUAHUITL
Type: Plenary Topical Talk (30 min)
Session:
Astroparticles, Cosmology, Strings and Beyond the Standard Model
Track: Astroparticles, Cosmology, Strings and Beyond the Standard Model
In this talk I review the motivations for introducing fundamental scalars in particle physics,
including the SM. Then I discuss the LHC bounds on the SM Higgs mass and its implications.
How the Higgs search is modified in extensions of the SM with 3 Higgs doublets is also
discussed.
Presented by Dr. Lorenzo DIAZ-CRUZ
on
20 Oct 2011
at
11:30
We perform a MC simulation of a system consisting of two quarks and two antiquarks, Using a dynamical model of the strong interaction we explore the formation of mesons and/or tetraquark for a set of different density conditions.
We characterize the single properties of these states and the modifications upon the mixing. The competition among the different configurations and its implications on
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Presented by Mr. Ivan TOLEDANO
