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High statistic study of the K- -> pi0 mu- nu decay | | O.P. Yushchenko
; S.A. Akimenko
; K.S. Belous
; G.I. Britvich
; I.G. Britvich
; K.V. Datsko
; A.P. Filin
; A.V. Inyakin
; A.S. Konstantinov
; V.F. Konstantinov
; I.Y. Korolkov
; V.A. Khmelnikov
; V.M. Leontiev
; V.P. Novikov
; V.F. Obraztsov
; V.A. Polyakov
; V.I. Romanovsky
; V.M. Ronjin
; V.I. Shelikhov
; N.E. Smirnov
; O.G. Tchikilev
; V.A.Uvarov
; V.N. Bolotov
; S.V. Laptev
; A.R. Pastsjak
; A.Yu. Polyarush
; | | Date: |
30 Nov 2003 | | Journal: | Phys.Lett. B581 (2004) 31-38 | | Subject: | hep-ex | | Affiliation: | Institute for High Energy Physics, Protvino, Russia), V.N. Bolotov, S.V. Laptev, A.R. Pastsjak, A.Yu. Polyarush (Institute for Nuclear Research, Moscow, Russia | | Abstract: | The decay K- -> pi0 mu- nu has been studied using in-flight decays detected with the "ISTRA+" spectrometer. About 540K events were collected for the analysis. The lambda+ and lambda0 slope parameters of the decay form-factors f+(t), f0(t) have been measured : lambda+ = 0.0277+-0.0013 (stat)+-0.0009 (syst), lambda0 = 0.0183+-0.0011(stat)+-0.0006(syst), and d(lambda0)/d(lambda+)=-0.348. The limits on the possible tensor and scalar couplings have been derived: fT/f+(0)=-0.0007 +- 0.0071, fS/f+(0)=0.0017 +- 0.0014. No visible non-linearity in the form-factors have been observed. | | Source: | arXiv, hep-ex/0312004 | | Services: | Forum | Review | PDF | Favorites | |
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