Published October 29, 2010
| Published
Journal Article
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Determination of the Axial-Vector Weak Coupling Constant with Ultracold Neutrons
Chicago
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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).
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.Attached Files
Published - Liu2010p11982Phys_Rev_Lett.pdf
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Liu2010p11982Phys_Rev_Lett.pdf
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Additional details
- Eprint ID
- 21296
- Resolver ID
- CaltechAUTHORS:20101210-113241656
- Department of Energy Office of Nuclear Physics
- NSF
- NSF-0555674
- NSF
- NSF-0855538
- NSF
- NSF- 0653222
- Los Alamos National Laboratory LDRD (Laboratory Directed Research and Development) program
- LANSCE (Los Alamos Neutron Science Center) division of Los Alamos National Laboratory
- AOT (Accelerator and Operations Technology) division of Los Alamos National Laboratory
- Created
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2010-12-11Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field