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arxiv: 0706.3788 · v2 · submitted 2007-06-26 · ✦ hep-ph

Measurement of the Neutrino Asymmetry Parameter B in Neutron Decay

M. Schumann , T. Soldner , M. Deissenroth , F. Glueck , J. Krempel , M. Kreuz , B. Maerkisch , D. Mund
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A. Petoukhov H. Abele
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classification ✦ hep-ph
keywords neutrondecayasymmetrymeasurementneutrinoparameteragreesangular
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A new measurement of the neutrino asymmetry parameter B in neutron decay, the angular correlation between neutron spin and anti-neutrino momentum, is presented. The result, B=0.9802(50), agrees with the Standard Model expectation and earlier measurements, and permits improved tests on ``new physics'' in neutron decay.

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