We present a search for the lepton flavor violating decay modes B ±→h ±τ l (h=K, π; l=e, μ) using the BABAR data sample, which corresponds to 472×106 BB̄ pairs. The search uses events where one B meson is fully reconstructed in one of several hadronic final states. Using the momenta of the reconstructed B, h, and l candidates, we are able to fully determine the τ four-momentum. The resulting τ candidate mass is our main discriminant against combinatorial background. We see no evidence for B ±→h ±τ l decays and set a 90% confidence level upper limit on each branching fraction at the level of a few times 10 -5. © 2012 American Physical Society.

Lees, J., Poireau, V., Tisserand, V., Garra Tico, J., Grauges, E., Milanes, D., et al. (2012). Search for the decay modes B±→h±τ l. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 86(1), 1-14 [10.1103/PhysRevD.86.012004].

Search for the decay modes B±→h±τ l

PATRIGNANI, CLAUDIA;
2012

Abstract

We present a search for the lepton flavor violating decay modes B ±→h ±τ l (h=K, π; l=e, μ) using the BABAR data sample, which corresponds to 472×106 BB̄ pairs. The search uses events where one B meson is fully reconstructed in one of several hadronic final states. Using the momenta of the reconstructed B, h, and l candidates, we are able to fully determine the τ four-momentum. The resulting τ candidate mass is our main discriminant against combinatorial background. We see no evidence for B ±→h ±τ l decays and set a 90% confidence level upper limit on each branching fraction at the level of a few times 10 -5. © 2012 American Physical Society.
2012
Lees, J., Poireau, V., Tisserand, V., Garra Tico, J., Grauges, E., Milanes, D., et al. (2012). Search for the decay modes B±→h±τ l. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 86(1), 1-14 [10.1103/PhysRevD.86.012004].
Lees, J.P; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Milanes, D.A.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B.; Brown, D.N.; Kert...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/552901
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