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.
The First observation of the muonic decay D(s)+- ---> mu+- muon-neutrino / S., Aoki; Rosa, Giovanni. - In: PROGRESS OF THEORETICAL PHYSICS. - ISSN 0033-068X. - STAMPA. - 89:(1993), pp. 131-138. [10.1143/PTP.89.131]
The First observation of the muonic decay D(s)+- ---> mu+- muon-neutrino.
ROSA, Giovanni
1993
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
