Published March 25, 2013
| Published + Submitted
Journal Article
Open
Precision measurement of the neutron β-decay asymmetry
Abstract
A new measurement of the neutron β-decay asymmetry A_0 has been carried out by the UCNA Collaboration using polarized ultracold neutrons (UCNs) from the solid deuterium UCN source at the Los Alamos Neutron Science Center. Improvements in the experiment have led to reductions in both statistical and systematic uncertainties leading to A_0=−0.11954(55)_(stat)(98)_(syst), corresponding to the ratio of axial-vector to vector coupling λ ≡ g_A/g_V = −1.2756(30).
Additional Information
© 2013 American Physical Society. Received 13 December 2012; revised manuscript received 19 February 2013; published 25 March 2013. This work was supported in part by the US Department of Energy, Office of Nuclear Physics (DE-FG02-08ER41557), National Science Foundation (NSF-0855538, NSF-1205977, NSF-0653222), and the Los Alamos National Laboratory LDRD program. We gratefully acknowledge the support of LANSCE and AOT divisions of Los Alamos National Laboratory.Attached Files
Published - PhysRevC.87.032501.pdf
Submitted - 1210.7048v3.pdf
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Additional details
- Eprint ID
- 38138
- Resolver ID
- CaltechAUTHORS:20130426-140917837
- Department of Energy (DOE) Office of Nuclear Physics
- DE-FG02-08ER41557
- NSF
- NSF-0855538
- NSF
- NSF-1205977
- NSF
- NSF-0653222
- Los Alamos National Laboratory LDRD Program
- Los Alamos National Laboratory LANSCE Division
- Los Alamos National Laboratory AOT Division
- Created
-
2013-04-26Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field