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

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del Amo Sanchez, P., Lees, J., Poireau, V., Prencipe, E., Tisserand, V., Garra Tico, J., Grauges, E., Martinelli, M., Palano, A., Pappagallo, M. et al.
(2011) Studies of τ-→ηK-ντ and τ-→ηπ-ντ at BABAR and a search for a second-class current. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.83 (No.3). 032002 . doi:10.1103/PhysRevD.83.032002 ISSN 1550-7998.

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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.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Official Date: 2 February 2011
Dates:
DateEvent
2 February 2011Published
Volume: Vol.83
Number: No.3
Number of Pages: 10
Page Range: 032002
DOI: 10.1103/PhysRevD.83.032002
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: SLAC , U.S. Department of Energy , National Science Foundation , Natural Sciences and Engineering Research Council (Canada) , Commissariat a l'Energie Atomique and Institut National de Physique Nucleaire et de Physique des Particules (France) , Bundesministerium fur Bildung und Forschung , Deutsche Forschungsgemeinschaft (Germany) , Istituto Nazionale di Fisica Nucleare (Italy) , Foundation for Fundamental Research on Matter (The Netherlands) , Research Council of Norway , Ministry of Education and Science of the Russian Federation , Ministerio de Ciencia e Innovacion (Spain) , Science and Technology Facilities Council (United Kingdom) , European Union , A. P. Sloan Foundation (USA) , Binational Science Foundation (U.S.-Israel)

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