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Precision measurement of the neutron β-decay asymmetry

Mendenhall, M. P. and Carr, R. and Filippone, B. W. and Hickerson, K. P. and Liu, J. L. and Pérez Galván, A. and Picker, R. (2013) Precision measurement of the neutron β-decay asymmetry. Physical Review C, 87 (3). Art. No. 032501. ISSN 0556-2813. https://resolver.caltech.edu/CaltechAUTHORS:20130426-140917837

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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).


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevC.87.032501DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevC.87.032501PublisherUNSPECIFIED
http://prc.aps.org/abstract/PRC/v87/i3/e032501PublisherUNSPECIFIED
http://arxiv.org/abs/1210.7048arXivUNSPECIFIED
ORCID:
AuthorORCID
Filippone, B. W.0000-0002-2618-2688
Hickerson, K. P.0000-0001-7647-119X
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.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE) Office of Nuclear PhysicsDE-FG02-08ER41557
NSFNSF-0855538
NSFNSF-1205977
NSFNSF-0653222
Los Alamos National Laboratory LDRD ProgramUNSPECIFIED
Los Alamos National Laboratory LANSCE DivisionUNSPECIFIED
Los Alamos National Laboratory AOT DivisionUNSPECIFIED
Issue or Number:3
Record Number:CaltechAUTHORS:20130426-140917837
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130426-140917837
Official Citation:Precision measurement of the neutron β-decay asymmetry M. P. Mendenhall et al. (UCNA Collaboration) Published 25 March 2013 (6 pages) 032501
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:38138
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:26 Apr 2013 21:37
Last Modified:09 Mar 2020 13:18

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