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Daniel Tapia Takaki (University of Kansas)10/11/2025, 09:15
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Dr Francesco Giuli (INFN e Universita Roma Tor Vergata (IT))10/11/2025, 09:30
27+3'
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Christophe Royon (The University of Kansas (US))10/11/2025, 10:00
27+3'
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Emmanuel Gräve de Oliveira (UFSC, Brazil)10/11/2025, 11:00
23+2'
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Interactions of high-energy neutrinos with matter can be studied through the angular separation observed in dimuon production, an observable particularly sensitive to the transverse momentum dynamics of partons. In this work, we develop a Monte Carlo event generator based on the color dipole model, interfaced with Pythia8 for parton showering and hadronization simulations, to predict... -
Richard Terra de Oliveira (Instituto de Física da USP)10/11/2025, 11:25
18+2'
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In this work we discuss the possibility of accessing the initial geometric shape of the proton in proton-nucleus collisions at the LHC. More specifically, we want to test the configuration in which the proton is made of three quarks linked by a Y-shape gluon string, called baryon junction. This initial state spatial configuration has been used in the past to describe data on baryon... -
Joao Vitor Lovato (Universidade Federal de Santa Catarina)10/11/2025, 11:45
18+2'
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The effective cross section of double parton scattering in high-energy hadron collisions has been measured in proton--proton collisions, with significant variation among final-state observables, contrary to the idea of a universal value. Building upon our previous work, we incorporate the dependence on the parton longitudinal momentum fraction x and the process energy hard scale μ into... -
Maral Salajegheh (HISKP, University of Bonn)10/11/2025, 12:05
23+2'
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We present new parton distribution functions (PDFs) at next-to-leading order (NLO) and
next-to-next-to-leading order (NNLO) in perturbative QCD, derived from a comprehensive QCD analysis
of high-precision data sets from combined HERA deep-inelastic scattering (DIS),
the Tevatron, and the Large Hadron Collider (LHC). To improve constraints on quark
flavor separation, we... -
Prof. Bruno El-Bennich (Federal University of São Paulo)10/11/2025, 14:00
I will review the calculation of parton distribution functions of meson derived from either light-front wave functions or from a cut diagram based on the optical theorem applied to Compton scattering. The latter approach can also be used to compute an elementary fragmentation for the case of a quark into a meson. However, there is no reason a high-energy quark should fragment into just one...
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Saray Arteaga Escatel (The University of Kansas (US))10/11/2025, 14:25
18+2'
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Luana Santana (Universidade Federal de Pelotas)10/11/2025, 14:45
18+2'
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The inclusive $D^0$ and $B^0$ photoproduction in $pPb$ and $PbPb$ collisions at the center - of - mass energies of the Large Hadron Collider (LHC) is investigated considering the color dipole S - matrix approach. The analytical expressions for the differential distributions are derived in the transverse momentum space and predictions for the rapidity and transverse momentum... -
Martin Hentschinski (Universidad de las Americas, Puebla)10/11/2025, 15:05
23+2'
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Luis Alcerro Alcerro (The University of Kansas (US))11/11/2025, 09:00
23+2'
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Murilo Santana Rangel (Federal University of Rio de Janeiro (BR))11/11/2025, 09:25
23+2'
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Edgar Huayra11/11/2025, 09:50
18+2'
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At high energies, double parton scattering plays a crucial role in studying the double parton distribution function for the proton. Extracting this distribution is highly complex. To address this challenge, we propose a novel channel to further investigate it: the associated production of mesons and leptons, such as $J/\psi$ and $\mu^-\mu^+$ pairs, in ultraperipheral $Ap$ collisions. In... -
Haimon Trebien (Universidade Federal de Santa Catarina)11/11/2025, 10:10
18+2'
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We study the photoproduction of light vector mesons considering the proton and the nucleus as the target. Utilizing the dipole picture and the wave functions obtained via AdS/QCD, we were able to describe the HERA γp data and extend the analysis to the nuclear case considering the Glauber–Gribov formalism supplemented by an effective suppression factor RG accounting for the gluon... -
Cristiane Jahnke Fiorini Da Silva (University of Campinas UNICAMP (BR))11/11/2025, 11:00
23+2'
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Dr Georgios Krintiras (The University of Kansas (US))11/11/2025, 11:25
23+2'
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Cesar Bernardes (UNESP - Universidade Estadual Paulista (BR))11/11/2025, 11:50
18+2'
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Allan Eduardo Flores Godoi Ferreira (UFRGS - Universidade Federal do Rio Grande do Sul (BR))11/11/2025, 12:10
18+2'
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Event-by-event quantum fluctuations in the initial stages of ultrarelativistic nucleus–nucleus collisions have been theoretically predicted to influence observables constructed from final-state quantities, such as azimuthal two-particle momentum correlations. In several instances, these predictions have been indirectly confirmed through comparisons between experimental data and... -
Varese Salvador Timóteo (University of Campinas - UNICAMP)11/11/2025, 14:15
18+2'
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Evidences of vortical effects have been recently found by experiments in heavy ion collisions, instigating new insights into the phase diagram of quantum chromodynamics. Considering the effect of rotations, lattice QCD calculations shows that temperatures for deconfinement and chiral symmetry restoration should increase with the angular velocity, and the dominant effects are related to... -
Dr Shubhalaxmi Rath (Universidad Mayor)11/11/2025, 14:35
18+2'
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We have explored the influence of angular velocity on the shear and bulk viscosities of a rotating QCD medium. In the noncentral events of the relativistic heavy ion collisions, the resulting QCD medium acquires finite angular momentum, giving rise to a finite angular velocity. This rotational motion can notably alter various properties of the hot QCD medium, including the viscous... -
Cicero Domenico Muncinelli (University of Campinas UNICAMP (BR))11/11/2025, 14:55
18+2'
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We propose a novel observable of jet thermalization in high-energy nuclear collisions, based on correlating $\Lambda$ hyperon polarization with vortex dynamics. Using hybrid simulations, we show that the deposition of energy and momentum by quenched jets generates toroidal vorticity rings, a ubiquitous structure in fluid dynamics. These rings induce a corresponding toroidal pattern of... -
Prof. Alejandro Ayala (Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico)11/11/2025, 15:45
23+2'
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We compute the photon yield and elliptic flow coefficient in relativistic heavy-ion collisions from gluon fusion and splitting processes induced by a magnetic field. The calculation accounts for the intense magnetic field and the high gluon occupation number at early times. The photon production induced by these process represents an excess contribution over calculations without... -
Thiago Siqueira Domingues11/11/2025, 16:10
18+2'
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We present the first comprehensive Bayesian calibration of a state-of-the-art hybrid heavy-ion collision model incorporating a novel observable: the scaled particle spectra of pions. This observable isolates the intrinsic spectral shape and reveals a remarkable degree of universality across centrality classes and collision systems. Leveraging the JETSCAPE framework, we construct... -
Rafael Silva Coutinho (CBPF - Brazilian Center for Physics Research (BR))12/11/2025, 09:00
23+2'
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Dr Paras Naik (University of Liverpool (GB))12/11/2025, 09:25
23+2'
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The LHCb experiment is well suited to the spectroscopy of heavy flavor hadrons. The proton-proton collisions provided by the Large Hadron Collider produce a variety of heavy flavor states, and the excellent vertex and momentum resolution of the LHCb detector enables precision studies of hadron properties. Access to the kinematics of full decay chains allows amplitude analysis, which... -
Alberto Martinez Torres (University of Sao Paulo)12/11/2025, 09:50
18+2'
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Prof. KANCHAN PRADEEPKUMAR KHEMCHANDANI12/11/2025, 10:10
18+2'
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Alberto Correa Dos Reis (CBPF - Centro Brasileiro de Pesquisas Físicas (BR))12/11/2025, 11:00
23+2'
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Patricia Magalhaes (UNICAMP)12/11/2025, 11:25
23+2'
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Juan Baptista de Souza Leite (CBPF - Brazilian Center for Physics Research (BR))12/11/2025, 11:50
18+2'
The large masses of B mesons allow them to decay into baryonic final states. The first observations and studies of such baryonic B decays were performed by the ARGUS and CLEO experiments in the 1990s.The LHCb collaboration has measured the branching fractions of the decays $B^0$ and $B^0_s \to p \bar{p} p \bar{p}$ to be of the order of $10^{-8}$ using Run 1+2 datasets...
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Felipe Cesario Laterza Lopes (Universidade Estadual de Campinas)12/11/2025, 12:10
18+2'
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Charge-Parity Violation (CPV) is expected in 3-body charm decays such as the $D^+\rightarrow K^- K^+\pi^+$. This is an interesting channel to investigate, and an amplitude analysis is required to understand the dynamics of different contributions to the final state and the dynamical origin of CPV. The present research seeks to analyse recent data of the Large Hadron Collider beauty... -
Taisiya Mineeva (Universidad de La Serena (CL))12/11/2025, 14:30
27+3'
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The Jefferson Lab eA program, initially carried out with a 5 GeV electron beam and the CLAS detector, is now continuing with beam energies up to 11 GeV using CLAS12. Looking ahead, there are plans to extend the program to higher energies following the CEBAF upgrade to beyond 20 GeV. The aim of eA program is to investigate the underlying mechanisms of medium-induced modifications to... -
Prof. Hayk Hakobyan (Universidad Técnica Federico Santa María)12/11/2025, 15:00
27+3'
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Studying hadronization - the process by which quarks and gluons transition into hadrons -is fundamental to understanding the strong interaction dynamics within quantum chromodynamics (QCD). Using the CLAS12 detector at Jefferson Lab, the Run Group E (RGE) experiment offers unprecedented insights into hadronization in the nuclear medium. This talk will present preliminary results from... -
Celsina Azevedo (University of Sao Paulo)12/11/2025, 15:30
Recent studies indicate that the decay width $\Gamma(\pi^0\to\gamma\gamma)$ is strongly reduced in the presence of a uniform external magnetic field. In this work, we study the effect of the magnetic field on the production of neutral pions in photon-photon interactions in ultra-peripheral heavy-ion collisions. In addition, we present the calculation of the production cross section of the...
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Mr Jeferson Dos Santos Oliveira (Brazilian Center for Research in Physics (BR))12/11/2025, 15:36
The LHCb detector, with its forward rapidity coverage, can probe kinematic regions at low Bjorken-x as low as $10^{-6}$. This unique capability, combined with excellent momentum resolution, vertex reconstruction, and particle identification, enables precision measurements at low transverse momentum and forward rapidity.
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Studies of associated production of $\Psi(2S)$ and $\Phi$ in diffractive... -
Jorge Julio Barreiros Venuto De Siqueira (CBPF - Brazilian Center for Physics Research (BR))12/11/2025, 15:42
The study of charge asymmetries in three-body 𝐵 ± → h h h decays provides a sensitive probe of CP violation in the beauty sector. Using the first data collected during LHCb Run 3, we are performing a preliminary investigation aimed at measuring these asymmetries through fits to the invariant mass distributions of selected candidates. The upgraded detector and higher instantaneous luminosity of...
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Mr Thiago De Andrade Rangel Monteiro (Rio de Janeiro State University - (UERJ))12/11/2025, 15:48
Rare decays of B mesons, such as B⁰ → K*⁰(892)μ⁺μ⁻, play a crucial role in testing the Standard Model (SM) of particle physics and probing potential signs of New Physics (NP). These flavor-changing neutral current (FCNC) processes are forbidden at tree level in the SM and occur only via higher-order loop diagrams, making them extremely sensitive to virtual contributions from beyond the SM...
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Brunno Mota12/11/2025, 15:54
In high-energy physics, understanding and describing interactions involving protons is essential. One of the first steps needed is to correctly model the proton. Assuming minimization of the momentum flux within the proton, the Y-shaped proton is the natural choice. Since the investigations focus on particle collisions and considering that charges in ultrarelativistic motion produce a photonic...
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Mr Jhon Mario Cordoba Pareja (São Paulo University)12/11/2025, 16:00
In this work, we analyze the scaling properties of Yang-Mills field theory that manifest as self-similarity of n-point functions truncated by the scale evolution. In certain approaches, fractal structures are used in Yang-Mills theories to circumvent computational difficulties, allowing the determination of an analytical expression for the coupling constant, which agrees with the results...
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Omar Silveira (Universidade Federal do Rio Grande do Sul (UFRGS))12/11/2025, 16:06
This work consists of a projection study on the efficiency of the PPS detector in the high-luminosity regime through the CEP process $pp\rightarrow p(W^{+}W^{-})p$ with hadronic decay in both W bosons. Simulated samples containing: signal for SM, anomalous coupling $a_0^W = 2\times 10^{-7}$, anomalous coupling $a_C^W = 2\times 10^{-5}$, and with the QCD background for $pp\rightarrow 4J$, were...
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Mrs Valeria Vale (CBPF - Brazilian Center for Physics Research (BR))12/11/2025, 16:12
The High-Luminosity LHC (HL-LHC) presents challenges due to up to $200$ simultaneous interactions per beam crossing, where around $10\sim15\%$ of the reconstructed vertices are composed of multiple interactions time-separated by about $\sim150~\text{ps}$, which degrades the performance and the accuracy of the event reconstruction. To mitigate this, it is required to employ more precise timing...
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Marcio De Sousa Mateus Junior (SPRACE - UNESP)12/11/2025, 16:18
The unprecedented proton-proton collision energy and the large data volumes reached by the LHC and the CMS detector with supreme particle detection capabilities provide a unique setting for discovering the particle constituting the dark matter. Since the beginning of the LHC, there were various DM searches within the CMS experiment. With this analysis, we embark on a novel search for...
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Henrique Rodrigues Martins Fontes (Instituto de Física da USP)13/11/2025, 09:00
18+2'
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The multiplicity distribution (MD) of charged particles in high-energy proton-proton collisions remains an intricate aspect of quantum chromodynamics (QCD). Traditional models, such as the Negative Binomial Distribution (NBD), successfully described MDs at lower energies, but fail at higher energies, such as those probed by the Large Hadron Collider (LHC), where a "shoulder-like"... -
Dr Javier Alberto Murillo Quijada (Universidad de Sonora (MX))13/11/2025, 09:20
23+2'
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After confirmation of production of exclusive events with intact protons and ions at the LHC such as light by light scattering or dilepton exclusive production, there is increased interest to probe for photo or pomeron induced production of mesons and di-quark pair systems such as top antitop pairs. The talk describes key signatures for ttbar production with a single intact proton via... -
Jesus Alberto Velazquez Corral (The University of Kansas (US))13/11/2025, 09:45
18+2'
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Diffractive processes in proton–lead (pPb) collisions provide a window into the nonperturbative regime of QCD, where color singlet exchanges and gluon saturation phenomena may play a key role. Recent observations of collective-like effects within jets suggest that signatures of collectivity, traditionally associated with heavy-ion collisions, may also emerge in small systems. In this... -
Frigyes Janos Nemes (CERN (also at Wigner RCP Budapest, Hungary))13/11/2025, 10:40
27+3'
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Janusz Chwastowski (Polish Academy of Sciences (PL))13/11/2025, 11:10
27+3'
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A key focus of the physics program at the LHC is the study of head-on proton-proton collisions. However, an important class of physics can be studied for cases where the protons narrowly miss one another and remain intact. In such cases, the electromagnetic fields surrounding the protons can interact producing high-energy photon-photon collisions. Alternatively, interactions mediated by... -
Mr Daniel Ernani Martins Neto (Polish Academy of Sciences (PL))13/11/2025, 11:40
18+2'
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The Time-of-Flight (ToF) detectors in the ATLAS Forward Proton (AFP) system are designed to determine the primary vertex z-position of the pp -> pXp processes by comparing the arrival times measured in the ToF for the two intact protons in the final state. We present performance studies in terms of efficiencies and timing resolutions using high-statistics, low, and moderate pile-up data... -
Christophe Royon (The University of Kansas (US))13/11/2025, 13:50
23+2'
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Clemencia Mora Herrera (CBPF - Brazilian Center for Physics Research (BR))13/11/2025, 14:15
18+2'
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Lydia Audrey Beresford (Deutsches Elektronen-Synchrotron (DE))13/11/2025, 14:35
18+2'
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Gustavo Gil Da Silveira (Universidade do Estado do Rio de Janeiro (BR))13/11/2025, 14:55
23+2'
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This talk will present the recent results from various analyses on signals containing intact protons measured by the CMS Precision Proton Spectrometer (PPS), which includes searches for New Physics in the electroweak sector. As the operation of the HL-LHC will require more stringent selection of intact protons due to the higher pileup, the PPS2 project will be presented and projections... -
Gero von Gersdorff13/11/2025, 15:50
23+2'
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Andre Asevedo Nepomuceno (Universidade Federal Fluminense)13/11/2025, 16:15
23+2'
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The baryon number violation is an essential ingredient for the preferential creation of matter over antimatter needed to account for the observed baryon asymmetry in the Universe. However, a process that violates baryon number has yet to be experimentally observed. The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source (ESS) to search for baryon... -
Leticia Palhares
23+2'
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Tobias Frederico
18+2'
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Antonio Vilela Pereira (CBPF - Brazilian Center for Research in Physics (BR))
23+2'
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Fernando Navarra
23+2'
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