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Measuring Neutron Beta Decay “A” Parameter Using Ultracold Neutrons

Liu, Jianglai (2009) Measuring Neutron Beta Decay “A” Parameter Using Ultracold Neutrons. In: 10th Conference on the Intersections of Particle and Nuclear Physics. AIP Conference Proceedings. No.1182. American Institute of Physics , Melville, NY, pp. 674-677. ISBN 978-0-7354-0723-7.

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The UCNA experiment is designed to measure the neutron decay beta asymmetry (the “A” parameter) to very high precision (<0.5%), using the ultracold neutron (UCN) source at the Los Alamos National Lab. After a successful commissioning run in 2007, data were taken in 2008 which will lead to a 1% measurement of A. In this talk, I will discuss major improvements we made in 2008, and report the status of data analysis.

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Additional Information:© 2009 American Institute of Physics. Published online 30 December 2009. The author would like to acknowledge the contributions of the members of the UCNA collaboration. The UCNA experiment is supported in part by the Department of Energy, National Science Foundation, and Los Alamos National Laboratory LDRD.
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
Los Alamos National LaboratoryUNSPECIFIED
Subject Keywords:UCN, neutron beta decay, A parameter
Series Name:AIP Conference Proceedings
Issue or Number:1182
Classification Code:PACS: 12.15Ff; 12.15Hh,13.30Ce, 23.40Bw
Record Number:CaltechAUTHORS:20160511-131915438
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Official Citation:Measuring Neutron Beta Decay “A” Parameter Using Ultracold Neutrons Liu, Jianglai and UCNA Collaboration, AIP Conference Proceedings, 1182, 674-677 (2009), DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66996
Deposited By: Tony Diaz
Deposited On:11 May 2016 21:27
Last Modified:03 Oct 2019 10:02

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