The branching fraction of the τ-→3h-2h+ντ decay (h=π,K) is measured with the BABAR detector to be (8.56±0.05±0.42) ×10-4, 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 ρ resonance playing a strong role. The decay τ-→f1(1285)π-ντ, with the f1(1285) meson decaying to four charged pions, is observed and the branching fraction is measured to be (3.9±0.7±0.5)×10-4.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2005). Study of the τ-→3h-2h+ντ decay. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 72(7) [10.1103/PhysRevD.72.072001].

Study of the τ-→3h-2h+ντ decay

CARPINELLI, Massimo;
2005

Abstract

The branching fraction of the τ-→3h-2h+ντ decay (h=π,K) is measured with the BABAR detector to be (8.56±0.05±0.42) ×10-4, 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 ρ resonance playing a strong role. The decay τ-→f1(1285)π-ντ, with the f1(1285) meson decaying to four charged pions, is observed and the branching fraction is measured to be (3.9±0.7±0.5)×10-4.
Articolo in rivista - Articolo scientifico
BABAR detector
English
2005
72
7
072001
none
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2005). Study of the τ-→3h-2h+ντ decay. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 72(7) [10.1103/PhysRevD.72.072001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389870
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