Event calendar file
17-19 June 2026
Mexico/General timezone
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Contribution List
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109
Here we will present the recent cosmological results from our DESI experiment (desi.lbl.gov), which has mapped more than 47 millions of galaxies and quasars.
This precise 3-dimensional out the "cosmological constant" at more than 95% confidence level implying that Dark Energy evolves in time. This result modifies the well established cosmological model "LambdaCDM" Cosmological constant + Dark Ma
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Presented by Dr. Axel DE LA MACORRA
We study the flavour-changing-neutral-current decay $K^+\to\pi^+Z_d$ with a dark $Z_d$ in the context of a $U(1)_d$ dark two-Higgs-doublet model with a complex dark singlet. In this model, the second Higgs doublet is charged under $U(1)_d$, while Standard Model fermions are neutral. The dark gauge boson acquires mass through the spontaneous breaking of $U(1)_d$ and couples to the Standard Model vi
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Presented by Mr. Javier MOLINA ARIZA
The Unruh effect predicts that a uniformly accelerated observer perceives a change in their vacuum state [1]. This phenomenon is a direct result of quantum field theory and relativity. Although direct experimental confirmation is still pending, interesting proposals already exist [2]. Currently, there is debate about the physical origin of the effect [3], particularly regarding whether it should b
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Presented by Mr. Miguel Ángel ESTÉVEZ JUÁREZ
This work presents an analysis proposal for a search for a heavy scalar particle produced in proton-proton elastic collisions at 13 TeV via a Central Exclusive Process (CEP), tagged with the Proton Precision Spectrometer (PPS) and associated with a boson detected in the central region of the Compact Muon Solenoid (CMS) detector. The proposed analysis is done by evaluating the proton mass spectrum
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Presented by Mr. Pablo POMARES VALDÉS
Projection operators for irreducible representations of $SU(N)$ have
been constructed, and a method to decompose any tensor operator
that transforms under this group is described. Some applications of the
method have been developed, focusing on Chiral Perturbation Theory
and the $1/N_c$ expansion; different baryon properties and processes are
described.
Presented by Mr. Johann HERNÁNDEZ
The Worm Algorithm is a versatile Path Integral Monte Carlo method which circumvents some of the near-critical limitations present in local update algorithms, such as Metropolis. It achieves this by sampling an extended configuration space called the Z-Sector, which contains the unphysical open worldlines corresponding to off-diagonal elements in the density matrix.
In this work, the worm a
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Presented by Mr. Omahr GARCIAPINA
Presented by Dr. Axel DE LA MACORRA
on
18 Jun 2026
at
12:25
The BaBar anomalous measurement of the CPV asymmetry in tau to K_S pi nu decays has recently been challenged by Belle-II. The Belle-II result accords with expectations from heavy new physics, derived model-independently within an EFT framework. We highlight that CPV measurements in the partner tau to K_S K nu decays can help to finally settle this puzzle.
Presented by Mr. Daniel Arturo LÓPEZ AGUILAR
Presented by Laura DUQUE HERRERA
on
17 Jun 2026
at
16:30
We perform a phenomenological study of neutrino interactions using data form the measurement coherent elastic neutrino-nucleus scattering (CE$\nu$NS) by the COHERENT experiment with a germanium detector. We use data sets from two independent experimental measurements, with the second run reaching a threshold of 0.5 keV$_{ee}$ and almost tripling the statistics with respect to the first one. We use
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Presented by Laura DUQUE HERRERA
The design, characterization, and deployment of the Cosmic Ray Cube (CRC) muon detector at the Institute of Physics at UNAM are presented in this work. This detector was designed by the Gran Sasso National Laboratory in collaboration with the Dark Matter and Neutrino Laboratory at IFUNAM.
The CRC detector is based on plastic scintillators and silicon photomultipliers in a 4-layer array capable of
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Presented by Mr. Francisco Jose SANTIAGO-MARTINEZ
This mechanism aims to provide a solution to the hierarchy problem. To this end, it is based on a model with classical conformal invariance and a global custodial $SO(6)$ symmetry imposed at high energies. Quantum corrections break the conformal symmetry through the Coleman–Weinberg mechanism, dynamically generating a new scale and inducing vacuum expectation values for the scalar fields. The sp
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Presented by Mr. Juan JIMENEZ ROMAN
Dark matter is expected to constitute a large fraction of the universe and may interact with terrestrial detectors through a variety of channels. The PICO collaboration leverages bubble chamber technology to search for these interactions, operating its detectors 2 km underground at SNOLAB to suppress cosmogenic backgrounds. Bubble chamber detectors offer two key advantages: insensitivity to gamma-
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Presented by Rajan ANDERSON DORNAN
Presented by Rajan ANDERSON DORNAN
on
17 Jun 2026
at
15:20
This thesis studies thermal dark matter production in a hidden vector sector where stable massive vector bosons emerge as dark matter candidates. Using Boltzmann equations and numerical simulations, the project analyzes relic density, freeze-out dynamics, and viable parameter space while comparing theoretical predictions with cosmological and direct detection constraints.
Presented by Mr. Oscar CARRANZA JIMENEZ
Piritakua (lightning in Purepecha) is an experiment at the Physics Institute of the National Autonomous University of Mexico. The goal of this experiment is to investigate the effects of atmospheric changes on cosmic-ray secondaries, such as pressure, temperature, or the presence of a storm. In this work, we present the first results on Piritakua's ability to track thunderstorms over variations in
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Presented by Dr. Antonio GALVÁN
Charged current (CC) electron neutrino interactions on $^{40}$Ar at tens of MeV energies produce excited $^{40}$K nuclei that de-excite through gamma ray cascades and particle emission. These de-excitation products contribute to the visible energy and timing structure of events in liquid argon neutrino detectors. This is especially relevant for the Coherent CAPTAIN Mills (CCM) experiment, a 10 ton
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Presented by Ms. Marisol CHAVEZ ESTRADA
Presented by Chávez Estrada MARISOL
on
17 Jun 2026
at
17:50
Presented by Dr. Castañeda ALFREDO
on
17 Jun 2026
at
12:05
This work presents the development of a computational environment for the training and application of neural network models using data from the CMS experiment at CERN. The framework is designed to support advanced machine learning techniques for data analysis in experimental particle physics, with a focus on anomaly detection.
The proposed workflow integrates efficient data processing and selec
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Presented by Dr. Alfredo CASTAÑEDA
One of the most important discoveries at the LHC is the presence of effects associated with quark–gluon plasma (QGP) formation in proton–proton (pp) collisions. The origin of these observations remains unknown. Since event selection in many studies relies on multiplicity-based estimators known to introduce selection biases, alternative approaches must be explored to elucidate the origin of the
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Presented by Jesus Eduardo MUÑOZ MENDEZ
The worldline formalism offers an alternative framework to the standard diagrammatic approach in quantum field theory, based on first-quantized relativistic path integrals. Over recent decades, this formalism has attracted growing interest due to its potential applications and computational advantages. As a result, a collection of worldline master integrals has been derived within this approach. H
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Presented by Dr. Victor Miguel BANDA GUZMAN
We report our exploratory study of the tension between the T2K and NOVA CP violating asymmetry (between electron neutrino and antineutrino appearance events) when interpreted within normal ordering for the neutrino masses, as preferred by the global fits to oscillation data. The traditional interpretation in terms of possible non-standard neutrino interactions is challenged within the effective fi
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Presented by Ms. Gabriela Natalia GAXIOLA MILLAN
We explore the sensitivity of the $e^{+} e^{-} \to K^+ K^- 2 \pi^0$ cross section to the magnetic dipole moment (MDM) of the $K^*$ vector meson. We describe the $\gamma^* \to 2K2\pi$ vertex using a vector meson dominance model, including the intermediate resonant contributions relevant for energies below 2.4 GeV. Using BaBar data for this process, we show that this observable is indeed sensitive t
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Presented by Mr. Luis Alberto JIMÉNEZ PÉREZ
*Piritakua* (relámpago en Purépecha) es un detector de rayos cósmicos ubicado en el Instituto de Física de la UNAM. Su objetivo es utilizar perturbaciones transitorias de la atmósfera (en presión, temperatura y campos electromagnéticos) para estudiar la producción y propagación de partículas secundarias en esta. El experimento consiste de un arreglo de detectores de centelleo, detectores
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Presented by Dr. Hermes LEÓN VARGAS
Presented by Dr. Hermes LEÓN VARGAS
on
17 Jun 2026
at
12:45
The ALICE collaboration has measured the production of $K^{0}_{S}$ and $\Xi^{\pm}$ in \textit{pp} collisions at $\sqrt{s}=13$TeV in the direction of the leading charged particle and in the direction transverse to it. The $\Xi^{\pm}$ yield normalized to the $K^{0}_{S}$ yield is found to increase with the charged particle multiplicity for both the transverse-to-leading and the toward-leading (jet-li
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Presented by Victor VÁZQUEZ CAMPOS
Using a statistical model, we analyze published multiplicity distributions for identified hadrons
produced in heavy ion collisions in the energy range from 2.7-200 GeV. Our analysis enables the prediction
of the multiplicity distributions for multi-strangeness hadrons that have not yet been measured in lowerenergy experiments. Furthermore, we obtain freeze-out parameters, including temperature,
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Presented by Jose Francisco REYES RODTIGUEZ
Presented by Mr. Mauricio SÁNCHEZ RAMÍREZ
on
17 Jun 2026
at
15:40
En este trabajo se presenta el estudio de la respuesta de un Dispositivo de Carga Acoplada (CCD) de tipo Skipper ante el flujo
de muones atmosféricos en las inmediaciones del Instituto de Ciencias Nucleares, UNAM. La investigación abarca tanto una
caracterización experimental en el laboratorio como el desarrollo de dos simulaciones de Monte Carlo basadas en la
parametrización de Smith-Dulle
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Presented by Mrs. Mauricio SÁNCHEZ RAMÍREZ
El bosón de Higgs, descubierto en 2012 por los experimentos ATLAS y CMS del CERN completó el espectro de partículas predicho por el Modelo Estándar (SM). Sin embargo, la naturaleza del campo de Higgs y sus interacciones con los bosones gauge \textcolor{black}{de norma} electro-débiles (W, Z, $\gamma$) aún no se conocen con la precisión necesaria para confirmar completamente las predicciones
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Presented by Mr. Juan Antonio CARPINTERO HERNANDEZ
Spallation neutron source facilities offer a powerful, low-background environment to search for new physics in the neutrino sector. In this work, we investigate the phenomenology of coherent elastic neutrino-nucleus scattering (CEvNS) using neutrinos produced from pion and muon decay-at-rest. By analyzing current data from the COHERENT experiment, we place stringent constraints on non-standard neu
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Presented by Gonzalo SANCHEZ
Presented by Gonzalo SANCHEZ
on
17 Jun 2026
at
16:50
Presented by Dr. Saul RAMOS-SANCHEZ
on
17 Jun 2026
at
09:45
The rare decay $B^0_s\rightarrow \mu^+ \mu^-$ provides a powerful probe of physics beyond the Standard Model due to its strong suppression and sensitivity to flavor-changing neutral current interactions. In this work, we analyze this process in a CP-violating Two-Higgs-Doublet Model with a general Yukawa structure. The most general scalar potential is considered, leading to mixing among the neutra
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Presented by Mr. Oscar TENIENTE ORNELAS
We study radiative leptonic decay within a model-independent EFT framework. Starting from the most general four-lepton effective Hamiltonian, written in terms of scalar, vector and tensor Lorentz structures, we review how the usual Michel formalism provides a convenient way to describe possible deviations from the Standard Model interaction. Motivated by the existence of neutrino masses and mixing
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Presented by Mr. Luis Alfredo CLEMENTE MARTÍNEZ
The study of hadronic matter at high temperatures and baryon densities plays a central role in exploring the QCD phase diagram and the possible existence of a critical point. Generalized susceptibilities, which are related to cumulants experimentally accessible in heavy-ion collisions, are particularly sensitive observables and therefore valuable tools in this search. In this work, the hadron reso
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Presented by Rodrigo GARCÍA FORMENTÍ MENDIETA
Presented by Rodrigo GARCÍA FORMENTÍ MENDIETA, Dr. Eleazar CUAUTLE
on
18 Jun 2026
at
12:05
We present a field-theoretical description of quarkyonic matter in which quark–nucleon duality is implemented through ghost fields that compensate the extra nucleonic degrees of freedom. The framework reduces to a nucleon effective field theory at low density and describes the dynamical formation of a nucleon shell near the Fermi surface as baryon density increases. A phenomenological equation o
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Presented by Dr. Saul HERNANDEZ ORTIZ
Presented by Dr. Norma Selomit RAMÍREZ URIBE, Dr. Norma Selomit RAMÍREZ URIBE
on
18 Jun 2026
at
11:20
In this work, we improve the numerical estimate of the $\omega$-channel of the $\tau^- \to \pi^-\pi^0\nu_\tau\gamma$ process, the leading model dependent contribution in the VMD approach, by incorporating the correlation among the parameters involved in the $\omega \pi$ form factor. We profit from experimental information on the $\omega\pi$ spectral function, measured in the decay $\tau^- \to \pi^
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Presented by Mr. Leonardo ESPARZA
The standard type-I seesaw can also be regarded as a low-scale seesaw by using the freedom of
the Casas-Ibarra parameterization. In this framework, radiative corrections to the neutrino mass
matrix can dominate over the tree-level contribution. We show that a naive use of the Casas-
Ibarra parametrization in the presence of 1-loop corrections leads to incorrect predictions for the
neutrino osc
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Presented by Ms. Kainat QAMAR
Presented by Ms. Kainat QAMAR
on
17 Jun 2026
at
15:00
El presente proyecto se presentan los avances en la construcción e instalación de los módulos de detección de centelleo instalados en el Instituto de Física de la UNAM para el experimento Piritakua. El experimento está formado por 15 detectores de centelleo, basados en el diseño del Cosmic Watch del MIT, una estación meteorológica, un medidor de campo eléctrico y un medidor de campo magn
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Presented by Mrs. Maira Gloria PEREZ VIELMA
La masa y ancho del $a_1(1260)$, fue propuesta en 1971 y las primeras mediciones se realizaron en 1978. En años posteriores con el avance tecnológico se esperaba mejorar la precisión de estos resultados sin embargo, lo que se ha obtenido es una distribución muy dispersa e incompatible. Hemos rastreado estas discrepancias a la dependencia del modelo al momento de realizar el ajuste a los datos
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Presented by Mr. Sergio GARCIA MONREAL
Hace poco más de una década, un concurso de la División de Partículas y Campos de la Sociedad Mexicana de Física me abrió la puerta a una oportunidad que cambiaría mi vida. Lo que comenzó como una estancia de investigación se convirtió en una trayectoria de diez años en investigación y desarrollo en fuentes de electrones polarizados y dispositivos electrostáticos para aceleradores de
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Presented by Gabriel PALACIOS SERRANO
The computation of the topological charge $Q$ and its density $\rho_Q$, in field theories is often relevant.
However, $\rho_Q$ is only well defined for smooth configurations of the fields.
Unfortunately, it is difficult to obtain directly on the lattice.
Most of the generated configurations are rough due to ultraviolet fluctuations.
The Gradient Flow is a powerful method to smooth out field
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Presented by Mr. Jose Antonio GARCIA HERNANDEZ
The success of the ALICE programme has allowed to study the hottest state of matter created in the laboratory: the strongly-interacting quark–gluon plasma (sQGP). However, some fundamental questions on the sQGP and other aspects of the strong interaction will still remain open even after LHC Run 4. To address this, the ALICE collaboration has proposed a major upgrade of its detector, known as AL
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Presented by Jesus Eduardo MUÑOZ MENDEZ
The transverse momentum ($p_{\mathrm{T}}$) spectra of charged pions, kaons and (anti)protons in pp collisions at the Large Hadron Collider (LHC) energies encode information about string interactions, which become more prominent in events with high event activity. These interactions can generate radial flow–like effects that depend on hadron mass. In particular, the proton-to-pion ratio as a func
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Presented by Ms. Paola VARGAS TORRES
Neutrino oscillation experiments have demonstrated that neutrinos are massive particles, motivating extensions of the Standard Model capable of generating their masses. Among these extensions, low-scale seesaw models provide an attractive framework by introducing new sterile neutrino states at energy scales potentially accessible to current experiments.
In this work, we study the parameter spac
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Presented by Aurora PONTÓN GALLARDO RODRÍGUEZ
We identify the smallest discrete flavor symmetry and minimal field content that can simultaneously account for neutrino masses and the dark matter sector. Minimality is achieved with a $D_4$ symmetry by adding three right-handed neutrinos and two scalar doublets. Within this framework, tree-level and one-loop contributions yield the observed solar-atmospheric mass hierarchy and neutrino mixing an
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Presented by Mr. Isangel TOLEDO MENDEZ
The transition magnetic moment for Majorana neutrinos is studied in a simple extension of the Standard Model. This extension incorporates two scalar Leptoquarks $S_1$ and $\widetilde{R}_2$ with quantum numbers $(\bar{3},1,1/3)$ and $(3,2,1/6)$ respectively. It is found that these Leptoquarks generate a sizable transition magnetic moment, particularly when the quark bottom is running in the loop. F
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Presented by Dr. Ricardo SÁNCHEZ VÉLEZ
In this work we study a supersymmetric extension of the minimal SU(5) grand unified model. This extension consists in adding a $S_3$-modular symmetry. This symmetry takes the role of flavour symmetry between quarks and leptons. Futhermore, the Higgs scalar sector is extended to include six doublets in contrast to the minimal Higgs sector of the Standard Model. Then we proceed to group the particle
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Presented by Mr. Antonio SAMANIEGO FLORES
Presented by Mr. Antonio SAMANIEGO FLORES
on
18 Jun 2026
at
15:40
Dark matter direct detection and Coherent Elastic Neutrino-Nucleus Scattering (CE$\nu$NS) represent two of the primary frontiers for discovering new particles and exploring physics beyond the Standard Model (SM). Accurately identifying these rare signals requires a precise reconstruction of the ionization signal produced by a recoiling atom. This cascade process partitions the primary nuclear reco
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Presented by Mr. youssef SARKIS MOBARAK
Investigación de la transición entre los mesones rho(1450) y rho(770), vía decaimientos radiativos.
Establecer los diagramas de Feynman relevantes para los procesos del tipo V-> V' gamma -> P P gamma.
Cálculo de la amplitud de transición y observables relevantes.
Presented by Mr. Romero CARLOS
In this work the groundstate energy and radial electron density of the helium atom $^{4}\text{He}$ are obtained using Path Integral Monte Carlo simulations in the imaginary time formalism. The Takahashi–Imada approximation was implemented in order to improve the convergence to the continuous time and avoid the known problem of this simulations with singular potentials.
The simulations were per
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Presented by Mr. Mario Alberto RESENDIZ VIEYRA
Presented by Dr. Javier Alberto MURILLO QUIJADA
on
17 Jun 2026
at
12:25
Hadron and nuclear photon flux models, particle productions in photon-proton proceses and particle correlations, toponium models and their phenomenology, spin correlations and ttbar background rejection
Presented by Dr. Javier Alberto MURILLO QUIJADA
Presented by Dr. Sarira SAHU
on
18 Jun 2026
at
15:00
In this work we consider the calculation of the imaginary part of the dispersion relations of the prop-
agating modes in a model of a charged scalar Bose-Einstein (BE) condensate, as well as the contribution
to the imaginary part of the longitudinal component of the photon polarization tensor and the dielectric
constant. In that model, two modes correspond to the transverse photon polarizations
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Presented by Prof. Sarira SAHU
The measurement of the integrated luminosity recorded by the CMS detector at the LHC in proton-proton collisions during Run 2 and Run 3 is reported. The absolute luminosity calibration is obtained with the van der Meer (vdM) method through beam separation scans that were performed in special accelerator conditions. Multiple independently-calibrated luminosity detectors (luminometers) are employed
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Presented by Mr. Luis Enrique CUEVAS PICOS
Recent ALICE measurements of ultra-long-range azimuthal correlations ($|\Delta\eta|>5$) in low-multiplicity pp collisions at $\sqrt{s}=13$~TeV ($\mathrm{d}N_{\mathrm{ch}}/\mathrm{d}\eta<7$) have revealed significant discrepancies with both hydrodynamic and Color Glass Condensate estimations, challenging the traditional picture of collective behavior in small systems. In this work, we perform a sys
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Presented by Dr. Dushmanta SAHU
We study the consequences for top-quark physics of having electron and positron beams available at the LHeC and FCC-he, as was the case in HERA. We show that the asymmetry between top production in $pe^+$ collisions and antitop production in $pe^-$ reactions is sensitive to $|V_{td}|$. By means of detailed parton-level Monte Carlo simulations of single $t$ and $\bar{t}$ production and its backgrou
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Presented by Dr. Edier PAREDES CRUZ
Machine learning techniques are widely used in many research areas, especially in high energy physics. Here we use the Random Forests algorithm to reconstruct tracks, identify particles, as well as measure their basic properties, like transverse momentum in the environment of the MPD experiment.The results demonstrate a significant improvement, achieving classification purities exceeding 90% al
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Presented by Mr. Rodrigo Alejandro LÓPEZ FLORES
Presented by Dr. Manfred KRAUS
on
18 Jun 2026
at
12:45
I will present our recent calculation of quartic-in-spin contributions to the conservative
binary dynamics of black hole scattering. The calculation is based on two-loop scattering amplitudes in Einstein-Hilbert Gravity combined with a recently introduced spin-interpolation method. The latter allows to extract spin-casimir terms, i.e. $S^2$ contributions, by interpolating between a tower of fixed
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Presented by Dr. Manfred KRAUS
We investigate the 2d $\lambda\phi^4$ model in an expanding space-time with a Friedmann-Lemaître-Robertson-Walker metric. The Euclidean lattice formulation is studied by means of Monte Carlo simulations. We explore the order-disorder phase transition as well as the energy density, both depending on the action parameters $\mu^2$ and $\lambda$, and on the Hubble parameter $H$.
Presented by Emmanuel LUNA AVILES
We study a model in which scalar fields generate gravitational waves through 4-point correlation functions, originating from the scalar power spectrum. The resulting gravitational wave spectrum depends on the couplings of the scalar fields and is predominantly blue-tilted, which automatically satisfies the constraints on CMB scales.
The novelty of our approach lies in computing the gravitationa
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Presented by Mr. Ángel GARCÍA VEGA
Presented by Mr. Ángel GARCÍA VEGA
on
18 Jun 2026
at
15:20
Standard Model electroweak theory and radiative corrections to the Weinberg angle ($\sin^2\theta_W$) predict that neutrinos, while electrically neutral, possess quantifiable electromagnetic properties. Specifically, one such property is the neutrino charge radius (NCR). This poster presents how different experimental configurations involving reactor antineutrinos interacting via Coherent Elastic N
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Presented by Mr. Mario GUERRA
Dark matter direct detection experiments have recently detected solar neutrinos for the first time through the process called coherent elastic neutrino-nucleus scattering. This milestone makes understanding the so-called "neutrino fog", an irreducible background that can mimic dark matter signals, more important than ever.
The neutrino fog is not universal: it varies depending on the detector mat
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Presented by Mario LAMPREA
Presented by Mario LAMPREA
on
17 Jun 2026
at
17:30
Reactor antineutrino flux predictions are presented for the four primary fissile isotopes (\({}^{235}\)U, \({}^{238}\)U, \({}^{239}\)Pu, and \({}^{241}\)Pu) using two complementary approaches within the CONFLUX software framework: the ab-initio summation method and the conversion method. The conversion method utilizes reanalyzed reactor beta spectra provided by CONFLUX, whereas the ab-initio spect
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Presented by Mr. Manuel ÁLVAREZ HERNÁNDEZ
Presented by Prof. Martínez Soler IVÁN
on
19 Jun 2026
at
09:00
Session:
'Sala B' Session
Presented by Dr. Jesús Alejandro MIRANDA HERNÁNDEZ
on
17 Jun 2026
at
15:40
We review the current status of the tau-data based a_mu^{HVP,LO}, which agrees with the lattice determinations and the a_mu measurement, restricting severely possible new physics contributions to this precision observable.
Presented by Dr. Jesús Alejandro MIRANDA HERNÁNDEZ
The ALICE experiment will undergo a major upgrade (ALICE 3), in which a new generation of detectors will be designed and built from scratch to incorporate emerging technologies and achieve significantly improved performance [1]. Development efforts toward these detectors started several years ago to ensure their readiness for installation around 2035 [2].
Mexican researchers are contributing t
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Presented by Dr. Jaime Octavio GUERRA PULIDO
Una Teoría de Campos Conformes a nivel clásico es una teoría invariante ante el grupo de Poincaré extendido con transformaciones de reescalamientos de la métrica por un factor global en las coordenadas y que puede depender del espaciotiempo.
En el contenido de la plática desarrollamos el formalismo que identifica los vectores de killing que generan el difeormorfismo de las transformacione
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Presented by Mr. Carlos Alfredo LÓPEZ TÉLLEZ
Presented by Prof. Jens ERLER
on
18 Jun 2026
at
09:00
In this work, we are interested in studying the spin-spinor formalism to deal with amplitudes for massive particles. After presenting the basic formulae and conventions, we evaluate the amplitudes for two specific examples, namely the decay $W \rightarrow l \nu_l$ and the reaction $ e^+ e^- \rightarrow \mu^+ \mu^-$. For each case, we display the amplitudes for all possible spin configurations for
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Presented by Mr. Jonathan REYES PÉREZ
1. An study of the Yukawa lagrangian of 2HDM-III and the Yukawa matrices,
2. Limits from strict Glashow-Weimberg Theorem and Alignment to minimal FCNC scenarios,
3. New parametrization for Yukawa matrices in terms of diagonal and non-diagonal entries,
4. Limits and patterns of FCNC Higgs couplings,
5. Conclusions
Presented by Dr. Lorenzo DIAZ-CRUZ
Presented by Mr. youssef SARKIS MOBARAK
on
17 Jun 2026
at
17:10
In this work, a theoretical sensitivity analysis of neutrino electromagnetic properties is presented through coherent elastic neutrino–nucleus scattering (CEvNS) using reactor antineutrinos. The nuclear recoil spectrum and the expected number of events are calculated for different target materials, including both the Standard Model contribution and possible modifications arising from the neutri
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Presented by Mrs. Sara Jhoana GONZÁLEZ MORALES, Estela GARCÉS
Precision physics at the LHC requires the combination of fixed-order perturbative calculations with the simulation of multiple QCD radiation, which can be described through parton-shower (PS) algorithms, in order to obtain reliable predictions for experimental observables. In this context, simulation frameworks such as MG5$\_$aMC@NLO and POWHEG have proven to be essential tools for achieving a con
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Presented by Luz Silvana RODRÍGUEZ MELÉNDEZ
We present an analysis of the very-high-energy observations of the exceptional long-duration gamma-ray burst GRB 221009A performed by the H.E.S.S. telescopes starting 53 hr after the trigger. Although no significant VHE emission was detected during the observations on 2022 October 11, 12, and 17, flux upper limits were derived under challenging atmospheric conditions. Using the photohadronic model
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Presented by Ms. Paez Sanchez DIANA ITZEL
Light-by-light scattering, a purely quantum and nonlinear prediction of Quantum Electrodynamics (QED), has represented both a theoretical and experimental challenge since the formulation of the Heisenberg-Euler effective action. In this talk, a historical review of the development of QED will be presented, focusing on the phenomenon of light-by-light scattering. Subsequently, the Worldline Formali
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Presented by Dr. Moctezuma MATA
Recently, Ahmadiniaz et al. derived an elegant worldline path integral representation of the fermion propagator dressed with any number of photons in quantum electrodynamics. Its main features are the avoidance of long Dirac products and the unification of all Feynman diagrams into a compact master formula. This master formula comes in two versions, one based on worldline supersymmetry and the oth
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Presented by Mr. Carlos Javier SERVIN TOMAS
