We report on analyses of tau lepton decays τ−→ηK−ντ and τ−→ηπ−ντ, with η→π+π−π0, using 470  fb−1 of data from the BABAR experiment at PEP-II, collected at center-of-mass energies at and near the Υ(4S) resonance. We measure the branching fraction for the τ−→ηK−ντ decay mode, ℬ(τ−→ηK−ντ)=(1.42±0.11(stat)±0.07(syst))×10−4, and report a 95% confidence level upper limit for the second-class current process τ−→ηπ−ντ, ℬ(τ−→ηπ−ντ)<9.9×10−5.

Sanchez, P.d.A., Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Tico, J.G., et al. (2011). Studies of tau(-) -> eta K(-) nu(tau) and tau(-) -> eta pi(-) nu(tau) at BABAR and a search for a second-class current. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 83(3), 1-10 [10.1103/PhysRevD.83.032002].

Studies of tau(-) -> eta K(-) nu(tau) and tau(-) -> eta pi(-) nu(tau) at BABAR and a search for a second-class current

PATRIGNANI, CLAUDIA;
2011

Abstract

We report on analyses of tau lepton decays τ−→ηK−ντ and τ−→ηπ−ντ, with η→π+π−π0, using 470  fb−1 of data from the BABAR experiment at PEP-II, collected at center-of-mass energies at and near the Υ(4S) resonance. We measure the branching fraction for the τ−→ηK−ντ decay mode, ℬ(τ−→ηK−ντ)=(1.42±0.11(stat)±0.07(syst))×10−4, and report a 95% confidence level upper limit for the second-class current process τ−→ηπ−ντ, ℬ(τ−→ηπ−ντ)<9.9×10−5.
2011
Sanchez, P.d.A., Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Tico, J.G., et al. (2011). Studies of tau(-) -> eta K(-) nu(tau) and tau(-) -> eta pi(-) nu(tau) at BABAR and a search for a second-class current. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 83(3), 1-10 [10.1103/PhysRevD.83.032002].
Sanchez, P. del Amo; Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Tico, J. Garra; Grauges, E.; Martinelli, M.; Palano, A.; Pappagallo, M.; E...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

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/11585/543535
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 45
  • ???jsp.display-item.citation.isi??? 32
social impact