A search for the lepton-flavor-violating (LFV) decay of the tau into three leptons was performed by using 91.5 fb-1 of data collected at an e+ e- center-of-mass energy around 10.58 GeV with the BABAR detector at the SLAC storage ring PEP-II. It was shown that the most stringent limit on FLV was B(τ → μγ) < 3.1 × 10 -7 at 90% C.L., in tau decays. The efficiency of the selection for signal events was estimated with a Monte Carlo (MC) simulation of LFV ray decays. The simulated tau-pairs events including higher-order radiative corrections were generated using KK2F with one tau decaying to three leptons with a three-body phase space distribution.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J., Hicheur, A., et al. (2004). Search for Lepton-flavor violation in the decay τ- → ℓ-ℓ+ℓ-. PHYSICAL REVIEW LETTERS, 92(12), 1-7 [10.1103/PhysRevLett.92.121801].

Search for Lepton-flavor violation in the decay τ- → ℓ-ℓ+ℓ-

CARPINELLI, Massimo;
2004

Abstract

A search for the lepton-flavor-violating (LFV) decay of the tau into three leptons was performed by using 91.5 fb-1 of data collected at an e+ e- center-of-mass energy around 10.58 GeV with the BABAR detector at the SLAC storage ring PEP-II. It was shown that the most stringent limit on FLV was B(τ → μγ) < 3.1 × 10 -7 at 90% C.L., in tau decays. The efficiency of the selection for signal events was estimated with a Monte Carlo (MC) simulation of LFV ray decays. The simulated tau-pairs events including higher-order radiative corrections were generated using KK2F with one tau decaying to three leptons with a three-body phase space distribution.
Articolo in rivista - Articolo scientifico
Computer simulation; Data acquisition; Monte Carlo methods; Neutrons; Probability density function; Topology; Branching fractions; Lepton-flavor-violating decay; Luminosity; Charged particles
English
2004
92
12
1
7
121801
none
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J., Hicheur, A., et al. (2004). Search for Lepton-flavor violation in the decay τ- → ℓ-ℓ+ℓ-. PHYSICAL REVIEW LETTERS, 92(12), 1-7 [10.1103/PhysRevLett.92.121801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389948
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