Search for the decay K+ to pi+ gamma gamma in the pi+ momentum region P>213 MeV/c

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dc.creatorE949 Collaboration
dc.creatorArtamonov, A. V.
dc.date2005-05-24
dc.date2005-07-26
dc.date.accessioned2026-07-07T11:26:32Z
dc.date.available2026-07-07T11:26:32Z
dc.descriptionWe have searched for the K+ to pi+ gamma gamma decay in the kinematic region with pi+ momentum close to the end point. No events were observed, and the 90% confidence-level upper limit on the partial branching ratio was obtained, B(K+ to pi+ gamma gamma, P>213 MeV/c) < 8.3 x 10-9 under the assumption of chiral perturbation theory including next-to-leading order ``unitarity'' corrections. The same data were used to determine an upper limit on the K+ to pi+ gamma branching ratio of 2.3 x 10-9 at the 90% confidence level.
dc.description15 pages, 3 figures; no change in the results, accepted for publication in Physics Letters B
dc.identifierhttps://arxiv.org/abs/hep-ex/0505069
dc.identifierhttp://arxiv.org/abs/hep-ex/0505069
dc.identifierPhys.Lett.B623:192-199,2005
dc.identifierdoi:10.1016/j.physletb.2005.07.057
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195855
dc.subjectHigh Energy Physics - Experiment
dc.titleSearch for the decay K+ to pi+ gamma gamma in the pi+ momentum region P>213 MeV/c
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