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David Dean (TJNAF)5/26/26, 8:30 AM
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Alberto Accardi (Christopher Newport U. and Jefferson Lab)5/26/26, 8:45 AM
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Jennifer Williams (JLAB)5/26/26, 9:30 AM
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Lisa Surles-Law (Jefferson Lab)5/26/26, 10:00 AM
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Ming Li (Hampton)5/26/26, 1:30 PM
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Ming Li (Hampton)5/26/26, 2:45 PM
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Justin Stevens (College of William and Mary)5/27/26, 9:00 AM
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Justin Stevens (College of William and Mary)5/27/26, 10:15 AM
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Ryan Bodenstein (Thomas Jefferson National Accelerator Facility)5/27/26, 1:30 PM
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Dr Douglas Higinbotham (Jefferson Lab)5/27/26, 2:45 PM
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Justin Stevens (College of William and Mary)5/28/26, 9:00 AM
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Justin Stevens (College of William and Mary)5/28/26, 10:15 AM
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Ming Li5/28/26, 1:30 PM
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Ming Li5/28/26, 2:45 PM
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William Phelps (Christopher Newport University/Jefferson Lab)5/29/26, 9:00 AM
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William Phelps (Christopher Newport University/Jefferson Lab)5/29/26, 10:15 AM
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5/29/26, 1:00 PM
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Kostas Orginos (William and Mary / JLab)6/1/26, 9:00 AM
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Kostas Orginos (William and Mary / JLab)6/1/26, 10:15 AM
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Adam Freese (Jefferson Lab)6/1/26, 1:30 PM
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Adam Freese (Jefferson Lab)6/1/26, 2:45 PM
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Tyler Hague (JLab)6/1/26, 4:15 PM
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Kostas Orginos (William and Mary / JLab)6/2/26, 9:00 AM
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Kostas Orginos (William and Mary / JLab)6/2/26, 10:15 AM
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William Phelps (Christopher Newport University/Jefferson Lab)6/2/26, 1:30 PM
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William Phelps (Christopher Newport University/Jefferson Lab)6/2/26, 2:45 PM
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Zhite Yu (Brookhaven National Laboratory)6/3/26, 9:00 AM
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Zhite Yu (Brookhaven National Laboratory)6/3/26, 10:15 AM
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Adam Freese (Jefferson Lab)6/3/26, 1:30 PM
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Adam Freese (Jefferson Lab)6/3/26, 2:45 PM
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Krishna Kumar (University of Massachusetts, Amherst)6/4/26, 9:00 AM
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Krishna Kumar (University of Massachusetts, Amherst)6/4/26, 10:15 AM
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William Phelps (Christopher Newport University/Jefferson Lab)6/4/26, 1:30 PM
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William Phelps (Christopher Newport University/Jefferson Lab)6/4/26, 2:45 PM
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Krishna Kumar (University of Massachusetts, Amherst)6/5/26, 9:00 AM
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Krishna Kumar (University of Massachusetts, Amherst)6/5/26, 10:15 AM
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Zhite Yu (Brookhaven National Laboratory)6/5/26, 1:30 PM
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Zhite Yu (Brookhaven National Laboratory)6/5/26, 2:45 PM
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Charlotte Van Hulse (Free University Brussels)6/8/26, 9:00 AM
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Charlotte Van Hulse (Free University Brussels)6/8/26, 10:15 AM
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William Phelps (Christopher Newport University/Jefferson Lab)6/8/26, 1:30 PM
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William Phelps (Christopher Newport University/Jefferson Lab)6/8/26, 2:45 PM
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Marco Battaglieri (INFN-GE)6/9/26, 9:00 AM
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Marco Battaglieri (INFN-GE)6/9/26, 10:15 AM
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Charlotte Van Hulse (Free University Brussels)6/9/26, 1:30 PM
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Charlotte Van Hulse (Free University Brussels)6/9/26, 2:45 PM
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Benjamin Spaude (William & Mary)6/10/26, 9:00 AMSeminar
Over the past three decades at Jefferson Lab, there have been multiple experiments aimed at understanding the internal structure of nucleons. This is often done by measuring the electromagnetic form factors (FF) of these nucleons, at an increasingly higher momentum transfer squared, $Q^2$. The last of these experiments is GEp-V, which aims to measure the ratio of the electromagnetic form...
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Payton Arber (The George Washington University)6/10/26, 9:15 AMSeminar
When a meson decay violates isospin symmetry, it often signals electromagnetic or weak effects, since the strong interaction approximately conserves isospin. The decays $η→π^+π^−π^0$ and $η→3π^0$, however, are an important exception: they are hadronic decays driven primarily by strong isospin breaking from the up-down quark mass difference. Because the leading electromagnetic contribution is...
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Hunter Duggin (University of North Carolina)6/10/26, 9:30 AMSeminar
The strongly coupled regime of quantum many-body physics continues to pose a formidable challenge in modern physics. A premier system used to explore this realm is the unitary Fermi gas (UFG), which is characterized by an infinite s-wave scattering length that leads to universal, conformal physics. While the thermodynamic and hydrodynamic properties of the UFG have been extensively studied,...
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Esteban Molina (UMICH, UTFSM (previously))6/10/26, 9:45 AMSeminar
Hadronisation, a dynamic process where coloured objects transition into colourless bound states, is an important phenomenon tied to the understanding of strong interactions. Particularly, this process has a different behaviour in nuclear environments in comparison to vacuum, and this difference can be used to know more about the dynamics of the hadronising objects [1].
The hadronic...
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Sameer Jain (Catholic University of America)6/10/26, 10:00 AMSeminar
The pion, as the lightest meson and a quark--antiquark bound state, provides an important testing ground for understanding the transition between nonperturbative and perturbative Quantum Chromodynamics (QCD). The Jefferson Lab experiment E12-19-006 extends precision measurements of the pion form factor to $(Q^2 \approx 6~\mathrm{GeV}^2)$ and allows for measurements up to $(Q^2 \approx...
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Uditha Weerasinghe (Mississippi State University)6/10/26, 10:30 AMSeminar
Semi-Inclusive Deep Inelastic Scattering (SIDIS) provides a powerful tool for studying nucleon structure and hadronization. In particular, Λ hyperon production is sensitive to strange-quark dynamics through its self-analyzing weak decay and spin structure. This work investigates Λ electroproduction in both the current fragmentation region (CFR) and target fragmentation region (TFR) using...
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KAZUKI MAKINO6/10/26, 10:45 AMSeminar
Dihadron fragmentation functions describes the probability of observing a pair of hadrons fragmenting from a quark. It involves an invariant scale associated to the relative internal motion of the dihadron system $M_h^2$ in addition to the overall hard scale $Q^2$. Evolution in $M_h^2$ varies continuously from nonperturbative to perturbative region. We demonstrate how to evolve Dihadron...
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Aden Whitney (University of New Hampshire)6/10/26, 11:00 AMSeminar
In preparation for the tensor-polarized target experiment in Jefferson Lab's Hall C, running simulations to predict polarization spin-up and relaxation times would provide additional time-scale data beyond what we can get from experimentation alone. However, previous solutions to the spin-1 polarization rate change equations have made assumptions or errors that conflict with each other and our...
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Margherita Sagina (University of Pisa)6/10/26, 11:15 AMSeminar
In recent years, there has been a notable interest in investigating hypernuclear systems, which provide a unique laboratory for studying strong interactions in the strange quark sector. One of the main applications is related to the so-called "hyperon puzzle" in neutron stars, where theoretical models including hyperons predict maximum masses of \sim 1.5 M_{\odot} or less, in conflict with...
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Shannen Graham-Howard (UMass Amherst)6/10/26, 11:30 AMSeminar
A critical test for low-energy QCD is the decay of the neutral pion. Comparing this analytic prediction with measured data thus provides a valuable test for low energy QCD and symmetry breaking. The lifetime of the $\pi^0$ can be measured using exclusive $\pi^0$ photoproduction in the Coulomb field of a nucleus, referred to as the Primakoff effect. Using this technique, the PrimEx-I and II...
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William Phelps (Christopher Newport University/Jefferson Lab)6/10/26, 2:00 PM
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Mathieu Ronayette (CEA Saclay)6/11/26, 9:00 AMSeminar
Exclusive $\phi$ meson electroproduction is a promising channel to investigate the gluonic structure of the nucleon. The objective of this analysis is to extract the cross section for $\phi$ electroproduction on the neutron using CLAS12 RG-B data collected with a deuterium target. The $\phi$ meson is reconstructed through its $K^+K^-$ decay channel.
The analysis focuses on event selection,...
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Pramila Pokhrel (Catholic University of America)6/11/26, 9:15 AMSeminar
The deuteron, as the simplest neutron-proton bound state, provides a unique opportunity as a starting point to study short-range nuclear dynamics and nucleon-nucleon interactions at high momentum transfer without any complications which usually arise from heavy atoms. At large four-momentum transfer ($Q^2 \approx 4.5~\mathrm{GeV}^2$) and Bjorken $x > 1$, E12-10-003 experiment which was...
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Subhadip Pal on behalf of STAR Collaboration (Czech Technical University in Prague)6/11/26, 9:30 AMSeminar
Measurements of heavy flavor production in proton-proton ($p+p$) collisions are critical for testing perturbative QCD (pQCD) calculations and serve as an essential baseline for studying nuclear matter effects in heavy-ion collisions. In this presentation, we will report on the production of $D^0$ and $D^*$ mesons in $p+p$ collisions at a center-of-mass energy of $\sqrt{s} = 510$ GeV, utilizing...
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Addison Kovats-Bernat (William & Mary)6/11/26, 9:45 AMSeminar
In experimental hadron spectroscopy, we are concerned with indirect measurements of short-lived bound states, known as resonances. While many of these resonances can be described within the quark model, some have quantum numbers that are forbidden by a two- or three-quark system, meaning that they must have some other internal structure. Resonances themselves are complex poles of the...
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Rana Urek6/11/26, 10:15 AMSeminar
Over the past several decades, lattice quantum chromodynamics (LQCD) has developed into a powerful non-
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perturbative tool for extracting hadronic scattering amplitudes from first principles. The theoretical foundation
connecting finite-volume spectra to infinite-volume scattering observables was established by Luscher for two-body
elastic scattering and has since been extended to coupled... -
Yonggang Ren6/11/26, 10:30 AMSeminar
Two-particle matrix elements play a central role in understanding nucleon structure, for instance in determining the form factors of unstable resonances such as the ρ meson, which are nearly inaccessible experimentally. While their general features have been analyzed in various theoretical frameworks, a complete lattice-QCD determination of the corresponding amplitudes remains ongoing. Because...
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Addison Arcuri (Temple University)6/11/26, 10:45 AMSeminar
A summary of research on precision Møller polarimetry in Hall A at Jefferson Lab. Topics include determination of polarimeter DAQ dead times, accidental coincidence corrections, and other effects. The 0.40% uncertainty goal for polarimetry in the upcoming MOLLER experiment is more stringent than for previous Hall A Experiments, necessitating such improvements. Newly determined dead time...
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Aleksandr Bulgakov (University of Connecticut)6/11/26, 11:00 AMSeminar
Protons in the CLAS12 Forward Detector lose energy while passing through detector material, mainly through ionization, which shifts the reconstructed momentum away from the true value. This effect worsens momentum resolution and introduces biases into reconstructed kinematics, making energy loss corrections necessary for precision physics analysis.
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We study machine-learning-based approaches... -
Richard Brunner (Florida State University)6/11/26, 1:30 PMPoster
The GlueX experiment has accumulated the largest available data set for photoproduction studies, enabling detailed investigations of strong-interaction dynamics and searches for new resonant states. We present data collected at the Thomas Jefferson National Accelerator Facility using a linearly polarized photon beam, with a coherent peak near 9 GeV, incident on a liquid hydrogen target, and...
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Sailaja Muduganti (Old Dominion University)6/11/26, 1:39 PMPoster
A robust framework measurements of spin observables in electron–nucleon
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scattering were conducted at Jefferson Lab using upgraded CEBAF Large Ac-
ceptance Spectrometer(CLAS12) by Run group C (RGC). These experiments
involved the scattering of a polarized 11 GeV electron beam incident on lon-
gitudinally solid polarized nucleon targets located within CLAS12 spectrom-
eter in Hall B. The... -
Joachim Tsakanikas (University of Virginia)6/11/26, 1:48 PMPoster
Modern particle experiments require large, sophisticated machines and the expertise of many scientists and dedicated personnel. Coordinating machine performance with different, possibly competing goals for simultaneous experiments is a major challenge. To address this challenge, Jefferson Lab's Coupling Experiment to Accelerator Control (CEAC) project members will train a deep reinforcement...
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Xiang Zhang6/11/26, 1:57 PMPoster
The MOLLER experiment will make an ultra-high precision measurement of parity violation in electron-electron scattering as a sensitive search for new fundamental physics. Compton polarimetry provides a powerful non-invasive method to determine the polarization of high-energy electron beams with high precision. We present the design and development of a Compton polarimeter which will achieve a...
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Tyler Hellstern (Duke University)6/11/26, 2:06 PMPoster
Exclusive Vector Meson Production in the SIDIS kinematic Regime at Hall B of Jefferson Lab provides a unique opportunity to probe the 3D structure of the nucleon through Generalized Parton Distribution Functions (GPDs). Furthermore, by studying this production mechanism we can better understand the background to SIDIS measurements that lead to the same final state. In the channel...
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Julio Gil Gutierrez (University of Tennessee)6/11/26, 2:15 PMPoster
Semi-inclusive Deep Inelastic Scattering measurements have proven to be instrumental in providing access to flavor and transverse momentum distributions of the nucleon due to its ability to tag specific final-state hadrons in coincidence with the scattered electrons. So far, analyses in the SIDIS regime assume no nuclear dependence of the ratio $R=\sigma_L/\sigma_T$ of the longitudinal to...
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Amitabh Biswas (New Mexico State University)6/11/26, 2:24 PMPoster
One major goal of the Low Energy Recoil Tracker (ALERT) experimental program at the Thomas Jefferson National Accelerator Facility (JLab) is to study the fundamental structure of nucleons bound in a Helium-4 nucleus. This study explores the transition of strongly bound neutrons to the first excited state of the nucleon known as the Delta resonance. The excitation is induced by scattering...
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Muhammad Bedier6/11/26, 2:33 PMPoster
Color transparency (CT) is the suppression of final state interactions of a hadron propagating through nuclear medium when it is produced at small transverse size. The upcoming pion CT experiment plans to search for the onset of Color Transparency in pion in Hall C at Jefferson Lab. We plan to use the High Momentum Spectrometer (HMS) and the Super High Momentum Spectrometer (SHMS) in...
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Marco Filippini6/11/26, 2:42 PMPoster
The study of hadron spectroscopy and nucleon resonance structure has entered a new precision era with the 12 GeV upgrade at Jefferson Lab. The CLAS12 detector, a large-acceptance spectrometer in Hall B, provides efficient charged and neutral particle detection over a wide solid angle.
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We present a preliminary analysis of the exclusive quasi-real 2 pion photoproduction, from the... -
Yangli Zeng (William and Mary)6/11/26, 2:51 PMPoster
Timelike Compton Scattering (TCS), accessed through exclusive dilepton photoproduction $\gamma p \to p' \ell^+\ell^-$, is a key complementary channel to Deeply Virtual Compton Scattering (DVCS) for extracting generalized parton distributions (GPDs) from experiment. While DVCS primarily probes the imaginary part of Compton form factors, TCS provides independent access to the real part, and the...
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Nazmus Sayadat Ifat6/11/26, 3:00 PMPoster
The proton radius puzzle arises from the discrepancy between measurements of the proton charge radius obtained from muonic hydrogen spectroscopy and electron-based measurements, including electron-proton scattering and ordinary hydrogen spectroscopy. In 2010, the muonic hydrogen spectroscopy measurement reported a significantly smaller proton charge radius, differing by about 5σ from the...
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Nishadi Silva6/11/26, 3:09 PMPoster
Gluons are responsible for binding quarks inside protons and neutrons through the strong interaction (QCD). Understanding how gluons are arranged spatially provides insight into how nucleons interact and how nuclear matter is held together. The investigation of near-threshold J/ψ meson photoproduction is unique opportunity to probe the gluonic structure of the nucleon and light nuclei. In...
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Mrs Neidy Lorena Bucuru Rodriguez (PhD Student - IJCLab JLAB/EIC Group)6/11/26, 3:18 PMPoster
Understanding nucleon structure is important, as it is one of the building blocks of the visible universe. Usually, nucleon structure is studied using electromagnetic probes, such as electrons. At low-energy Quantum Chromo-Dynamics (QCD), the study is in a non-perturbative regime. This means that it is necessary to introduce structure functions to describe the nucleon's internal dynamics. Ones...
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Aoran Liu6/11/26, 3:27 PMPoster
Accurate reconstruction of neutral particles (neutrons and photons) is essential for a broad range of nuclear physics measurements. However, the current COATJAVA reconstruction software at CLAS12 produces an overabundance of false neutral clusters, necessitating conservative selection cuts that reduce reconstruction efficiency. To address this limitation, we present an AI-based clustering...
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Vidhura Vishvanath Nishshanka Arachchillage (Jefferson Lab SBS Collaboration)6/11/26, 3:36 PMPoster
The investigation of the spatial distributions of the charge and magnetism within nucleons remains a central problem in Hadronic Physics. The deviation from a point charge and point-like anomalous magnetic moment is characterized by introducing measurable observables as Form Factors (FFs). A clear discrepancy exists between FF ratios obtained using Rosenbluth separation and polarization...
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Yuan Li (Shandong University)6/11/26, 3:45 PMPoster
The proton charge radius ($r_p$) is a fundamental quantity for understanding QCD and is essential for high-precision QED calculations. It is typically measured using hydrogen spectroscopy or elastic electron-proton (e-p) scattering. Since 2010, there has been the so-called “proton charge radius puzzle,” which arose from the results of muonic hydrogen spectroscopy. To further address the...
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William Phelps (Christopher Newport University/Jefferson Lab)6/12/26, 8:30 AM
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