In this work, we discuss the mass spectra and decays of doubly heavy $\Xi$ baryons in the framework of a non-relativistic quark model. We consider a baryon with two heavy quarks including $\Xi_{ccd}$, $\Xi_{ccu}$, $\Xi_{bbd}$, $\Xi_{bbu}$, $\Xi_{bcd}$ and $\Xi_{bcu}$. We find the wave functions, eigenenergies and mass spectra of the system under investigation by solving the hyperradial...
The talk is about my PhD project which is about the extraction of the transversity function through di-hadrons observables. I will explain why I am interested in this project and what are the main features and difficulties.
We perform a detailed phenomenological analysis of how well hadronization in nuclear environments can be described in terms of effective fragmentation functions. The medium modified fragmentation functions are assumed to factorize from the partonic scattering cross sections and evolve in the hard scale in the same way as the standard or vacuum fragmentation functions. Based on precise data on...
The purpose of this work is to obtain Parton distribution function(PDF) from Lattice QCD observables. This can be achieved with the help of the Ioffe-time pseudo- distributions formalism, where this task reduces to solve an inverse problem. I introduce Invertible Neural Networks (INN) and Gaussian Process(GP) techniques that have been implemented and developed in the recent years to infer PDF...
The JPAC frequentist approach to the reaction $\gamma p \rightarrow J/\psi p$ has led to an interesting discussion of possible interesting phenomena occurring in 2C and non-resonant 3C channels seen in cusps in the cross section versus energy diagrams. However, the frequentist approach involves complications during the uncertainty discussion, so we endeavor to apply Bayesian statistic...
Artificial Intelligence (AI) generative models have been successfully used in several field. In this contribution I will present results of the A(I)DAPT (AI for Data Analysis and Data PreservaTion) working group. Our objective is to develop AI-based tools to address the main challenges in Nuclear Physics and High Energy Physics measurements: unfold detector effects and preserve...
In this seminar, I will present our recent work on ρ and 𝜙 vector meson production using light-front holographic QCD. The total cross section is convoluted with the light-front wave functions (LFWFs) of both the produced vector mesons from holographic QCD and the photon LFWFs, which are calculable in perturbative QCD, as well as the dipole scattering amplitude. Furthermore, we have also...
In this presentation, I will present an overview of Generalized Parton Distributions (GPDs), crucial tools in understanding the intricate structure of hadrons, and experimental efforts at Jefferson Lab to probe them. We begin by introducing light cone coordinates, which provide a natural framework for describing the internal dynamics of hadrons in high-energy processes. Motivating the need for...
In 2210.08051, Briceño, Jackura, Rodas and Guerrero developed formalism allowing us to explore the process gamma gamma -> pi pi through lattice results. Such a process is of importance to, for example, our understanding of glueballs and muon g-2. It is also a stepping stone towards beyond standard model physics, such as double beta decay. We will explain ongoing work towards testing this...
Recent years have seen much activity in searches for dark-sector messenger particles in the 10–100 MeV mass range, especially in view of a potential new light boson conjectured by the ATOMKI Collaboration, X17. Under the assumption that the messenger particle has definite parity and either zero or unit spin, quite stringent bounds already exist on its coupling to electrons and protons. Equally...
Photonuclear reactions using real photons provide a unique probe for fundamental aspects of QCD in the nuclear medium. The experiment E12-19-003 was conducted at Jefferson lab in the fall of 2021 using a real photon beam from a 10.9 GeV electron beam on liquid helium, deuterium, and carbon targets using standard GlueX detector configuration. In this experiment, we use photonuclear reactions...
The influence of anisotropic momentum distribution and strangeness chemical potential on finite volume isospin asymmetric quark matter is investigated by using a three-flavored Polyakov quark meson model. The model incorporates quark condensates and vector fields to study the QCD phase transitions and susceptibilities of conserved charges in both anisotropic and isotropic quark mediums. A...
The two-nucleon system is ubiquitous in nuclear physics and has long served as a test bed for nuclear models and calculations. Recent advances in lattice QCD have allowed the first investigations of the two nucleon system, along with the formalism necessary to calculate matrix elements and connect them to physical observables. In this talk, we will address the need for electroweak matrix...
Evaluating disconnected 3-point functions which utilize standard 2-point functions of pions, protons, and anti-protons at non-zero momentum and wilson loops of a large range of sizes produce a correlation that is significantly higher than one.
As nuclear physics moves solidly into the 21st century, we are in need of high-coverage, high-rate detection of events. The Solenoidal Large Intensity Device SoLID seeks to fill that need for a large-acceptance, high-luminosity device in Hall A of Jefferson Lab. In keeping with the theme of modernization, the SoLID collaboration has sought to bring cutting-edge technologies and methods into...
The MOLLER (Measurement Of Lepton-Lepton Electroweak Reaction) experiment is an ultra-precise measurement of the parity-violating asymmetry, APV, in purely leptonic Møller interactions between longitudinally polarized electrons and unpolarized electrons in a liquid hydrogen target at momentum transfer Q2 < mZ. The APV measurement is predicted to be ~33ppb and will be measured to an overall...
Inclusive electron scattering experiments performed at JLab have been a powerful tool to probe nuclear structure. Mean field theory has been a very accurate model at predicting a variety of properties of the nucleus. However, it fails to predict the distribution of high momentum nucleons within the nucleus. To answer this, the SRC picture points to multi-nucleon Short-Range Correlations (SRCs)...
The reconciliation of observable properties of hadrons with the fundamentals of QCD has remained a persisting challenge in modern nuclear theory. Lattice QCD is a numerical method that bridges the gap between first-principles QCD and observables in nuclear systems in the strong coupling regime. By casting a scattering problem onto a finite, discretized spacetime lattice, one obtains a...
The deuteron electro-disintegration $D(e,e'p)n$ experiment aims to measure D(e,e'p)n cross sections at high $Q^2$, $x_{Bj}~1$, and missing momenta $p_m>600$ MeV/c with great statistical precision. To obtain a greater understanding of the strong nuclear force, we must probe the nucleus at sub-fermi distances where the nucleons overlap. In this region, the nucleon-nucleon (NN) interaction...
The PrimEx experiment at Jefferson Lab aims to extract the η radiative decay width via the Primakoff effect. This process can be seen as the inverse process of the decay of the η-meson into two photons. The experiment collected data on liquid helium target in three different phases, 2019, 2021 and 2022 utilizing the GlueX detector in Hall-D. By extracting a high precision measurement of the...
Vector meson photoproduction observables may provide insight into the internal structure of the nucleon. This work aims to extend world data on determinations of differential cross section for rho^0 photoproduction off protons. The analysis is performed using data from by the CLAS6 detector during the g12 run period for beam energies between 1.15 and 5.45 GeV and -t between 0 and 5 GeV^2.
A(i)DAPT is a program which aims to utilize AI techniques, in particular generative modeling,
to support Nuclear and High Energy Physics experiments. Its purpose is to extract physics directly from data in the most complete manner possible. Generative models such GANs are employed to capture the full correlations between particles in the final state of nuclear
reactions. This many-fold...
There is great interest in studying the elastic and transition form factors of baryon excitations. As a first step it is necessary to understand the structure within the baryons such as masses, decay constants, etc., I will show how we study from the masses to the form factors of the baryons using a formalism based on terms of a contact interaction.
At present, there is a lack of experimental data constraining the strange nucleon PDFs' dependence on the parton momentum fraction and the weak mixing angle's low-$Q^2$ behavior. The parity-violating asymmetry from the neutral-current deep inelastic scattering of electrons from proton and deuterium targets, which will be measured by the upcoming SoLID experiment at Jefferson Lab, possesses a...
This research project is centered around Jefferson Lab (JLab) experiment E12-07-109 (GEp-V) to measure the proton electromagnetic form factor ratio G_E^P/G_M^P. GEp-V will use the recoil polarization technique in which a longitudinally polarized electron beam is scattered off a fixed unpolarized proton target. The resulting transfer of polarization to the recoiling proton is measured and the...
We formulate a light-front spectator model for the proton that incorporates the presence of light sea quarks. In this particular model, the sea quarks are seen as active partons, whereas the remaining components of the proton are treated as spectators. The proposed model relies on the formulation of the light-front wave function constructed by the soft wall AdS/QCD. The model wave functions...
The plan for future Electron-Ion collider (EIC) aims to open the regime of experimental detection of distribution functions (DFs) consisting of a new range of polarization states of parton and its parent nucleon. This demands the theoretical advancement of parton distributions at all levels of twist. By detangling the quark-quark generalized parton correlation functions (GPCFs) at various...
This presentation explores heavy ion collisions and their role in understanding quark gluon plasma (QGP). The experiments conducted at the Large Hadron Collider (LHC) and the Relativistic Heavy Ion Collider (RHIC) allow for the study of the properties and dynamics of QGP and the processes of quantum chromodynamics (QCD). These collisions provide insight into one of the simplest forms of...
This talk examines the chiral phase transition in Lattice Quantum Chromodynamics (QCD) at high temperatures, a key aspect of strongly interacting matter and a signature of the Quark-Gluon Plasma (QGP). We will explore chiral symmetry restoration in both the chiral limit and with massive quarks, and its implications for the QCD phase diagram. Key focus areas include the behavior of the Wilson...
Generally, low energy Quantum Chromodynamics cannot be solved by perturbative methods. To overcome this discrepancy with respect to the high energy scale, which allows a perturbative calculation, a scale factorization can be performed through SCET. In this work, we will begin by outlining a brief introduction to the SCET formalism and we will also show that it is possible to decouple, in the...
Deeply virtual Compton scattering (DVCS) is a crucial process for probing generalized parton distributions (GPDs), providing insight into the internal quark-gluon structure of nucleons. In this process, a virtual photon is absorbed by a quark inside the nucleon which in turn re-emits a real photon. In particular, the DVCS off the neutron (n-DVCS) is sensitive to the GPD E, the least...
