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Studies of τ-→ηK-ντ and τ-→ηπ-ντ at BABAR and a search for a second-class current


BABAR Collaboration; del Amo Sanchez, P; Snoek, H (2011). Studies of τ-→ηK-ντ and τ-→ηπ-ντ at BABAR and a search for a second-class current. Physical Review D, 83(3):032002.

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.

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.

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Additional indexing

Other titles:Studies of tau- ---> eta K-nu and tau- ---> eta pi- nu(tau) at BaBar and a search for a second-class current
Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2011
Deposited On:12 Feb 2012 17:12
Last Modified:07 Dec 2017 12:27
Publisher:American Physical Society
ISSN:1550-7998 (P) 1089-4918 (E)
Publisher DOI:https://doi.org/10.1103/PhysRevD.83.032002
Related URLs:http://arxiv.org/abs/1011.3917

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