-
8/5/22, 9:00 AM
-
Farah Afzal, Jackson Pybus (MIT)8/5/22, 9:45 AM
-
Lawrence Weinstein8/5/22, 10:00 AM
-
Evangeline Downie (George Washington University)8/5/22, 10:30 AM
-
Bill Briscoe (GWU)8/5/22, 11:30 AM
-
Reinhard Beck (University of Bonn)8/5/22, 12:00 PM
-
Dr Douglas Higinbotham (Jefferson Lab)8/5/22, 1:30 PM
-
Kalyan Allada8/5/22, 2:00 PM
-
8/5/22, 2:30 PM
-
Dr Douglas Higinbotham (Jefferson Lab)8/5/22, 3:00 PM
-
8/5/22, 4:00 PM
-
Jingyi Zhou (Duke University)8/5/22, 4:20 PM
High precision muonic deuterium spectroscopic measurements found a significantly smaller (7$\sigma$) deuteron charge radius compared to the CODATA recommended value, creating the ``deuteron charge radius puzzle''. In order to investigate this, the DRad experiment (Jefferson Lab PR12-20-006) was proposed to measure the $e-d$ elastic scattering cross section in a very low momentum transfer...
Go to contribution page -
Tyler Kutz (MIT/GW)8/5/22, 4:40 PM
Two photon exchange (TPE) and the larger class of hadronic box diagrams can be a significant radiative correction to lepton scattering and beta decay measurements. Notably, it has been hypothesized that TPE could be responsible for the proton form factor ratio discrepancy. However, these diagrams remain difficult to calculate without large uncertainty and model-dependence, and theoretical...
Go to contribution page -
Niklas Keil (JGU Mainz)8/5/22, 5:00 PM
We calculate the leading-order QED radiative corrections to the process e^− p→e^− p l^− l^+ in the soft-photon approximation, in two different energy regimes which are of relevance to extract nucleon structure information. In the low-energy region, this process is studied to better constrain the hadronic corrections to precision muonic hydrogen spectroscopy. In the high-energy region, the...
Go to contribution page -
Max Lellmann (Johannes Gutenberg-Universität Mainz)8/5/22, 5:20 PM
Despite being one of the most precisely studied observables in particle physics, there remains a discrepancy of 4.2$\sigma$ between the average value of the most recent direct measurements and the prediction within the Standard Model of the anomalous magnetic moment of the muon $a_\mu= (g−2)_\mu/2$. The precision of the prediction is limited by the knowledge of the hadronic contributions,...
Go to contribution page -
Ms Yasemin Schelhaas (JGU Mainz)8/5/22, 5:40 PM
The anomalous magnetic moment of the muon $a_\mu=(g_\mu-2)/2$ is one of the most precisely measured variables in modern physics. However, there is a discrepancy of $4.2$ standard deviations between the Standard Model (SM) prediction and the experimental average of the latest direct measurements at BNL and FNAL, known as the Muon $(g-2)$-puzzle. For the SM prediction the main uncertainty arises...
Go to contribution page -
Cameron Cotton (University of Virginia)8/6/22, 9:00 AM
Since the discovery of the EMC Effect nearly 40 years ago, there has been significant theoretical and experimental effort dedicated to understanding its underlying cause. However, to this day, the EMC Effect remains one of the great unsolved mysteries in nuclear and particle physics. Questions such as whether the EMC Effect implies that nucleon form factors are modified in nuclei or if the...
Go to contribution page -
Sara Ratliff8/6/22, 9:20 AM
The EMC effect, the observation that Deep Inelastic Scattering (DIS) from bound nucleons differs significantly from that on free nucleons, has puzzled nuclear physicists for nearly forty years. A potential cause for this phenomenon is the formation of short-range correlations (SRCs) between nucleons within a nucleus, which can lead to significant changes in partonic structure. This hypothesis...
Go to contribution page -
Erin Seroka (The George Washington University)8/6/22, 9:40 AM
Recent data mining analyses from the CLAS experiment at Jefferson Lab have enabled detection of neutrons from the hard break up of Short-Range Correlated (SRC) pairs, leading to the observation that protons are disproportionately represented in high momentum states in neutron-rich nuclei. Here we seek to determine whether neutrons speed up in proton-rich nuclei by studying the proton-rich...
Go to contribution page -
Andrew Denniston (MIT)8/6/22, 10:00 AM
Nearly all measurements of SRC are done at high xB. Using new analysis methods and semi-inclusive data, we can extend our kinematic range to low xB.
Go to contribution page -
Phoebe Sharp (George Washington University)8/6/22, 10:20 AM
Short Range Correlations (SRCs) are a feature of the internal structure of all
Go to contribution page
types of nuclei. Characterized by their relative and center of mass momenta,
SRC pairs have been well studied with quasi-elastic electron scattering
experiments. The reliance on electron scattering however, makes it difficult
to assess the influence of reaction effects and final state interactions on
what... -
Hang Qi (MIT)8/6/22, 10:40 AM
Short Range Correlations (SRC) are pairs of strong interacting nucleons with high relative momentum and low center of mass momentum compared to the Fermi momentum. The R3B S522 experiment run in 2022 at GSI, Germany and studied SRCs in the 12C and 16C isotopes, via the scattering of high energy ion beams off proton target in inverse kinematics. Using an exclusive measurement, we study for the...
Go to contribution page -
Provakar Datta (University of Connecticut)8/6/22, 11:30 AM
Nucleon elastic form factors help us understand the nucleon structure by probing their four-current distribution. But very little is known of neutron's magnetic form factor, $G^{n}_{M}$, for $Q^2 > 4$ $(\text{GeV}/\text{c})^2$. To shed some light in this area, an experiment, SBS-$G_M^n$ (E12-09-019), has run in Jefferson Lab's experimental Hall A from October 2021 to February 2022 and recorded...
Go to contribution page -
Sebastian Seeds (UConn)8/6/22, 11:50 AM
During the first experiment (GMn) using the Super BigBite Spectrometer in experimental Hall A at Jefferson Lab, elastic proton and neutron cross sections were measured using a high timing and position resolution hadron calorimeter as the hadron arm of the spectrometer. The design of the calorimeter emphasizes precision timing and position measurements over energy resolution expecting a clean...
Go to contribution page -
Maria Satnik (William & Mary)8/6/22, 12:10 PM
The GRINCH is a new heavy gas chereknov threshold detector developed for the Super Bigbite (SBS) program in Hall A in Jefferson Lab. The purpose of the GRINCH is to distinguish between pions and electrons during electromagnetic form factor scattering experiments in the SBS program. Consisting of 510 1-in photomultipier tubes and filled with $C_4 F_8 O$ heavy gas, this novel detector is...
Go to contribution page -
Sebastian Ciupka (University of Bonn)8/6/22, 1:30 PM
It is experimentally and theoretically challenging to determine the exact number of exited nuclear states and their properties, since the short lifetime of these exited states leads to strongly overlapping resonances. Using a polarized beam, a polarized target or using the polarization of the recoil nucleon helps to measure single or double polarization observables, finding an unambiguous...
Go to contribution page -
Nicolas Jermann (University of Basel)8/6/22, 1:50 PM
The excitation spectrum of the nucleon is an important testing ground for quantum chromodynamics in the regime where it cannot be treated perturbatively. During the last two decades much progress has been made on the theory side, e.g. lattice gauge methods, and in experiments, particularly using energy tagged photon beams at electron accelerators, which has now reached a state where not only...
Go to contribution page -
Brandon Tumeo (University of South Carolina)8/6/22, 2:10 PM
Experimental observables of Λ-deuteron (Λd) elastic scattering are expected to provide unique and independent constraints on several poorly-known dynamical parameters of the hyperon-nucleon interaction, such as the ΛN spin-triplet scattering length and the ΛNN three-body force. Currently, there are no Λd experimental data. In this work, we present a feasibility study of Λd elastic scattering...
Go to contribution page -
Caleb Fogler8/6/22, 2:30 PM
Neutrino scattering experiments rely on neutrino event generators such as GENIE. Theoretical models used by GENIE have high uncertainties, so we will compare events from e-GENIE, an electron event mode of GENIE, with experimental electron scattering data. The goal of this project is to measure the deuterium pion electro-production cross sections in CLAS12. We will compare these cross...
Go to contribution page -
Bo Yu (Duke University)8/6/22, 2:50 PM
The φ meson is unique to study QCD in non-perturbative region due to the
Go to contribution page
almost pure strange content. The SRC/CT experiment with GlueX detector
offers a good opportunity to study the its photo-production at 9 GeV, where
the data was limited previously. I will introduce the physics motivation,
experiment configurations and preliminary analysis results of this topic. -
Ankush Sharma (Reseach Scholar)8/6/22, 3:10 PM
Tetraquark states are classified using the $SU(6)_{sf}$ spin-flavor symmetry and Young tableau technique. Further, by using the extension of Gursey-Radicati mass formula, masses of tetraquark states are predicted upto good level of accuracy. Also, Decay channels and decay widths of tetraquark states are calculated and found to be in good agreement with the experimental and available theoretical data.
Go to contribution page -
Tim Kolar8/6/22, 4:00 PM
Knowledge of whether the proton’s electromagnetic (EM) structure changes when it is bound inside an atomic nucleus is important for a better understanding of nuclear matter and its behavior. If such change is present it is expected to be relatively small and therefore difficult to experimentally determine[1,2].
Go to contribution page
A measurement of the polarization transfer in A(⃗e,e′p⃗) reaction is a proven... -
Simone Venturini (University of Pavia)8/6/22, 4:20 PM
Pion parton distribution functions have been achieving most interest among hadronic physicists in this years; nevertheless there are still few models that use a light-front wave function (LFWF) approach for the pion.
Go to contribution page
Our theoretical model is based on the pion-state decomposition in terms of different Fock state components. In particular, we focused on the lowest number of partons constituting... -
Jennifer Rittenhouse West (Berkeley Lab and the EIC Center at Jefferson Lab)8/6/22, 4:40 PM
-
Devi Adhikari (Virginia Tech)8/6/22, 5:00 PM
The MOLLER experiment purposes to carry out a precise measurement of the parity-violating asymmetry from electron-electron scattering in Hall A at Jefferson lab. The measured asymmetry will be used to extract the weak charge of the electron with unprecedented precision, which in turn results in an ultra-precise determination of the weak mixing angle. The measurement precision allows us to...
Go to contribution page -
8/6/22, 6:30 PM
Choose timezone
Your profile timezone: