High statistic measurement of the K- -> pi0 e- nu decay form-factors

Simple item page
dc.creatorYushchenko, O. P.
dc.creatorAkimenko, S. A.
dc.creatorBritvich, G. I.
dc.creatorDatsko, K. V.
dc.creatorFilin, A. P.
dc.creatorInyakin, A. V.
dc.creatorKonstantinov, A. S.
dc.creatorKonstantinov, V. F.
dc.creatorKorolkov, I. Y.
dc.creatorKhmelnikov, V. A.
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.creatorUvarov, V. A.
dc.creatorBolotov, V. N.
dc.creatorLaptev, S. V.
dc.creatorPolyarush, A. Yu.
dc.date2004-04-23
dc.date.accessioned2026-07-07T10:28:25Z
dc.date.available2026-07-07T10:28:25Z
dc.descriptionThe decay K- -> pi0 e- nu is studied using in-flight decays detected with the ISTRA+ spectrometer. About 920K events are collected for the analysis. The lambda+ slope parameter of the decay form-factor f+(t) in the linear approximation (average slope) is measured: lambda+(lin)= 0.02774 +- 0.00047(stat) +- 0.00032(syst). The quadratic contribution to the form-factor was estimated to be lambda'+ = 0.00084 +- 0.00027(stat) +- 0.00031(syst). The linear slope, which has a meaning of df+(t)/dt|_{t=0} for this fit, is lambda+ = 0.02324 +- 0.00152(stat) +- 0.00032(syst). The limits on possible tensor and scalar couplings are derived: f_{T}/f_{+}(0)=-0.012 +- 0.021(stat) +- 0.011$(syst), f_{S}/f_{+}(0)=-0.0037^{+0.0066}_{-0.0056}(stat) +- 0.0041(syst).
dc.description11 pages, 8 figures. Accepted by Phys.Lett. B
dc.identifierhttps://arxiv.org/abs/hep-ex/0404030
dc.identifierhttp://arxiv.org/abs/hep-ex/0404030
dc.identifierPhys.Lett.B589:111-117,2004
dc.identifierdoi:10.1016/j.physletb.2004.03.069
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177438
dc.subjectHigh Energy Physics - Experiment
dc.titleHigh statistic measurement of the K- -> pi0 e- nu decay form-factors
dc.typetext

Files

Collections

arXiv