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. © 2015 American Physical Society.

Measurement of the branching fractions of the radiative leptonic τ decays τ →eγν ν ¯ and τ →μγν ν ¯ at BABAR measurement of the branching fractions of the ... J.P. Lees et al / Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Stugu, B., Brown, D.N., Kerth, L.T., Kolomensky, Y.u.G., Lee, M.J., Lynch, G., Koch, H., Schroeder, T., Hearty, C., Mattison, T.S., Mckenna, J.A., So, R.Y., Khan, A., Blinov, V.E., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 91:5(2015). [10.1103/PhysRevD.91.051103]

Measurement of the branching fractions of the radiative leptonic τ decays τ →eγν ν ¯ and τ →μγν ν ¯ at BABAR measurement of the branching fractions of the ... J.P. Lees et al

DE NARDO, GUGLIELMO;SCIACCA, CRISOSTOMO;
2015

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. © 2015 American Physical Society.
2015
Measurement of the branching fractions of the radiative leptonic τ decays τ →eγν ν ¯ and τ →μγν ν ¯ at BABAR measurement of the branching fractions of the ... J.P. Lees et al / Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Stugu, B., Brown, D.N., Kerth, L.T., Kolomensky, Y.u.G., Lee, M.J., Lynch, G., Koch, H., Schroeder, T., Hearty, C., Mattison, T.S., Mckenna, J.A., So, R.Y., Khan, A., Blinov, V.E., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 91:5(2015). [10.1103/PhysRevD.91.051103]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/617089
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 15
  • ???jsp.display-item.citation.isi??? 9
social impact