Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session C11: Minisymposium: Connections Between Nuclear PDFs and Nuclear Structure I
7:00 PM–9:30 PM,
Tuesday, November 28, 2023
Hilton Waikoloa Village
Room: Kings 1
Chair: Douglas Higinbotham, Jefferson Lab
Abstract: C11.00009 : First Measurement of the Flavor Dependence of Nuclear PDF Modification Using Parity-Violating Deep Inelastic Scattering
9:15 PM–9:30 PM
Presenter:
Rakitha S Beminiwattha
(Louisiana Tech University)
Author:
Rakitha S Beminiwattha
(Louisiana Tech University)
Collaboration:
SoLID Collaboration
We propose a clean and precise measurement of the flavor dependence of the EMC effect using parity-violating deep inelastic scattering on a 48Ca target. While the EMC effect has been known for almost 40 years, there are essentially no reliable experimental constraints on its flavor dependence. The proposed measurement will provide an extremely sensitive test for flavor dependence in the modification of nuclear pdfs for neutron-rich nuclei. A measurement of the flavor dependence will provide new and vital information and help to explain nucleon modification at the quark level. In addition to helping understand the origin of the EMC effect, a flavor-dependent nuclear pdf modification could have a significant impact on a range of processes, including neutrino-nucleus scattering, nuclear Drell-Yan processes, or e-A observables at the Electron-Ion Collider.
The parity-violating asymmetry (APV) from 48Ca using an 11 GeV beam at 80 μA will be measured using the SoLID detector in its PVDIS configuration. The APV provides a particularly sensitive method to obtain flavor-dependent effects in nuclear modification as it is a ratio of the weak-to-electromagnetic interactions, which gives access to ratios of quark distributions. In 68 days of data taking, we will reach 0.7-1.3 % statistical precision for 0.2<x<0.7 with 0.6-0.7 % systematic uncertainties. The proposal has received conditional approval from JLab PAC50 in 2022.
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