Event calendar file
2-6 November 2015
Playa Mazatlán Beach Hotel
Mexico/BajaSur timezone
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Displaying 69
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69
Session:
Cocktail and Poster Session
We present the branching ratio of the $\tau^{-} \to \pi^{-}\pi^{0}\l^{+}\l^{-}\nu_{\tau}$ decays, with $l=\mu,e$. In this work only the total Inner Bremmstralung contribution to the amplitude is considered. The Form Factor in the hadronic vertex is parametrized from a fit to tau -> pi pi nu_tau data from the Belle experiment including three resonances ($\rho(770)$, $\rho(1450)$ and $\rho(1700)$).
... More
Presented by Jorge Luis GUTIÉRREZ
on
3 Nov 2015
at
17:05
Session:
Beyond the Standard Model
In this talk we review the 2HDM and the I,II and III type. We calculate the loop level decay for the pseudoscalar and we use the constraints from LHC to explore the A -> gamma gamma channel.
Presented by Dr. Javier-Andres ORDUZ-DUCUARA
on
4 Nov 2015
at
17:20
Type: Contribution to parallel sessions
Session:
Astro Particles I
Track: Physics Beyond the Standard Model
Recently ANTARES collaboration presented a time dependent analysis
to a selected number of flaring blazars to look for upward going muon events produced from the charge current interaction of the muon neutrinos. We use the same list of flaring blazars to look for possible positional correlation with the IceCube neutrino events. We observed that six FSRQs and two BL Lac objects from the list are
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Presented by Dr. Sarira SAHU
Session:
Flavour Physics
We will present a short review of results on bottom quark physics obtained by the CMS experiment during the LHC Run I. Mexican contributions will be emphasized. Plans for and preliminary results of Run II analyses will be discussed.
Presented by Ivan HEREDIA DE LA CRUZ
on
5 Nov 2015
at
16:20
Session:
Beyond the Standard Model
The Higgs sector of the minimal S(3)-invariant extension of the Standard Model with a Higgs sector including CP violation is analyzed. Three SU(2) doublets Higgs fields with complex vev's provide an interesting scenario to analyze the Higgs masses spectrum, trilinear self-couplings and CP violation.
We present how the spontaneous electroweak symmetry breaking coming from three $S(3)$ Higgs field
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Presented by Dr. Rodriguez EZEQUIEL
on
3 Nov 2015
at
16:20
Session:
Quantum Chromodynamics
For the flavour-singlet heavy quark system of charmonia, we compute the masses of the ground
state mesons in four different channels: pseudo-scalar (ηc (1S)), vector (J/Ψ(1S)), scalar (χc0 (1P ))
and axial vector (χc1 (1P )), as well as the weak decay constants of the ηc (1S) and J/Ψ(1S) and
the charge radius of ηc (1S). The framework for this analysis is provided by a symmetry-preservin
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Presented by Mr. Marco Antonio BEDOLLA
on
5 Nov 2015
at
17:00
Session:
Matter in Extreme Conditions
We study the collective effects that are present on the high multiplicity events on p-p and pPb collisions which current understanding is still under debate. By using the qualitative description of the String Percolation Model we are able to describe some of these effects in terms of the energy density of the system.
Presented by Dr. irais BAUTISTA
on
3 Nov 2015
at
16:00
Session:
Cocktail and Poster Session
Asuming a U boson wich is masive and neutral as a dark matter particles are analyzed. This work is a first step to study the interactions between ultra high energy cosmic rays with a hypothetical dark matter particle background, composed by U bosons and investigate possible signals of new physics in the highest energy cosmic rays spectrum. In order to do this, a framework of pyisics beyond the Sta
... More
Presented by Mr. David RIVERA
on
3 Nov 2015
at
17:00
Session:
Dark Matter 1
The emergence of gauge particles (e.g., photons and gravitons) as Goldstone bosons arising from spontaneous symmetry breaking is an interesting hypothesis which would provide a dynamical setting for the gauge principle. We investigate this proposal in the framework of a general non-abelian Nambu model (NANM), effectively providing spontaneous Lorentz symmetry breaking in terms of the correspondin
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Presented by Mr. Carlos ESCOBAR
on
2 Nov 2015
at
16:40
Presented by Dr. Juan BARRANCO
on
3 Nov 2015
at
13:00
Type: Contribution to parallel sessions
Session:
Matter in Extreme Conditions
Track: Physics Beyond the Standard Model
Tests of gauge theories are being constantly raised to higher levels of experimental precision. At the theorical level, one is correspondingly pushed to obtain analytical results for loop calculations to achieve the same. We calculate the complete one-loop off-shell three-point scalar-photon vertex in arbitrary gauge and dimension for scalar quantum electrodynamics. Explicit results are presented
... More
Presented by Mrs. Yajaira CONCHA-SÁNCHEZ
on
3 Nov 2015
at
16:20
Session:
Cocktail and Poster Session
Non perturbative studies of Schwinger-Dyson equations require their infinite, coupled tower to be truncated in order to reduce them to a practically solvable set. In this connection, a physically acceptable ansatz for the three point vertex is the most favorite choice. Scalar quantum electrodynamics (sQED) provides a simple and neat platform to address this problem. The most general form of the th
... More
Presented by Mr. L. Albino FERNÁNDEZ
on
3 Nov 2015
at
17:10
Accelerator experiments located underground are suitable for the study of atmospheric muons. The use of high-energy collider detectors for cosmic-ray physics was pioneered during the era of the Large Electron-Positron (LEP) collider at CERN by ALEPH, DELPHI and L3 collaborations. A development of these programs is possible at the Large Hadron Collider (LHC), where experiments like ALICE and CMS op
... More
Presented by Mario RODRÍGUEZ CAHUANTZI
on
2 Nov 2015
at
16:40
Type: Contribution Plenary Talk
Track: Physics Beyond the Standard Model
The existence of non-baryonic Dark Matter (DM) is well established by cosmological and astrophysical probes, however its detailed nature still remains elusive. Among the extensions of the Standard Model explaining the DM relic abundance, the simplest one is the addition of an inert scalar to the theory. In this talk I intend to give a brief review of some DM models and the possible connection wit
... More
Presented by Eduardo PEINADO
on
2 Nov 2015
at
12:30
Session:
Cocktail and Poster Session
We consider the possible detection of Supernova
neutrinos via Coherent Neutrino-Nucleus Scattering
in a scintillation detector. The envisaged
applications include the separate determination
of the energy and temperature of the
neutrinos and antineutrinos of the second and
third family by exploiting the spectral information
encoded in the recoiling nuclei and inherited
from the impinging n
... More
Presented by Dr. Catalina ESPINOZA
on
3 Nov 2015
at
17:15
Session:
Cocktail and Poster Session
In this paper we study the annihilation of dark matter, considering this as a neutral particle with nonzero magnetic and/or electric dipole moments. We compute of the annihilation cross section of the process χχ ̅ → γγ, with a general form of the coupling χχ ̅ γ in the frame of an extension of the Standard Model. It is considered that the dark matter mass is in the range 0 < mχ
... More
Presented by Mr. Concepción ARELLANO-CELIZ
on
3 Nov 2015
at
17:20
Session:
Quantum Chromodynamics
A brief talk about the early work on the decay channels Lambda_b to mumu Lambda^0 and Lambda_b to mumu Lambda(1520). Besides the observation on the mass distribution we aim to measure some parameters as branching ratio, lifetime, among others. This work is currently being done in the CMS experiment at CERN.
Presented by Mrs. Cecilia DURAN
on
5 Nov 2015
at
16:20
Type: Contribution to parallel sessions
Session:
Dark Matter 1
Track: Physics Beyond the Standard Model
The status of electroweak precision tests at the energy and intensity frontiers is reviewed and possible future directions will be discussed.
Presented by Prof. Jens ERLER
on
5 Nov 2015
at
09:00
Session:
Flavour Physics
In this work we use a parametrization of Yukawa matrices of the 2HDM-III using invariant subgroups of SU(3) in order to reduce the number of free parameters of the model. It is shown how the flavour violating couplings of leptons are naturally suppressed as expected. We will show explicit relations of the parameters of the SU(3) with the parameters of the 2HDM-III with Cheng and Sher textures. Usi
... More
Presented by Lao Tse LÓPEZ
on
6 Nov 2015
at
17:20
We first sketch the general concepts of the lattice
regularisation in quantum field theory, which does not
require gauge fixing, and which enables Monte Carlo
simulations that yield non-perturbative numerical measurements
of observables. We then address the status of lattice QCD
with 2+1 flavours of dynamical quarks, where hadron masses
can now be evaluated from the first principles of QCD
... More
Presented by Dr. Wolfgang BIETENHOLZ
on
5 Nov 2015
at
11:30
Since the first measurement of the hyperfine ground state splitting of deuterium and hydrogen, experimental results have pushed theoretical physics to include higher order corrections to the magnetic moment of the muon. The latest result from BNL(2004) shows a discrepancy ~ 3.6 sigma with theoretical prediction. Since there are plans in J-PARC and Fermilab for reducing the experimental error a fac
... More
Presented by Mr. Adolfo GUEVARA
on
5 Nov 2015
at
17:20
In this talk I review some of the current efforts to understand the behavior of hadronic matter under the extreme conditions of high density and temperature such as the ones produced in Relativistic Heavy Ion collision.
Presented by Dr. Alejandro AYALA
on
4 Nov 2015
at
09:00
Session:
Beyond the Standard Model
In this work we find a possible SUSY flavor structure in low-energy SUSY model in order to
test data results on flavor violation in charged lepton sector.
We calculate flavor non-conserving 1-loop processes within an MSSM flavor
extended model, through trilinear terms in supersymmetry soft breaking Lagrangian.
We obtain FV couplings in mass eigenstates avoiding qualitative MIA method and
... More
Presented by Mr. Rafael ESPINOSA CASTAÑEDA
on
3 Nov 2015
at
16:00
We evaluate the impact of an external magnetic f ield on the chiral symmetry and con finement/
deconfin ement transition temperatures by using a confining vector-vector contact interaction
model for quarks. Exploring the evolution of the chiral condensate and the confi ning scale of the
model with temperature T and magnetic field strength eB (e represents the fundamental electric
charge), we
... More
Presented by Mr. Aftab AHMAD
on
3 Nov 2015
at
16:40
Session:
Dark Matter 1
The DAMIC Collaboration has set up an experimental array of Charge-Coupled Devices (CCDs) in a nickel mine, and has developed all analysis tools to discern any known trace of conventional matter from what a DM particle could produce when crossing the CCDs. In order to calibrate the signals from these CCDs, scientists in the Antonella Collaboration have designed experiments to quantify neutron-sili
... More
Presented by Dr. Marco REYES
on
2 Nov 2015
at
16:00
Session:
Quantum Chromodynamics
We present our latest results in the study of momentum imbalance as a function of jet asymmetry in high-energy heavy-ion collisions. We have included all leading order (LO) 2->2 and 2->3 parton processes in pQCD. The produced partons lose energy within the QGP and hadronize collinearly when they leave it. The energy and momentum deposited into the plasma is described using linear viscous hydrodyna
... More
Presented by Maria Elena TEJEDA YEOMANS
Session:
Cocktail and Poster Session
One of the most surprising cosmological discoveries in recent decades has been the accelerated expansion of the Universe. The first convincing measurement of cosmic acceleration came from observations of distant type Ia supernovae, which appeared less luminous than expected [Riess et al. 1998, Perlmutter et al.1999]. These observations can be explained by either modifying General Relativity on co
... More
Presented by Dr. MAriana VARGAS MAGANA
In this poster we present the installation of the Large Angle Beamstrahlung Monitor (LABM) at Belle II performed in the summer pf 2015 in superKEK. this monitor will allows a novel aproach to study the beam collisions.
Presented by Mr. SAMUEL DOEG IZAGUIRRE GAMEZ
on
2 Nov 2015
at
17:55
Session:
Flavour Physics
Recently, the CMS collaboration announced an excess of events in the search of the Higgs to mu tau decay, which translates in a non-vanishing H-mu-tau coupling of the order of 3.6 X 10^{-3} at 2.4 standard deviations. In this talk we present results on a study the consistency of this coupling with the upper limits on lepton flavor violation in quarkonium and tau decays.
Presented by Prof. Mauro NAPSUCIALE
on
5 Nov 2015
at
16:40
Session:
Flavour Physics
We propose an alternative evaluation of the long-distance weak annihilation (WA) contribution to the rare semileptonic $B^{\pm}\to (\pi^{\pm},K^{\pm})\ell^+\ell^-$ ($\ell=e,\,\mu$) decays. Although the WA contribution does not contribute to solve the possible breaking of lepton-universality observed by LHCb in the $B^{\pm}\to K^{\pm}(\mu^+\mu^-/e^+e^-)$ ratio, nor provides an important hadronic co
... More
Presented by Mr. Sergio TOSTADO
on
6 Nov 2015
at
17:00
I calculate the pion transion form factor to two photons.
Presented by Dr. Adnan BASHIR
on
5 Nov 2015
at
12:30
The goal and biggest challenge for accelerators like LHC is to provide the best luminosity to allow the detectors to collect data in a reasonable amount of time, but since the creation of the beam in the firsts stage of acceleration achieve a good Luminosity is already a challenge, due collective effects that can decrease the beam quality and propagate this problem until the data collection.
Presented by Mr. Cristhian Alfonso VALERIO LIZARRAGA
on
6 Nov 2015
at
13:30
Session:
Cocktail and Poster Session
ALICE is one of four large experiments at the CERN Large Hadron Collider.
Located 52 meters underground with 28 meters of overburden rock,it has also been used to detect atmospheric muons produced by cosmic ray interactions in the upper atmosphere.
The muon charge ratio reflects the excess of pi+ over pi- and K+ over K- in the forward fragmentation region of proton initiated interactions togeth
... More
Presented by Ms. Emma GONZALEZ HERNANDEZ
on
3 Nov 2015
at
17:25
Session:
Matter in Extreme Conditions
In this talk the measurement of the multiplicity dependence of
charged pion, kaon, and (anti)proton production in p-Pb collisions
at $\sqrt{s_{\rm NN}}\,=5.02$\,TeV at high transverse momenta (<20
GeV/$c$) will be shown, using the ALICE detector at the LHC.
The transverse momentum range of the measurement is extended with
respect to the already published low-pT results up to 20 GeV/$c$ in
s
... More
Presented by Gyula BENCENDI
on
4 Nov 2015
at
17:00
Session:
Cocktail and Poster Session
An analysis of neutrino physics, mass and mixing matrices, is shown in the S(3) extension of the Standard Model. We establish the conditions under which the results of current neutrino physics can be recovered outside the Standard Model. The Majorana Lagrangian is included to give neutrinos mass through the see-saw mechanism type I, implying a hybrid model. Then, the PMNS matrix $V_{PMNS}$ is anal
... More
Presented by Rodolfo Enrique BARRADAS PALMEROS
on
3 Nov 2015
at
17:30
Session:
Beyond the Standard Model
When we consider a new neutral current interaction, the amplitude for the scattering process, if the neutrinos are Majorana particles, is different from the Majorana amplitude in the Standard Model if the coupling constants for the neutrino are complex numbers. Under this model we study the total cross sections for the neutrino-electron scattering in both case, Dirac and Majorana. Finally, we com
... More
Presented by Mr. Azarael YEBRA
on
4 Nov 2015
at
17:00
Session:
Cocktail and Poster Session
Motivated by the attractive features that offer the study of weak properties of the charged leptons as part of the search of new physics. We calculated, at the one loop level, through effective couplings the contributions from new scalars to the anomalous weak dipole moments of the charged leptons. We have obtained analytical expressions for the differents kinds of contributions. A numerical ev
... More
Presented by Gerardo HERNÁNDEZ-TOMÉ
on
3 Nov 2015
at
17:35
It has been well established that in ultra-relativistic heavy ion collisions the strongly coupled Quark-Gluon Plasma (sQGP) is formed, its properties are being studied at the new LHC energy frontier.
ALICE, a heavy ion experiment at the LHC, has performed several measurements to probe the physics of sQGP. In this talk, a review of recent ALICE results will be presented, this comprises measurem
... More
Presented by Dr. Antonio ORTIZ VELASQUEZ
on
3 Nov 2015
at
10:00
We present recent results obtained through the phenomenology of Fragmentation Functions of a parton to a pion pair. We will discuss the fitting techniques for both the Dihadron Fragmentation Functions themselves as well as some Parton Distribution Functions (PDF) that can be extracted from data thanks to the knowledge of the fragmentation part. Those include the transversity PDF and the subleading
... More
Presented by Dr. Aurore COURTOY
on
5 Nov 2015
at
13:00
In the framework of Dyson-Schwinger Equations (DSEs), we present our recent results on the pion-to-two photons transition form factor. This computation involves carefully done quark propagator and Bethe-Salpeter amplitudes parametrizations, as well as a fully consistent quark-photon vertex. It is the first calculation done within the mathematical framework of DSEs, and a very important input for t
... More
Presented by Khépani RAYA
on
4 Nov 2015
at
17:20
The discovery of symmetries in nature has played a fundamental role in the understanding of physical phenomena. In most of the cases, such symmetries provide a zeroth-order approximation and require some kind of breaking in such a way to make the theoretical predictions consistent with the experimental data. In particular, CPT symmetry and active Lorentz covariance, which certainly constitute t
... More
Presented by Dr. LUIS URRUTIA
on
2 Nov 2015
at
13:00
The origin, composition and acceleration mechanism of high-energy cosmic rays (E > 10**15 eV) have been long-standing mysteries in astroparticle physics. Their resolution is by no means an easy task, as it implies to overcome several theoretical and experimental
challenges. In spite of this, during the last decade considerable progress has been made as different instruments have provided us with
... More
Presented by Dr. Juan Carlos ARTEAGA VELAZQUEZ
on
3 Nov 2015
at
12:30
Session:
Quantum Chromodynamics
Saturation of the gluon density provides a natural way to tame the power-like growth of gluon distributions at small values of Bjorken x, observed in DIS experiments: at a certain value of x, the conventional low density expansion in the hard scale is argued to break down and gluon recombination effects, characterized by the saturation scale Qs(x) and non-linear QCD evolution, sets in. Two particl
... More
Presented by Dr. Martin HENTSCHINSKI
on
5 Nov 2015
at
16:00
Session:
Cocktail and Poster Session
The long-sought Higgs Boson has been finally found in the CERN Large Hadron Collider (LHC), which was a milestone for the community of particle physics. However, the standard model (SM) of the elementary particles has no answer to all the phenomena observed in nature. For instance, this theory cannot explain the neutrino oscillation puzzle, the origin neutrino masses, the flavor problem, etc. Fo
... More
Presented by Mr. Ricardo SÁNCHEZ VÉLEZ
on
3 Nov 2015
at
17:40
Session:
Cocktail and Poster Session
The field of ultra high energy cosmic rays still has many important unresolved questions in spite of the constant accumulation of new data characterized by lower statistical and systematic errors. We discuss the latest experimental observations from the Telescope Array and the Pierre Auger Observatories, with emphasis on the structures found in the energy spectra. We also review the latest results
... More
Presented by Dr. Luis VILLASEÑOR
The IceCube collaboration has observed 37 neutrino events in the energy range 30 TeV<E<2 PeV and the sources of these neutrinos are unknown. Here we have shown that positions of 12 high energy blazars and the position of the FR-I galaxy Centaurus A, coincide within the error circles of ten IceCube events, the later being in the error circle of the highest energy event so far observed by IceCube.
... More
Presented by Luis Salvador MIRANDA
on
2 Nov 2015
at
16:00
Session:
Cocktail and Poster Session
In experiments at LHC, such as ALICE, one of the interesting studies is to understand the behaviour of the systems created in pp, p-Pb, or Pb-Pb collisions at high multiplicities, this different behaviour can be seen analyzing distributions such as the mean transverse momentum versus multiplicity, several MC models try to discribe the physics behind. In this poster we present a spherocity analysis
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Presented by Mr. Héctor BELLO
on
3 Nov 2015
at
17:45
The Belle-II experiment represents a collaboration of about 650 researchers from around the world working to build the next-generation of B-factory experiments at the Intensity Frontier. Located in Japan, the Belle II detector will explore physics phenomena at scales of about 100 TeV through precision measurements, which cannot be studied directly using high energy accelerators such as the LHC. In
... More
Presented by Dr. Ivan HEREDIA DE LA CRUZ
on
6 Nov 2015
at
09:00
Type: Contribution to parallel sessions
Session:
Dark Matter 1
Track: Physics Beyond the Standard Model
The CONNIE experiment uses fully depleted, high resistivity CCDs
as particle detectors in an attempt to measure for the first time
the Coherent Neutrino-Nucleus Elastic Scattering of antineutrinos
from a nuclear reactor with silicon (Si) nuclei. The low energy
threshold (of order ~10 eV), and the relatively large mass
of the CONNIE CCDs make them an ideal detector technology to
observe
... More
Presented by Dr. Alexis AGUILAR-AREVALO
on
2 Nov 2015
at
16:20
Session:
Beyond the Standard Model
In this talk we will present a recent result on the Gatto-Sartori-Tonin relation which is a functional relation between a mixing angle and one fermion mass ratio. We do a systematic study of it, finding by this, the necessary conditions to be met in order to obtain it within fermion mixing. We begin by considering two Dirac fermion families. From a mathematical viewpoint, it is found that a suffic
... More
Presented by Dr. Ulises Jesús SALDAÑA SALAZAR
on
3 Nov 2015
at
16:40
We perform a 3-D Monte Carlo simulation of a system composed of two identical light quarks ($qq$) and two identical antiquarks ($\bar Q\bar Q$) that can be linked either as two mesons or as a tetraquark, incorporating quantum correlations between identical particles and an effective many-body potential between particles . We characterize each case and determine wether it is energetically more favo
... More
Presented by Dr. Genaro TOLEDO
on
5 Nov 2015
at
16:40
Session:
Flavour Physics
In this talk, recent measurements of top quark properties with the ATLAS experiment using the full data set recorded during LHC Run-I are shown. The mentioned properties include: Spin Correlation, W-boson Polarization, Color Flow, Charge Asymmetry, CP-Violation, Top Mass and Top Width in events with a top and anti-top quark pair.
The talk is focused on recent results over the measurement of th
... More
Presented by Dr. Javier Alberto MURILLO QUIJADA
on
5 Nov 2015
at
16:00
Second class currents were predicted back in 1958 by Weinberg as non-strange weak processes with a "wrong" combination of parity and G-parity, meaning they vanish in the very accurate isospin symmetry limit and are therefore suppressed (while new physics contributions are generally not).
Searches for such SM processes have been carried out both in particle and nuclear physics with null results s
... More
Presented by Dr. Pablo ROIG
on
4 Nov 2015
at
10:00
Session:
Matter in Extreme Conditions
My area of interest lies broadly in hadron physics. I have focused on the calculation of the electromagnetic and transition form factors, based upon a vector-vector contact interaction. The internal structure of the nucleon is a defining problem for nuclear physics. The most basic observables which reflect the composite nature of the nucleon are its electromagnetic form factors. Further, the elast
... More
Presented by Ms. Laura Xiomara GUTIERREZ GUERRERO
Session:
Cocktail and Poster Session
We would like to calculate the Bs mixing CP phase in a two Higgs doublet model in a generic type which couples both doublets to both types of quarks. In order to establish the viability of this model or restriction on the free parameter which represent the flavor mixing.
Presented by Mr. Rodrigo GONZALEZ QUAGLIA
on
3 Nov 2015
at
17:50
