Study of neutron beta decay with the Nab experiment

Conference · Sun Sep 01 04:00:00 EDT 2024

OSTI ID:2455094

Baessler, Stefan ^[1]; Broussard, Leah ^[2]; Gonzalez, Frank ^[2]; Mathews, David ^[2]; Mueller, Paul ^[2]; Ramsey, John Clinton ^[2]; Saunders, Alexander ^[2]; Schreyer, Wolfgang ^[2]

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1. University of Virginia, Charlottesville
2. ORNL

The current three sigma tension in the unitarity test of the Cabbibo-Kobayashi-Maskawa (CKM) matrix is a notable problem with the Standard Model of elementary particle physics. A long-standing goal of the study of free neutron beta decay is to better determine the CKM element Vud through measurements of the neutron lifetime and a decay correlation parameter. The Nab collaboration intends to measure a, the neutrino-electron correlation, with accuracy sufficient for a competitive evaluation of Vud based on neutron decay data alone. This paper gives a status report and an outlook.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 2455094
• Country of Publication: United States
• Language: English