Study of the {tau}{sup -}{yields}3h{sup -}2h{sup +}{nu}{sub {tau}} decay
Journal Article
·
· Physical Review. D, Particles Fields
- Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
- IFAE, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona (Spain)
- Universita di Bari, Dipartimento di Fisica (Italy) and INFN, I-70126 Bari (Italy)
- Institute of High Energy Physics, Beijing 100039 (China)
- University of Bergen, Inst. of Physics, N-5007 Bergen (Norway); and others
The branching fraction of the {tau}{sup -}{yields}3h{sup -}2h{sup +}{nu}{sub {tau}} decay (h={pi},K) is measured with the BABAR detector to be (8.56{+-}0.05{+-}0.42)x10{sup -4}, where the first error is statistical and the second systematic. The observed structure of this decay is significantly different from the phase space prediction, with the {rho} resonance playing a strong role. The decay {tau}{sup -}{yields}f{sub 1}(1285){pi}{sup -}{nu}{sub {tau}}, with the f{sub 1}(1285) meson decaying to four charged pions, is observed and the branching fraction is measured to be (3.9{+-}0.7{+-}0.5)x10{sup -4}.
- OSTI ID:
- 20713613
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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