We present measurements of the branching fractions of three-prong and five-prong τ decay modes using a sample of 430 million τ lepton pairs, corresponding to an integrated luminosity of 468fb-1, collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage rings at SLAC National Accelerator Laboratory. The τ-→(3π)-ηντ, τ-→(3π)-ωντ, and τ-→π-f1(1285)ντ branching fractions are presented, as well as a new limit on the branching fraction of the second-class current decay τ-→π-η'(958)ντ. We search for the decay mode τ-→K-η'(958)ντ and for five-prong decay modes with kaons, and place the first upper limits on their branching fractions.

Study of high-multiplicity three-prong and five-prong τ decays at BABAR

LANCERI, LIVIO;VITALE, LORENZO;
2012-01-01

Abstract

We present measurements of the branching fractions of three-prong and five-prong τ decay modes using a sample of 430 million τ lepton pairs, corresponding to an integrated luminosity of 468fb-1, collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage rings at SLAC National Accelerator Laboratory. The τ-→(3π)-ηντ, τ-→(3π)-ωντ, and τ-→π-f1(1285)ντ branching fractions are presented, as well as a new limit on the branching fraction of the second-class current decay τ-→π-η'(958)ντ. We search for the decay mode τ-→K-η'(958)ντ and for five-prong decay modes with kaons, and place the first upper limits on their branching fractions.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

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: https://hdl.handle.net/11368/2767936
 Avviso

Registrazione in corso di verifica.
La registrazione di questo prodotto non è ancora stata validata in ArTS.

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 29
  • ???jsp.display-item.citation.isi??? 21
social impact