Journal
PHYSICS LETTERS B
Volume 619, Issue 3-4, Pages 263-270Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2005.05.074
Keywords
beta decay; weak interaction; P violation; right handed currents
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We have measured the antineutrino asymmetry B in neutron beta decay, i.e., the correlation of the neutron spin and the antineutrino momentum, with a new method. Our result is B = 0.967 +/- 0.006(stat) +/- 0.010(syst) = 0.967 +/- 0.012. Statistical and systematic uncertainty can be considerably reduced in future experiments. (c) 2005 Elsevier B.V. All rights reserved.
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