Pinning down the kaon form factors in K^+ -> mu^+ nu_mu gamma decay

dc.creatorBezrukov, F. L.
dc.creatorGorbunov, D. S.
dc.creatorKudenko, Yu. G.
dc.date2003-02-13
dc.date2003-05-27
dc.date.accessioned2026-07-07T03:49:10Z
dc.date.available2026-07-07T03:49:10Z
dc.descriptionWe find that the normal muon polarization in the decay K->mu nu_mu gamma is very sensitive to the values of the kaon vector F_V and axial-vector F_A form factors. It is shown that the ongoing KEK-E246 experiment can definitely determine the signs of the sum of the form factors if their difference is fixed from other considerations. This method can also verify the form factor values and signs obtained from the K^+ -> l^+ nu_l e^+ e^- decays. A new experiment with sensitivity to the normal and transverse muon polarizations of about 10^-4 will provide a unique possibility to determine the F_V and F_A values with a few percent accuracy.
dc.descriptionrevtex, 5 pages, 2 figures. Minor corrections made for the journal version of the paper
dc.identifierhttps://arxiv.org/abs/hep-ph/0302106
dc.identifierhttp://arxiv.org/abs/hep-ph/0302106
dc.identifierPhys.Rev. D67 (2003) 091503
dc.identifierdoi:10.1103/PhysRevD.67.091503
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/42301
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titlePinning down the kaon form factors in K^+ -> mu^+ nu_mu gamma decay
dc.typetext

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