Publication Type
Conference Paper
Journal Name
EPJ Web of Conferences
Publication Date
Page Number
05001
Volume
303
Conference Name
International Conference on Meson-Nucleon Physics and the Structure of the Nucleon (MENU 2023)
Conference Location
Mainz, Germany
Conference Sponsor
Johannes Gutenberg Universitat Mainz, Helmholtz-Institut Mainz, PRiSMA+, STRONG 2020, Research Unit FOR 5327, European Physics Journals
Conference Date
-
Abstract
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.
