Experimental study of direct photon emission in K- --> pi- pi0 gamma decay using ISTRA+ detector

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dc.creatorUvarov, V. A.
dc.creatorAkimenko, S. A.
dc.creatorBritvich, G. I.
dc.creatorDatsko, K. V.
dc.creatorFilin, A. P.
dc.creatorInyakin, A. V.
dc.creatorKhmelnikov, V. A.
dc.creatorKonstantinov, A. S.
dc.creatorKonstantinov, V. F.
dc.creatorKorolkov, I. Y.
dc.creatorLeontiev, V. M.
dc.creatorNovikov, V. P.
dc.creatorObraztsov, V. F.
dc.creatorPolyakov, V. A.
dc.creatorRomanovsky, V. I.
dc.creatorRonjin, V. M.
dc.creatorShelikhov, V. I.
dc.creatorSmirnov, N. E.
dc.creatorTchikilev, O. G.
dc.creatorYushchenko, O. P.
dc.creatorBolotov, V. N.
dc.creatorDuk, V. A.
dc.creatorLaptev, S. V.
dc.creatorPolyarush, A. Yu.
dc.date2004-10-19
dc.date.accessioned2026-07-07T10:28:29Z
dc.date.available2026-07-07T10:28:29Z
dc.descriptionThe branching ratio in the charged-pion kinetic energy region of 55 to 90 MeV for the direct photon emission in the K- --> pi- pi0 gamma decay has been measured using in-flight decays detected with the ISTRA+ setup operating in the 25 GeV/c negative secondary beam of the U-70 PS. The value Br(DE)=[0.37+-0.39(stat)+-0.10(syst)]*10^(-5) obtained from the analysis of 930 completely reconstructed events is consistent with the average value of two stopped-kaon experiments, but it differs by 2.5 standard deviations from the average value of three in-flight-kaon experiments. The result is also compared with recent theoretical predictions.
dc.description13 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/hep-ex/0410049
dc.identifierhttp://arxiv.org/abs/hep-ex/0410049
dc.identifierPhys.Atom.Nucl.69:26-34,2006
dc.identifierdoi:10.1134/S1063778806010042
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177465
dc.subjectHigh Energy Physics - Experiment
dc.titleExperimental study of direct photon emission in K- --> pi- pi0 gamma decay using ISTRA+ detector
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