Using a data sample of 1 475 000 Z → qq̄(γ) events collected during 1994 with the L3 detector at LEP, we have studied the purely leptonic decays of heavy flavour mesons, and . A signal is observed in the invariant mass distribution M(γDs−) corresponding to the decay sequence , , . The branching fraction for decays is measured to be . No signal of decays is observed in the data, corresponding to an upper limit on the branching franction at 90% CL.

Measurement of Ds- --> tau- anti-neutrino_tau and a new limit for B- --> tau- anti-neutrino_tau

CAVALLO, Nicola;
1997

Abstract

Using a data sample of 1 475 000 Z → qq̄(γ) events collected during 1994 with the L3 detector at LEP, we have studied the purely leptonic decays of heavy flavour mesons, and . A signal is observed in the invariant mass distribution M(γDs−) corresponding to the decay sequence , , . The branching fraction for decays is measured to be . No signal of decays is observed in the data, corresponding to an upper limit on the branching franction at 90% CL.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11563/5430
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 73
  • ???jsp.display-item.citation.isi??? 71
social impact