Search for the Decay Modes B^± → h^± τℓ

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Search for the Decay Modes B^± → h^± τℓ

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Title: Search for the Decay Modes B^± → h^± τℓ
Author(s):
Lees, J. P.;
Poireau, V.;
Tisserand, V.;
Garra Tico, J.;
Grauges, E.;
Milanes, D. A.;
Palano, A.;
Izen, Joseph M.;
Lou, Xinchou;
BaBar Collaboration
Date Created: 2012-07-16
Format: Text
Item Type: Article
Keywords: Leptons (Nuclear physics)--Decay
B mesons
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.
Publisher: American Physical Society
ISSN: 1550-7998
Source: Physical Review D - Particles, Fields, Gravitation and Cosmology
Link to Related Resource: http://dx.doi.org/10.1103/PhysRevD.86.012004
Persistent Link: http://hdl.handle.net/10735.1/3084
Bibliographic Citation: Lees, J. P., V. Poireau, V. Tisserand, J. Garra Tico, et al. 2012. "Search for the decay modes B^± → h^± τℓ." Physical Review D - Particles, Fields, Gravitation and Cosmology 86(1), doi:10.1103/PhysRevD.86.012004
Terms of Use: © 2012 American Physical Society

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