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Determination of the Axial-Vector Weak Coupling Constant with Ultracold Neutrons

Liu, J. and Mendenhall, M. P. and Carr, R. and Filippone, B. W. and Hickerson, K. P. and Pérez Galván, A. and Russell, R. (2010) Determination of the Axial-Vector Weak Coupling Constant with Ultracold Neutrons. Physical Review Letters, 105 (18). Art. No.181803. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:20101210-113241656

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Abstract

A precise measurement of the neutron decay β asymmetry A_0 has been carried out using polarized ultracold neutrons from the pulsed spallation ultracold neutron source at the Los Alamos Neutron Science Center. Combining data obtained in 2008 and 2009, we report A_0 = -0.119 66 ± 0.00089_(-0.001 40)^(+0.001 23), from which we determine the ratio of the axial-vector to vector weak coupling of the nucleon g_(A)/g_(V) = -1.275 90_(-0.004 45)^(+0.004 09).


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevLett.105.181803DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevLett.105.181803PublisherUNSPECIFIED
Additional Information:© 2010 American Physical Society. Received 21 July 2010; published 29 October 2010; corrected 9 November 2010. This work was supported in part by the Department of Energy Office of Nuclear Physics, National Science Foundation (NSF-0555674, NSF-0855538, NSF-0653222), and the Los Alamos National Laboratory LDRD program. We gratefully acknowledge the support of the LANSCE and AOT divisions of Los Alamos National Lab.
Funders:
Funding AgencyGrant Number
Department of Energy Office of Nuclear PhysicsUNSPECIFIED
NSFNSF-0555674
NSFNSF-0855538
NSFNSF- 0653222
Los Alamos National Laboratory LDRD (Laboratory Directed Research and Development) programUNSPECIFIED
LANSCE (Los Alamos Neutron Science Center) division of Los Alamos National Laboratory UNSPECIFIED
AOT (Accelerator and Operations Technology) division of Los Alamos National Laboratory UNSPECIFIED
Record Number:CaltechAUTHORS:20101210-113241656
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20101210-113241656
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21296
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:11 Dec 2010 00:46
Last Modified:26 Dec 2012 12:44

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