Electroweak Measurements of Neutron Densities in PREX and CREX at JLab, USA

Conference · Mon Aug 01 04:00:00 EDT 2016

OSTI ID:1332090

Michaels, Robert W. ^[1]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Measurement of the parity-violating electron scattering asymmetry from $${}^{208}$$Pb has demonstrated a new opportunity at Jefferson Lab to measure the weak charge distribution and hence pin down the neutron radius in nuclei in a relatively clean and model-independent way. This is because the Z boson of the weak interaction couples primarily to neutrons. We will describe the PREX and CREX experiments on $${}^{208}$$Pb and $${}^{48}$$Ca respectively. PREX-I ran in 2010, and CREX and a second run of PREX are currently in preparation.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1332090
• Report Number(s): JLAB-PHY-15-2153; DOE/OR/23177-3585; arXiv:1510.04592
• Country of Publication: United States
• Language: English