Measurement of the Proton Asymmetry Parameter C in Neutron Beta Decay

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dc.creatorSchumann, M.
dc.creatorKreuz, M.
dc.creatorDeissenroth, M.
dc.creatorGlueck, F.
dc.creatorKrempel, J.
dc.creatorMaerkisch, B.
dc.creatorMund, D.
dc.creatorPetoukhov, A.
dc.creatorSoldner, T.
dc.creatorAbele, H.
dc.date2007-12-14
dc.date.accessioned2026-07-07T11:39:26Z
dc.date.available2026-07-07T11:39:26Z
dc.descriptionThe proton asymmetry parameter C in neutron decay describes the correlation between neutron spin and proton momentum. In this Letter, the first measurement of this quantity is presented. The result C=-0.2377(26) agrees with the Standard Model expectation. The coefficient C provides an additional parameter for new and improved Standard Model tests. From a differential analysis of the same data (assuming the Standard Model), we obtain lambda=-1.275(16) as ratio of axial-vector and vector coupling constant.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0712.2442
dc.identifierhttp://arxiv.org/abs/0712.2442
dc.identifierPhys.Rev.Lett.100:151801,2008
dc.identifierdoi:10.1103/PhysRevLett.100.151801
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199914
dc.subjectHigh Energy Physics - Phenomenology
dc.titleMeasurement of the Proton Asymmetry Parameter C in Neutron Beta Decay
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