9th International Conference on High Energy Particle and Nuclear Physics in the LHC Era

Session

Poster session

9 Jan 2025, 16:20

Hall of Building A (Santa Maria University)

525. Analysis of the emission spectra of an evaporating Schwarzschild black hole

Miguel Figueroa (Universidad Técnica Federico Santa María)

Poster

Many early universe theories predict the creation of Primordial Black Holes (PBHs) that could have sufficient mass to be expiring today with a final burst of Hawking radiation. A Black Hole (BH) has a Hawking temperature inversely proportional to its mass. Hence, a sufficiently small BH will quasi-thermally radiate particles at an ever-increasing rate as it evaporates and raises its...

511. Angle reconstruction for Cosmic Rays at CONDOR Observatory

Constanza Valdivieso (Universidad Técnica Federico Santa María)

Poster

The COmpact Network of Detectors with Orbital Range (CONDOR) Observatory is a future cosmic ray observatory to be constructed at an altitude of 5300 m a.s.l. in the Atacama Desert, making it the highest detector array in the world. CONDOR observatory aims to detect cosmic rays with energies starting at ~100 GeV scale, a range crucial for bridging the gap between satellite and ground-based...

524. Estimates for Bc meson production at LHCb

Franco Barattini (Universidad Tecnica Federico Santa Maria)

Poster

Among the $B$ mesons, the $B_c$ meson is unique as it is the only one composed of two different heavy flavors, $b$ and $c$, making its production and detection more challenging than other $b$-flavored mesons. This results in significant uncertainties in its dynamic properties. Consequently, rather than reporting its differential production cross-section, the LHCb collaboration [1] provides the...

523. Neutrino portal for vector dark matter

Pablo Solar

Poster

In the Fermion Portal Vector Dark Matter (FPVDM) framework, We study how to connect the standard model with dark matter via neutrinos. In This framework standard model is expand with a $SU(2)_D\times U(1)_{YD}^g$ dark sector, where the $SU(2)_D$ gauge bosons are the dark matter candidates (specifically the $V^{\pm}$ components), this symmetry is broken by a dark scalar $\Phi_D$, giving mass to...

510. Particle Identification for Cosmic Rays at the CONDOR Observatory

Gonzalo Ignacio Munoz Justiniano (Federico Santa Maria Technical University (CL))

Poster

The CONDOR (COmpact Network of Detectors with Orbital Range) project aims to establish the highest-altitude observatory for cosmic rays at the Atacama Astronomical Park in northern Chile. Positioned at 5.300 meters, CONDOR will provide unique sensitivity to low-energy cosmic ray (CR) particles, particularly from ~100 GeV, contributing to our understanding of cosmic rays and their interactions...

532. Probing light neutralinos from pair produced sleptons with a displaced vertex at the LHC

Fabián Hernández Pinto (Universidad Técnica Federico Santa María)

Poster

We study light neutralinos ($\tilde \chi_1^0$) with masses of the order of the GeV scale in the context of R-parity-violating (RPV) supersymmetry. For such masses, the neutralinos can become long-lived particles and decay with a macroscopic (order cm) displacement inside LHC detectors. Complementing previous works, we focus on their production through a pair of sleptons ($\tilde e_{L}$) with...

561. Real-Time Classification of Higgs Boson Production Mechanisms for the ATLAS Trigger System Using FPGA-Optimized Machine Learning Models

Addles Joshua Castillo Espinosa (Millennium Institute for Subatomic Physics at High Energy Frontier (CL))

Poster

The High-Luminosity Large Hadron Collider (HL-LHC) will demand highly efficient and fast data processing systems to handle unprecedented event rates. In this study, we present a novel approach to real-time classification of Higgs boson production mechanisms—focusing on gluon-gluon fusion (ggF) and vector boson fusion (VBF)—using machine learning (ML) models optimized for deployment on...

512. Renormalon-based Resummation of the Bjorken Sum Rule in Holomorphic QCD

Camilo Castro Arriaza (Universidad Técnica Federico Santa María)

Poster

We evaluate the polarised Bjorken sum rule (BSR) $\overline{\Gamma}^{p-n}_1(Q^2)$ with truncated Operator Product Expansion (OPE) up to the $D=4$ term [1]. Due to the knowledge of the renormalon structure of the BSR, the leading-twist term of dimension $D=0$ is evaluated using a recently developed renormalon-based resummation [2], in this case with two variants of holomorphic QCD couplings...

529. Using optimal observables to probe CP-violation in top-Higgs interactions

Marcel I. Yanez

Poster

In the context of collider searches for new physics one of the main candidates for extensions of the standard model is the existance of CP violating interactions. In this work, we introduce a CP violating Yukawa interaction between the top quark and the Higgs boson. Utilizing Higgs Effective Field Theory (hEFT) and the optimal observable technique in the heavy quark approximation, we provide a...