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Measurement of the branching fractions of the radiative leptonic τ decays τ →eγν ν ̄ and τ →μγν ν ̄ at BABAR

Lees, J. P.
•
Poireau, V.
•
Tisserand, V.
altro
Wu, S. L.
2015
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
We perform a measurement of the τ→lγνν ̄ (l=e,μ) branching fractions for a minimum photon energy of 10 MeV in the τ rest frame, using 431fb-1 of e+e- collisions collected at the center-of-mass energy of the (4S) resonance with the BABAR detector at the PEP-II storage rings. We find B(τ→μγνν ̄)=(3.69±0.03±0.10)×10-3 and B(τ→eγνν ̄)=(1.847±0.015±0.052)×10-2, where the first quoted error is statistical and the second is systematic. These results are substantially more precise than previous measurements.
DOI
10.1103/PhysRevD.91.051103
WOS
WOS:000351876200001
Archivio
http://hdl.handle.net/11368/2871956
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84927626986
http://journals.aps.org/prd/issues/91/5
Diritti
open access
license:digital rights management non definito
license:digital rights management non definito
FVG url
https://arts.units.it/request-item?handle=11368/2871956
Soggetti
  • Nuclear and High Ener...

Web of Science© citazioni
9
Data di acquisizione
Mar 21, 2024
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Data di acquisizione
Apr 19, 2024
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