Measurement of the branching ratio of the decay D0→π−μ+ν relative to D0→K−μ+ν

Abaz Kryemadhi, → K−μν,P. M. Yager,J. C. Anjos,I. Bediaga,C. Göbel,A. A. Machado,J. Magnin,A. Massafferri,J. M. de Miranda,I. M. Pepe,E. Polycarpo,A. C. dos Reis,S. Carrillo,E. Casimiro,E. Cuautle,A. Sánchez-Hernández,F. Vázquez,L. Agostino,L. Cinquini,J. P. Cumalat,I. Segoni,K. Stenson,J. N. Butler,H.W.K. Cheung,G. Chiodini,I. Gaines,P. H. Garbincius,L. A. Garren,E. Gottschalk,P. H. Kasper,A. E. Kreymer,R. Kutschke,M. Wang,L. Benussi,M. Bertani,S. Bianco,F. L. Fabbri,A. Zallo,M. Reyes,C. Cawlfield,D. Y. Kim,A. Rahimi,J. Wiss,R. Gardner,Y. S. Chung,J. S. Kang,B. R. Ko,J. W. Kwak,K. B. Lee,K. Cho,H. Park,G. Alimonti,S. Barberis,M. Boschini,A. Cerutti,P. Dini,L. Edera,S. Erba,P. Inzani,F. Leveraro,S. Malvezzi,D. Menasce,M. Mezzadri,L. Moroni,D. Pedrini,C. Pontoglio,F. Prelz,M. Rovere,S. Sala,G. Bonomi,G. Gianini,G. Liguori,D. Lopes Pegna,D. Pantea,S. P. Ratti,C. Riccardi,P. Vitulo,H. Hernandez,A. M. Lopez,H. Mendez,A. Paris,J. Quinones,J. E. Ramirez,Y. Zhang,J. R. Wilson,T. Handler,R. Mitchell,D. Engh,M. Hosack,W. E. Johns,E. Luiggi,J. E. Moore,M. Nehring,P. D. Sheldon,E. W. Vaandering,M. Webster,M. Sheaff

semanticscholar（2019）

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摘要

We present a new measurement of the branching ratio of the Cabibbo suppressed decay D0 → π−μ+ν relative to the Cabibbo favored decayD0 → K−μ+ν and an improved measurement of the ratio |f π + (0)/f K + (0)|. Our results are 0 . 74±0.008±0.007 for the branching ratio and 0 .85± 0.04± 0.04± 0.01 for the form factor ratio, respectively.  2004 Elsevier B.V.

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