24-26 May 2017
Cinvestav-Zacatenco
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Contribution List

Displaying 147 contributions out of 147
In this work we present a new project that consist in the preliminary design of an electron linear particle accelerator (eLINAC) capable of deliver beam at different energies from 5 MeV to 100 MeV using the S-Band acceleration frequency, designed by the Comunidad Mexicana de Aceleradores de Particulas. The design takes in to account the beam space charge and realistic magnet distributions to creat ... More
Presented by Mr. Cristhian Alfonso VALERIO LIZARRAGA
Presented by Dr. Saul RAMOS-SANCHEZ on 24 May 2017 at 15:45
Presented by Dr. irais BAUTISTA on 25 May 2017 at 09:00
A study to implement an algorithm to reconstruct gamma ray events measured by the HAWC detector, whose core has arrived outside the detection network of the experiment is presented. The main goal is to improve the reconstruction of the energy regardless of the location where the atmospheric shower arrives to the detector. The study consists of exploring parameters based on the shape of the footpre ... More
Presented by Mr. Fidel ESTRAFA JIMÉNEZ
Presented by Dr. Arturo FERNANDEZ TELLEZ on 25 May 2017 at 12:15
Presented by Dr. Emilie PASSEMAR on 24 May 2017 at 09:45
The High Luminosity will be a challenge for the detector, the high rate of particles coming of the collisions and the radioactivity induced in the material of the detector will cause significant damage and could result in a progressive degradation in his performance. In order to study the expected flux and hit-rate of background particles and the impact in the detector, the FLUKA tool is used ... More
Presented by Mr. Alejandro NAVA MARTÍNEZ
Investigadores y estudiantes del Instituto de Ciencias Nucleares y el Instituto de Ingeniería de la UNAM participan en las colaboraciones internacionales DAMIC (Dark Matter In CCDs) y CONNIE (COherent Neutrino Nucleus Interaction Experiment). Ambos experimentos emplean CCD de calidad científica como elementos sensibles, ya que su bajo nivel de ruido (~2e-) y su alta pureza los hace detector ... More
Presented by Mr. youssef SARKIS MOBARAK
In this work we present the new joint project of the Universidad Autonoma de Sinaloa and CERN's beam department for the design and creation of an ion source capable of deliver up to 100 mA of protons and 30 mA of H-, also the electromagnetic design and construction of resonant cavities for electron linear accelerators within the University of Sinaloa with the aim to produce high perveance beams w ... More
Presented by Mr. Cristhian Alfonso VALERIO LIZARRAGA
Presented by Mr. Cristhian Alfonso VALERIO LIZARRAGA on 24 May 2017 at 17:45
Omar López-Cruz Astrofísca, Instituto Nacional de Astrofísica, Óptica y Electrónica Luis E. Erro No. 1 Sta. Ma. Tonantzintla, Pue. C.P. 72840 omarlx@inaoep.mx
Presented by Dr. Omar LÓPEZ-CRUZ
Presented by Dr. Omar LÓPEZ CRUZ on 24 May 2017 at 14:45
For last four decades all attempts to resolve the fate of information in black hole evaporation process, respecting fundamental principles of quantum mechanics and equivalence principle of general relativity, have faced various difficulties. For these approaches, the main aim has been to ensure no loss of information in evaporation process. In this talk, we first summarize the problem associated w ... More
Presented by Dr. Sujoy MODAK
Presented by Mr. Jesús Ricardo ALVARADO GARCÍA on 26 May 2017 at 13:15
MiniBooNE-DM realizó una búsqueda de la producción de materia oscura a través de bosones vectoriales mediadores utilizando el haz de protones de 8 GeV del Booster de Fermilab, en una corrida dedicada con 1.86E20 protones entregados al bloque de acero que frena el haz (beam dump). El detector MiniBooNE , localizado a 490 m del bloque, es sensible a las interacciones de partículas de materia ... More
Presented by Dr. Alexis AGUILAR-AREVALO
A principios del año pasado se anunció la observación de una nueva estructura en la distribución de masa invariante del B^0_{s}-pi, el X(5568), la cual atrajo la atención en la investigación de estados exóticos por su peculiar característica de estar formado por cuatro sabores distíntos de quarks y que, de confirmarse su existencia, sería el mejor candidato a un tetraquark. Durante es ... More
Presented by Mr. Ramirez Garcia MATEO
Presented by Dr. Javier Alberto MURILLO QUIJADA on 24 May 2017 at 09:15
Presented by Ms. Brenda FABELA ENRIQUEZ on 24 May 2017 at 18:15
The Two Higgs Doublet Model (2HDM) is one of the simplest extension of the Standard Model, which introduces an additional Higgs doublet. In this model, five physical bosons remain after the Spontaneous Electroweak Symmetry Breaking (EWSB); among them a pair of charged scalar bosons $H^{\pm}$. In this talk, an overview of the present status of this study is given for the main decay channels of $H^{ ... More
Presented by Ms. Brenda FABELA ENRIQUEZ
We know that there are no flavor-changing neutral currents in the standard model at tree level. However, within two-Higgs doublet model extensions, these currents are generated, so mechanisms must be included that avoid them. Proposed mechanisms as discrete symmetries or mass-matrix proportionality assumptions are artificial and forced. Here we consider chiral-scalar doublet models, and s ... More
Presented by Mr. Santiago DOMÍNGUEZ
Presented by Santiago DOMÍNGUEZ on 25 May 2017 at 18:15
The CP violation is included in the SM by the complex phase of the CKM matrix but it is not enough to explain the baryon asymmetry, so it is important the study of new sources of CP violation beyond the SM. It is believed that the top quark play a special role due to its large mass and the study of its phenomenology might shed lights of new physics effects. At the CERN Large Hadron Collider (LHC) ... More
Presented by Mr. Alan Ignacio HERNÁNDEZ JUÁREZ
CUORE is a cryogenic bolometer experiment; consisting of a 1-ton scale array of 988 TeO2 crystals, designed mainly to search for Neutrinoless Double Beta Decay Decay in 130-Te isotope, an observation hypothesized to occur only if neutrinos are Majorana particles. These crystals will act both as the source of the decay and as detector and need a base temperature around 10 mK. In order to cool ... More
One of the most active areas in the high energy astrophysics is related with the sources of the ultra-high energy cosmic rays (UHECR). One indicator that allow us to clarify from different astrophysics scenarios, is the mass composition of the primary cosmic radiation which is the main objective of AugerPrime. To achieve this, is planned to complement the original surface array composed by water C ... More
Presented by Ms. Alejandra PARRA
Presented by Mr. Gustavo Hazel GUERRERO NAVARRO on 26 May 2017 at 12:30
In this work is presented the electromagnetic decay of baryons problem, where the current experimental data for the radiative decay width shows that these values are approximately two times larger than the predictions of the constituent quark model. The main aim is to solve this problem with the approach of effective degrees of freedom for quarks in the quark model, considering also the sea quarks ... More
Presented by Mr. Gustavo Hazel GUERRERO NAVARRO
Cosmic ray detectors are used in the mesuasuments and characterization of the flow of cosmic partirles; in the detectors diferentes techniques are used: Cherenkov radiación, scintillation, ionization among others. We propone the planing, design, and construcción of a 64 channel Cherenkov type detector. We present advanced and preliminary resulta in the proponer detector.
Presented by Mr. Carlos CERVANTES VERA
El Observatorio Pierre Auger estudia rayos cósmicos de las más altas energías, y combina ~ 1660 estaciones o tanques de agua que cubren un área de 3000 km2 llamado el Detector de Superficie (DS) con 27 telescopios de fluorescencia puestos en la periferia del DS llamado Detector de Fluorescencia (DF). El DS no necesita ser operado manualmente y opera continuamente teniendo un ciclo de trab ... More
Presented by Mr. Enrique VARELA
The High –Altitude Water Cherenkov Gamma-Ray Observatory (HAWC), located on Pico de Orizaba at 4100 m over the see level, is designed to indirectly detect gamma ray emissions arriving from high energy objects such as pulsars, nebulae and distant galaxies. Gamma ray measured by HAWC must be directed right to the place where they were produced, which allows to identify sources which were never ... More
Presented by Mr. JOSE IVAN ABADIA SARMIENTO
Presented by Dr. Alexis AGUILAR-AREVALO on 25 May 2017 at 11:15
It has been proposed in the past, that the three families of fermions are related by a symmetry, given that before Electro Weak Spontaneous Symmetry Breaking (EWSB), the particles have no mass and it is impossible to distinguish between generations. The symmetry that represents this situation, is the S3 permutational symmetry. The S3 symmetry group has three irreducible representations, one double ... More
Presented by Mr. Humberto REYES
Presented by Mr. Humberto REYES on 25 May 2017 at 17:45
La existencia de nuevas partículas cuyas masas se podrían encontrar en la región de los TeVs son predichos por extensiones del Modelo Estándar, una de estas extensiones es el modelo llamado Littlest Higgs model (LTHM), en donde es predicha la existencia de una nueva partícula seudoescalar masiva neutra. En este contexto proponemos analizar el decaimiento ΦP → γγ, donde γ simboliza al fo ... More
Presented by DAVID ESPINOSA
En 2015 CMS obtuvo un pequeño exceso con una confiablidad de 2.4 sigmas para el decamiento h -> \tau \mu, pero al año siguiente dicho exceso dejo de observarse. Sin embargo, para llegar a un resultado concluyente es necesario acumular más estadística experimental. Este hecho nos muestra la importancia que tiene el proceso h \to \tau \mu en la búsqueda de efectos de nueva física dentro ... More
Presented by Mrs. Sindy CHAMORRO SOLANO
Analizamos el decaimiento del pseudo-escalar neutro ΦP como una nueva partı́cula masiva predicha por el Modelo de Higgs Más Pequeño (Littlest Higgs Model), siendo este un modelo alternativo que busca solucionar el problema de la jerarquı́a. Enfocaremos nuestro estudio a bosones electrodébiles neutros, particularmente en los decaimientos a nivel de un lazo de Φ P → γZ, ZZ. Además, se ... More
Presented by Mr. Eligio CRUZ
Cosmic ray detectors are constructed to fit many purposes and different materials and geometries. To test materials and to measure the flux of cosmic rays, we planned, designed, constructed and test a 4 channel cosmic ray detector based on 2.54 cm X 10.32 cm X 20.64 cm Aluminum block and two 0.6 cm X 10.32 cm X 20.64 cm plastic scintillator completed covered with 0.2 cm tick Aluminum foil. The sig ... More
Presented by Mr. Alfredo MARTÍNEZ VEGA
Presented by Dr. Ildefonso LEÓN MONZÓN on 25 May 2017 at 10:30
REDTOP is an experiment, at its proposal stage. It belongs to the High Intensity class of experiments. REDTOP will use a 1.9 GeV continuous proton beam impinging on a fixed target. It is expected to produce about $10^{13}$ η mesons per year. The main goal of REDTOP is to look for physics beyond the Standard Model by detecting rare η decays. The η meson has unique properties which make it an exc ... More
Presented by Mr. Darío GONZALEZ
En el universo existen fuentes astrofísicas que producen partículas, rayos cósmicos. Son muy energéticas. Viajan grandes distancias e interactúan con la atmosfera terrestre, generando nuevas partículas de menor energía. Es posible detectar estas partículas de acuerdo a la interacción en un medio, como ionización de un material y radiación Cerenkov. En el Laboratorio de Partículas Elem ... More
Presented by Mr. Francisco Javier ROSAS
La determinación de la luminosidad en el experimento ALICE se realiza a través de la medición de la sección eficaz visible obtenida a partir del método de van der Meer. En 2015 el LHC realizo corridas de calibración para colisiones de proton-proton con una energía de centro de masa de 5 y 13 TeV. Se realizaron dos van der Meer donde la sección eficaz fue medida para dos clases de interacci ... More
La cromodinámica cuántica (QCD) es una teoría cuántica de campos desarrollada para explicar la interacción nuclear fuerte. Esta teoría ha sido verificada en una gran cantidad de experimentos y está de acuerdo con la evidencia obtenida de los aceleradores de partículas. Sin embargo, QCD también debería ser capaz de dar la termodinámica de la materia, en especial, en condiciones no resuel ... More
Presented by Mr. Miguel Ángel NAVA BLANCO
Presented by Mr. Azarael YEBRA on 26 May 2017 at 12:00
Previously it has been established that if the incident neutrino polarization is different from minus one, then, it is possible to have measurable differences between Dirac and Majorana neutrino-electron scattering processes. This difference can even be used to establish a new upper bound for the neutrino magnetic moment. Here we show that by introducing New Physics (NP) that violates CP it is pos ... More
Presented by Mr. Azarael YEBRA
La trayectoria una partícula puede ser medidad si se conocen varios puntos por los que ha pasado. Esto se aplica para cualquier tipo de partícula, incluyendo los rayos cósmicos. Hemos diseñado y construido un dispositivo para tales fines. Este trabajo presenta el diseño, la construcción y la caracterización de un sistema generador de campo magnético uniforme en un volumen finito. Adentro ... More
Presented by Ms. Karla HERRERA, Mr. Raúl Alejandro GUTIÉRREZ SÁNCHEZ
Los rayos cósmicos, partículas procedentes del espacio exterior a la Tierra, es radiación incidente aún en estudio de sus propiedades. Los rayos cósmicos pueden ser aplicados a nuevas tecnologías en la ciencia, por ejemplo, espectroscopia y escaneo de materiales. Se construyó un detector de rayos cósmicos de tres canales utilizando tres foto-multiplicadores, dos plásticos centelladores y ... More
Presented by Mr. Oscar MORENO PALACIOS
Electromagnetic and mechanical studies has been performed with the aim of build a RF cavity in the S-Band (2998 MHz), the design takes into consideration the relativistic change in the electron velocity through the acceleration cavity. Four cavity cases were considered at different input energies, 50 KeV, 100 KeV, 150 KeV and 200 Kev, with output energies from 350 KeV to 5 MeV, the designs show go ... More
Presented by Mr. Gaspar Ricardo MONTOYA SOTO
Se presenta un estudio de la observable de fluctuaciones de evento por evento del momento transverso promedio en las colisiones protón- protón (pp) en función de la multiplicidad promedio a las energías del Gran Colisionador de Hadrones. El estudio se realizó en el marco del modelo de QCD no perturbativa del modelo de percolación de cuerdas de color, como una propuesta para explicar el orig ... More
Presented by Mr. Pablo FIERRO ROJAS
Presented by Dr. María MORALES MACÍAS on 24 May 2017 at 16:30
In this talk the Feynman's path integral is discussed and some of its difficulties, which try to save using the integral of Henstock.
Presented by Dr. María MORALES MACÍAS
On April 28th 2016 the TUS (Tracking Ultraviolet Setup) was launched on board of the M. Lomonosov Satellite. We present brifly the main scientific goals of the mission, the capabilities of this orbital telescope and some of the events recorded by it, including extreme energy cosmic rays (EECR) and Transient Luminous Events (TLE's).
Presented by Dr. oscar MARTINEZ
Presented by Dr. Lorenzo DIAZ-CRUZ on 25 May 2017 at 16:00
Flavor physics, flavons effects, a 100 tev factory
Presented by Prof. Lorenzo DIAZ-CRUZ
Presented by Dr. Martin HENTSCHINSKI on 24 May 2017 at 11:45
We revisit the global QCD analysis of parton-to-kaon fragmentation functions at next-to-leading order accuracy using the latest experimental information on single-inclusive kaon production in electron-positron annihilation, lepton-nucleon deep-inelastic scattering, and proton-proton collisions. An excellent description of all data sets is achieved, and the remaining uncertainties in parton-to- kao ... More
Presented by Roger José HERNÁNDEZ-PINTO
Presented by Ms. SINDY CHAMORRO SOLANO on 25 May 2017 at 17:30
We study the phenomenology of the light h and heavy H Higgs boson production and decay in the context of a U(1)B-L extension of the standard model with an additional Z´ boson at future e+e- linear colliders with center-of-mass energies of √𝑠 = 500 – 3000 GeV and integrated luminosities of £ = 500 − 2000 fb-1. The study includes the processes e+e- → (Z, Z´) → Zh and e+e- → (Z, Z ... More
Presented by Mr. Francisco RAMIREZ-SANCHEZ
REDTOP is a novel experiment being proposed at the Proton Booster of Fermilab with the intent of producing more than $10^{12}$ η mesons per year in order to detect possible rare η decays which can be a clear evidence of the existence of Physics Beyond the Standard Model. Such statistics are sufficient for investigating several discrete symmetry violations, new particles and interactions and prec ... More
Presented by Ms. Sofia ESCOBAR, Ms. Brenda FABELA
Presented by Dr. Alexander James STUART on 25 May 2017 at 09:30
The discovery that flavour mixing can occur in the neutrino sector proves that neutrinos have mass. Both the concept of massive neutrinos, and by extension the mechanisms which generate neutrino mass, are not predicted or explained by the SM. This tells us that the lepton sector is not fully understood. There are many NP models which introduce mechanisms to give neutrinos mass. These include ... More
Presented by Mr. David RODRÍGUEZ PÉREZ
Presented by Dr. Sujoy MODAK on 24 May 2017 at 15:15
Presented by Dr. Mario RODRÍGUEZ CAHUANTZI on 25 May 2017 at 10:00
En la actualidad se está construyendo el complejo de aceleradores NICA (Nuclotron-based Ion Collider fAcility) en las instalaciones del laboratorio JINR (Joint Institute for Nuclear Research) en la ciudad de Dubna, Rusia. Con el objetivo general de estudiar las propiedades de la materia nuclear en una region con alta densidad bariónica, en este complejo se instalarán 3 detectores: BM@N (Baryoni ... More
Presented by Mario RODRÍGUEZ CAHUANTZI
Presented by Mr. Rogelio REYES ALMANZA on 26 May 2017 at 10:30
Presented by Mr. Heber ZEPEDA on 24 May 2017 at 17:15
We show the measurement of the production cross section of J/psi in of pp collisions at s = 13 TeV is presented. The measurement is performed using 2.7 fb^-1 of data collected by the CMS experiment at the LHC in the year 2015, detecting the decay J/\psi-> mu+ mu-. We present the results in terms of differential cross sections in several rapidity and transverse momentum ranges.
Presented by Mr. Heber ZEPEDA
Presented by Dr. Jorge MARTÍNEZ ORTEGA on 24 May 2017 at 10:15
Los cocientes $R(D) = B(B \to D \tau \nu) / B(B \to D \mu \nu))$ y $R(D^*) = B(B \to D^* \tau \nu_{\tau}) / B(B \to D^* \mu \nu_{\mu}))$, medidos por los experimentos BaBar, Belle y LHCb, presentan una desviación de más de $2\sigma$ con respecto a la predicción del Modelo Estándar, que de confirmarse podría convertirse en evidencia de la existencia de Nueva Física más allá del Modelo Está ... More
Presented by Mr. Jorge MARTINEZ ORTEGA
Presented by Mr. Bryan LARIOS on 24 May 2017 at 16:00
In this talk, I will briefly review the helicity formalism as a new and powerful method to compute scattering amplitudes. Using the so-called recursion relations, namely BCFW and KLT it is possible to compute processes with multiple particles in the final state in a very simple way. I will show in a pure Yang-Mills theory how these modern techniques work.
Presented by Mr. Bryan LARIOS
Presented by Prof. Gerardo HERRERA CORRAL on 26 May 2017 at 09:00
Presented by Dr. Agustin MOYOTL-ACUAHUITL on 25 May 2017 at 15:30
La violación de la simetría CP es un fenómeno muy raro en la naturaleza y su existencia es indispensable para explicar la bariogénesis, el cual a su vez permite explicar el fenómeno de asimetría de materia y antimateria (AMA) del universo. Actualmente se cuenta con contundentes pruebas experimentales de este fenómeno, pero no son suficientes para explicar el fenómeno de gran escala de la A ... More
Presented by Dr. Agustin MOYOTL-ACUAHUITL
Presented by Dr. Eric VAZQUEZ-JAUREGUI on 25 May 2017 at 11:45
En esta charla se presenta una acercamiento propuesto por colegas mexicanos, recientemente, para resolver el problema de CP fuerte. La idea se origina en separar y demostrar que la fuente de violación de CP fuerte es independiente de la de CP débil. Por otra parte, también se demuestra que, dentro del marco teórico del Modelo Estándar, es posible calcular el valor del invariante de Jarlskog c ... More
Presented by Dr. Ulises Jesús SALDAÑA SALAZAR
There are many general purpose cosmic ray detectors based on plastic scintillators and electronic boards from the market. This is a new cosmic ray detector designed on three 2.54 cm X 5.08 cm X 20.32 cm Aluminum blocks in stack arrangement, and thee Hamamatsu S12572-100P photodiodes. The photodiode board, the passive electronic board, and the discriminator board are own designed. The electronic si ... More
Presented by Mr. Luis ARCEO
Presented by Mr. Jan EYSERMANS on 24 May 2017 at 17:30
The Resitive Plate Chambers (RPC) at the Compact Muon Solenoid (CMS) experiment at the CERN Large Hadron Collider (LHC) provide redundancy to the Drift Tubes (DT) in the barrel and Cathode Strip Chambers (CSC) in the endcap regions. Consisting of 1056 double gap RPC chambers, the main detector parameters and environmental conditions are carefully monitored during the data taking period. At a cente ... More
Presented by Jan EYSERMANS
Presented by Mr. Marco Alan VALDIVIA GARCÍA on 25 May 2017 at 18:00
Direct s-channel Higgs production in e+e− collisions is of interest if the centre- of-mass energy spread can be reduced to be comparable to the width of the standard model Higgs boson. A monochromatization principle, previously proposed for several earlier lower-energy colliders, could be employed in order to achieve the desired reduction, by introducing a nonzero horizontal disper- sion of oppo ... More
Presented by Mr. Marco Alan VALDIVIA GARCÍA
Presented by Mr. Raul Iraq RABADAN TREJO on 26 May 2017 at 10:45
Recently there has been a revival of interest in searches for pentaquark states triggered by the experimental evidence for hidden-charm pentaquark states provided by LHCb. The LHCb collaboration reported the observation of two pentaquark-like resonances $P_{c}(4380)$ and $P_{c}(4450)$ with the decay mode $J/\psi p$ in the process $\Lambda_{b}->J/\psi K^{-}p$ using an amplitude analysis of the ther ... More
Presented by Mr. Raul Iraq RABADAN TREJO
Presented by Mr. Juan Carlos CABANILLAS on 26 May 2017 at 10:00
The AD (ALICE Diffractive) detector in the ALICE Experiment for Run 2 of the LHC is the trigger detector for diffractive physics events in p-p collisions. It can also be used as a centrality trigger in Pb-Pb and p-Pb collisions. This detector consists of two sub-detectors: ADA and ADC, installed on the A and C sides of the ALICE experimental site, respectively. Each sub-detector consists of 8 scin ... More
Presented by Mr. Juan Carlos CABANILLAS
Presented by Dr. Javier COBOS-MARTINEZ on 24 May 2017 at 12:30
In a Poincare'-covariant vector-boson-exchange theory, the pion possesses components of pseudovector origin, which materially influence its observable properties. For a range of such quantities, we explore the consequences of a momentum-independent interaction, regularised in a symmetry-preserving manner. The contact interaction, whilst capable of describing pion static properties, produces a form ... More
Presented by Dr. LAURA XIOMARA GUTIERREZ
Presented by Dr. Laura Xiomara GUTIERREZ GUERRERO
El experimento CONNIE (COherent Neutrino-Nucleus Interaction Experiment) tiene como objetivo observar por primera vez la dispersión elástica coherente neutrino-núcleo (DECNN). Esto se pretende lograr midiendo los retrocesos nucleares de baja energía de átomos de silicio, producidos por neutrinos del reactor nuclear Angra-II de la central nuclear Almirante Álvaro Alberto, en Angra Dos Reis, B ... More
Presented by Marisol CHÁVEZ ESTRADA
En compactificaciones de teorías de supercuerdas, es importante conocer los elementos de la teoría efectiva a bajas energías para así poder estudiar las consecuencias para la cosmología y la física de partículas de éstas. En este trabajo estudiamos los potenciales de Kähler para los módulos geométricos que aparecen al compactificar en orbifolios toroidales las teorías de cuerdas heter ... More
Presented by Ms. Yessenia OLGUÍN TREJO
This is a poster
Presented by Dr. Javier-Andres ORDUZ-DUCUARA
Presented by Dr. Jhovanny MEJIA on 24 May 2017 at 10:45
The fragmentation process, in which a primary b quark forms $b\bar{q}$ meson, can not be reliably predicted because it is driven by strong dynamics in the nonperturbative regime. Thus fragmentation functions for the various hadron species must be determined experimentally. The production rate of $B_s$ and $B^+$ mesons is a product of the $b\bar{b}$ cross section, the instantaneous luminosity and t ... More
Presented by Jhovanny MEJIA
Presented by Ms. Norma RAMÍREZ URIBE on 24 May 2017 at 16:15
The Loop-Tree duality theorem establish that loop contributions to scattering amplitudes can be computed through dual integrals, wich are build from single cuts of the virtual diagrams. In order to build a complete loop-tree duality representation of the cross section, it is crucial to include the renormalised self-energy corrections for wich it is necessary to calculate the QCD renormalization co ... More
Presented by Norma Selomit RAMÍREZ URIBE
En el experimento CMS, los fotones tienen cierta probabilidad de convertirse en pares e+e- al atravesar el material del *tracker* de silicio. En esta charla se describe el proceso para identificar esta conversión y se presentan resultados preliminares obtenidos con los datos a 13 TeV en CMS del año 2015.
Presented by Mr. Daniel Alejandro PÉREZ NAVARRO
Presented by Mr. Daniel Alejandro PÉREZ NAVARRO on 24 May 2017 at 18:30
Presented by Luis Albino FERNÁNDEZ RANGEL
The infrared enhancement of the constituent quark mass can be studied through the quark propagator using Schwinger-Dyson equations (SDEs). In this formalism, the mass function obtains a value of about 300-500 MeV in the infrared regime, whereas its perturbative limit is well reproduced in the ultraviolet domain. Lattice studies have provided confirmation of this non-perturbative phenomenon. T ... More
Presented by Ms. Rocio BERMUDEZ
In this work (based on a recent published paper), we propose a tool to reveal the origin of the collective-like phenomena observed in proton–proton collisions. We exploit the fundamental difference between the underlying mechanisms, color reconnection and hydrodynamics, which produce radial flow patterns in Pythia 8 and Epos 3, respectively. Specifically, we proceed by examining the strength of ... More
Presented by Mr. Héctor BELLO
El experimento SNO+ mediante el uso de un detector con líquido centellador y agua ultra pura estudiará una amplia variedad de temas de interés actual en la física de neutrinos. En este trabajo se discute principalmente el efecto de ruido ocasionado por neutrones, los cuales se generan en varios procesos nucleares en los componentes del detector y en la región de interés. Aunque el experiment ... More
Presented by Mr. José Luis HERNÁNDEZ
En el laboratorio subterráneo SNOLAB en Canadá, se encuentra el experimento de búsqueda de materia oscura PICO60. Consiste de una cámara de burbujas con C3F8 en su interior en estado de líquido sobrecalentado. Adicionalmente, cuenta con detectores piezoeléctricos para escuchar las burbujas. Mediante la observación con una cámara de alta fidelidad y la transducción de sonido producido por ... More
Presented by Mr. Noel Alberto CRUZ VENEGAS
The simplest scalar representations under SU(2)_L symmetry are considered to extend the scalar sector of the Standard Model. The main motivation is included a dark matter candidate, which could arise from the additional scalar fields. We also include an additional U(1) symmetry in order to control the stability of the dark matter candidate.
Presented by Dr. Jose Halim MONTES DE OCA YEMHA
Presented by Mr. Mateo RAMIREZ GARCIA on 24 May 2017 at 18:00
Search of Inert Dark Matter in HAWC
Presented by Mr. Concepción ARELLANO CELIZ
In this work the sensitivity study of the decay channels $\tau \to \eta \pi \nu$ and $\tau \to \eta \pi \pi^{0} \nu$ at the Belle II experiment are presented. Measurements of the branching ratio and $\eta\pi$ invariant mass for each channel would disentangle models. Furthermore, the decay $\tau \to \eta \pi \nu$ is relevant because its observation could be a signal of Second Class Currents and, du ... More
Presented by Mr. Michel HERNÁNDEZ VILLANUEVA
Presented by Mr. Michel HERNÁNDEZ VILLANUEVA on 24 May 2017 at 11:00
A beam position monitor is a devise used in particle accelerators which function is to determinate the position of the beam. In this work, the results obtained by computational simulation and the characterization of a stripline beam position monitor using a single electrode under the action of an electric potential are shown. The electric potential is generated along a copper cable, concentrically ... More
Presented by Mr. PEREZ FERMIN
Following the same Dyson-Schwinger/Bethe-Salpeter equations approach for the computation of pi_0, eta_c and eta_b to gamma-gamma* transition form factors (Phys.Rev. D93 (2016) no.7, 074017, Phys.Rev. D95 (2017) no.7, 074014), which connects such form factors with their corresponding valence-quark parton distribution amplitudes, we present progress towards the computation of eta and eta' gamma-gamm ... More
Presented by Khépani RAYA
Presented by Mr. Khépani RAYA on 24 May 2017 at 12:15
En este trabajo se explora un nuevo esquema iterativo que nos permite obtener la solución de la ecuación de gap en el modelo de Nambu-Jona-Lasinio. Mostramos, además, que el método desarrollado se puede aplicar en una gama de esquemas de regularización del modelo usuales en la literatura, y finalmente comparamos las soluciones obtenidas con métodos tradicionales.
Presented by Mr. Angelo MARTÍNEZ
Presented by Mr. Angelo MARTÍNEZ on 24 May 2017 at 12:45
Presented by Ms. Fernanda PSIHAS on 26 May 2017 at 11:30
The Mexican Particle Accelerator Community (CMAP) has endeavored the development of a 10 MeV electron Linac. The Linac, at present under design, will make use of “x” normal conducting quadrupole magnets. The quadrupoles follow a standard type geometry and they will operate using Cu conductor at room temperature. This works reports the progress on the overall quadrupole design, i.e. analytic ... More
Presented by Dr. Humberto MAURY CUNA
STUDIES ON MASS SENSITIVE PARAMETERS AND MONITORING OF THE OPERATION OF THE SURFACE DETECTOR WITH DATA OF THE PIERRE AUGER OBSERVATORY Karen Salomé Caballero Mora Facultad de Ciencias en Física y Matemáticas Universidad Autónoma de Chiapas The Pierre Auger experiment, located in Argentina, has a surface of 3000 Km2, it is designed to measure cosmic rays with energies from 1017.5 e ... More
Presented by Ms. Karen Salomé CABALLERO MORA
A new proposal to study the primary radiation mass composition at low energies for atmospheric extended showers (EAS). A prototype of these detectors are called Trasgos (Track and time reconStructinG bOx), there consist on several stacked tRPC (timing Resistive Plate Chambers). The Trasgos has advantages as high temporal resolution (~100 ps), high granularity and they are also capable of tracking. ... More
Presented by Ms. Alejandra PARRA
The ratio μ+/μ- is defined as the ratio of the number of positively charged muons to the number of negatively charged muons that reach the surface of the Earth. Since most of the primary cosmic rays and the nuclei with which they interact have a positive charge, the production of mesons with this charge is favored, for this reason, it is expected that the number of positively charged muons will ... More
Presented by Ms. Emma GONZALEZ HERNANDEZ
The RPC system at the CMS Detector is operating successfully from beginning of the data taking. The high instantaneous luminosity causes an extremely high flux of ionizing particles. The long period of operation (Run1 and Run2) in a huge radiation background conditions, gives the opportunity to study the operation capability of the RPCs and also to predict a data-driven extrapolation about the exp ... More
Presented by Mr. Osvaldo MIGUEL COLÍN
Presented by Mr. Roberto PADRON STEVENS on 26 May 2017 at 12:15
By considering that the weak currents and the electromagnetic current are members of the same SU(3) octet, two sum rules involving leading vector form factors in hyperon semileptonic decays are derived in the limit of exact flavor SU(3) symmetry. Deviations from this limit arise from second-order SU(3) symmetry breaking effects, according to the Ademollo-Gatto theorem. The 1/Nc expansion of QCD ... More
Presented by Mr. Roberto PADRÓN STEVENS
Observation of $\tau^-\to\eta^{(\prime)}\pi^-\nu_\tau $ decays at Belle-II would indicate either a manifestation of isospin symmetry breaking or genuine second class currents (SCC) effects. The corresponding radiative $\tau^-\to\eta^{(\prime)}\pi^-\nu_\tau \gamma$ decay channels are not suppressed by $G$-parity considerations and may represent a serious background in searches of SCC in the form ... More
Presented by Mr. Adolfo GUEVARA
Presented by Dr. Lizardo VALENCIA PALOMO on 26 May 2017 at 09:30
Quantum Chromodynamics (QCD) predicts that at high energy densities, ordinary nuclear matter undergoes a phase transition towards a new state of matter called Quark-Gluon Plasma (QGP) that is characterized by deconfined quarks and gluons. High-energy heavy ion (A-A) collisions are used to reach the thermodynamical conditions to recreate the QGP. Proton and heavy ion collisions (p-A) are useful to ... More
Presented by Dr. Lizardo VALENCIA PALOMO
Presented by Dr. Juan Carlos DEGOLLADO on 25 May 2017 at 15:00
Presented by Mr. Ilya Orson SANDOVAL CÁRDENAS on 26 May 2017 at 10:15
We study the impact of the Gradient Flow on the topology in various models. The topological susceptibility is measured directly, and by the "slab method", which is based on the topological content of sub-volumes ("slabs"). The results obtained by both methods are consistent, but the impact of the Gradient Flow on the characteristic quantity of the slab method is different in 2-flavor QCD and in th ... More
Presented by Mr. Ilya Orson SANDOVAL CÁRDENAS
Se estudia la dispersión de Compton por medio de técnicas de helicidad, también se obtiene la sección de dispersión utilizando las técnicas espinoriales desarrolladas por el grupo CALKUL. Se muestra la equivalencia entre ambos métodos de cálculo y se hace una conexión con los métodos tradicionales para el cálculo de trazas a partir de la amplitud así como del módulo cuadrado de ella.
Presented by Mr. Edgar SANCHEZ
Los modelos basados en compactificaciones de la teoría de cuerdas están dotados de muchas simetrías, entre las que aparecen grupos discretos no abelianos que pueden ser interpretados como simetrías de sabor. Delta(54) es el subgrupo discreto de SU(3) más grande que permitiría explicar el número de generaciones en el modelo estándar de partículas debido a la multiplicidad de sus representa ... More
Presented by Dr. Saul RAMOS-SANCHEZ
Presented by David Arturo AMOR QUIROZ on 26 May 2017 at 12:45
We evaluate the use of harmonic oscillator functions (Laguerre polynomials) in the expansion of the fermionic fields of an effective theory inspired by the formalism of QCD in its Hamiltonian formulation in the Coulomb Gauge. Since the functions involved in such expansion are non-relativistic, the Talmi-Moshinsky transformations are used to recover the translational invariance of the center of mas ... More
Presented by David Arturo AMOR QUIROZ
Presented by Dr. Gerardo HERNÁNDEZ-TOMÉ on 25 May 2017 at 16:30
Models with an extended scalar sector predict new neutral, singly, and doubly charged scalar bosons. General renormalizable scalar couplings are considered and the contributions of these hypothetical particles to the anomalous weak magnetic dipole moment (AWMDM) and weak electric dipole moment (WEDM) of a charged lepton are calculated in a model independent way. A numerical estimate is presented f ... More
Presented by Dr. Gerardo HERNÁNDEZ-TOMÉ
Presented by Mr. Rodolfo FERRO on 25 May 2017 at 10:15
The weak mixing angle at low energies in the $\overline{\text{MS}}$ renormalization scheme including higher orders in the perturbative expansion and updated input data is presented.
Presented by Mr. Rodolfo FERRO
We present a measurement of the $\Lambda_{b}$ polarization based on an angular analysis of the decay $\Lambda_b \rightarrow J/\psi \Lambda$, using data from pp collisions at $\sqrt{s}=7$ TeV and 8 TeV collected with the CMS detector. A transverse Λb polarization of 0.00 ±0.06(stat) ±0.02(syst). Our result for $\alpha_{1}$ , the asymmetry parameter, is compatible with predictions that lie in the ... More
Presented by Mr. Rogelio REYES ALMANZA
The mass and decay width of the $\phi$ meson in cold nuclear matter are computed in an effective Lagrangian approach. The medium dependence of these properties are obtained by evaluating kaon-antikaon loop contributions to the $\phi$ self-energy, employing the medium-modified kaon masses, calculated using the quark-meson coupling model. The loop integral is regularized with a dipole form factor, a ... More
Presented by Dr. Javier COBOS-MARTINEZ