A Measurement of Γ (D+ → Φμ+ν) /Γ (D+ → Φπ+)

P.L. Frabetti, H.W.K. Cheung,J.P. Cumalat,C. Dallapiccola,J.F. Ginkel, S.V. Greene,W.E. Johns,M.S. Nehring,J.N. Butler,S. Cihangir,I. Gaines,P.H. Garbincius,L. Garren,S.A. Gourlay,D.J. Harding,P. Kasper,A. Kreymer,P. Lebrun,S. Shukla,M. Vittone,S. Bianco,F.L. Fabbri,S. Sarwar,A. Zallo,R. Culbertson,R.W. Gardner,R. Greene,J. Wiss,G. Alimonti,G. Bellini,B. Caccianiga,L. Cinquini,M. Di Corato,M. Giammarchi,P. Inzani,F. Leveraro,S. Malvezzi,D. Menasce,E. Meroni,L. Moroni,D. Pedrini,L. Perasso,A. Sala,S. Sala,D. Torretta,D. Buchholz,D. Claes,B. Gobbi, B. O'Reilly,J.M. Bishop,N.M. Cason,C.J. Kennedy,G.N. Kim,T.F. Lin, D.L. Puseljic,R.C. Ruchti,W.D. Shephard,J.A. Swiatek,Z.Y. Wu,V. Arena,G. Boca,C. Castoldi,G. Gianini,S.P. Ratti,C. Riccardi,P. Vitulo,A. Lopez,G.P. Grim,V.S. Paolone,P.M. Yager,J.R. Wilson,P.D. Sheldon,F. Davenport,J.F. Filaseta,G.R. Blackett,M. Pisharody,T. Handler,B.G. Cheon,J.S. Kang,K.Y. Kim

Physics letters B（1993）

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Abstract

Fermilab high-energy photoproduction experiment E687 measures a branching ratio of Γ (DS+ → φμ+ν) /Γ (DS+ → φμ+) = 0.58 ± 0.17 (stat) ± 0.07 (sys). This branching ratio is combined with theoretical inputs to obtain a new measurement of the DS+ absolute branching ratio of Γ (DS+ → φμ+) / Γ (DS+ → all) = 0.031 ± 0.009 (stat 0.005 (sys) ± 0.004 (theoretical).

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