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Prog. Theor. Phys. Vol. 89 No. 1 (1993) pp. 131-138

[ Full Text PDF : FREE ACCESS (752K) ]

Observation of the Muonic Decay, Ds± →µ±νµ

S. Aoki,a) G. Baroni,b) V. Bisi,c) A.C. Breslin,d) M.G. Catanesi,e) K. Chiba,a) D.H. Davis,f) S. Di Liberto,b) M.J. Esten,f) C. Gerke,g) K. Hoshino,a) M. Kazuno,h) M. Kobayashi,a) K. Kodama,i) Y. Maeda,j) A. Marzari-Chiesa,c) M.A. Mazzoni,b) F. Meddi,b) F. Minakawa,h) M. Miyanishi,a) M.T. Muciaccia,e) M. Nakamura,a) K. Nakazawa,k) K. Niu,a) K. Niwa,a) G. Poulard,g) E. Radicioni,c) L. Ramello,c) G. Romano,l) G. Rosa,b) F. Ruggieri,e) M.S. Sartori,c) H. Sasaki,a) Y. Sato,m) C. Sgarbi,b) H. Shibuya,h) S. Simone,e) H. Tajima,a) S. Tasaka,k) I. Tezuka,m) D.N. Tovee,f) N. Ushidai) and Y. Yanagisawaa)

a)Department of Physics, Nagoya University, Nagoya 464-01
b)Dipartimento di Fisica, Università `La Sapienza' and Sezione INFN, I-00186 Rome
c)Dipartimento di Fisica Sperimentale, dell' Università di Torino, and Sezione INFN, I-10125 Turin
d)Department of Physics, University College Dublin 4
e)Dipartimento di Fisica dell' Università di Bari and Sezione INFN, I-70126 Bari
f)Department of Physics and Astronomy, University College London, London WC1E 6BT
g)CERN, CH-1211 Geneva 23
h)Department of Physics, Toho University, Funabashi 274
i)Aichi University of Education, Kariya 448
j)Faculty of Education, Yokohama National University, Yokohama 240
k)Physics Department, Gifu University, Gifu 502
l)Dipartimento di Fisica Teorica e SMSA, Università di Salerno, and INFN, I-84100 Salerno
m)Faculty of Education, Utsunomiya University, Utsunomiya 321

(Received August 3, 1992)

Abstract:

The muonic decay of charmed strange mesons has been observed directly, in the analysis of a sample of 144 decays of charged charmed particles into a muon and no other charged particle. The branching ratio is estimated to be BR(Ds± →µ±νµ) = (4.0+1.8+0.8-1.4-0.6 ±1.7) ×10-3, assuming a ratio r = 0.27 between production cross sections of Ds± and neutral charmed particles. The decay constant fDs is estimated to be (232 ±45 ±20 ±48) MeV/c2 and does not depend on theoretical assumptions.


URL : http://ptp.ipap.jp/link?PTP/89/131/
DOI : 10.1143/PTP.89.131

[ Full Text PDF : FREE ACCESS (752K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 92 No. 5 (1994) pp. 997-1003 :
    Finite Charm-Mass Effects in fDs Determination within the Heavy Quark Effective Theory
    Zenrō Hioki
  2. Progress of Theoretical Physics Vol. 93 No. 3 (1995) pp. 571-583 :
    Right-Handed b to c Coupling and CP Violation
    Toshihiko Hattori, Tsutom Hasuike, Toshio Hayashi and Seiichi Wakaizumi

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