A search for the decay modes $B^{+-} \to h^{+-} \tau^{+-}l$ - INSPIRE

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A search for the decay modes $B^{+-} \to h^{+-} \tau^{+-}l$

BaBar

Collaboration

Apr, 2012

16 pages

Published in:

Phys.Rev.D 86 (2012) 012004

e-Print:

1204.2852 [hep-ex]

DOI:

10.1103/PhysRevD.86.012004

PDG:

{{\mathit B}^{+}}

\rightarrow

{{\mathit K}^{+}}{{\mathit \mu}^{\pm}}{{\mathit \tau}^{\mp}}

Report number:

SLAC-PUB-14951,
BABAR-PUB-11-023

Experiments:

SLAC-PEP2-BABAR

View in:

reference search125 citations

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Abstract: (arXiv)

We present a search for the lepton flavor violating decay modes B+/- to h+/- tau l (h= K,pi; l= e,mu) using the BaBar data sample, which corresponds to 472 million BBbar 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 tau four-momentum. The resulting tau candidate mass is our main discriminant against combinatorial background. We see no evidence for B+/- to h+/- tau l decays and set a 90% confidence level upper limit on each branching fraction at the level of a few times 10^-5.

Note:

15 pages, 7 figures, submitted to Phys. Rev. D

13.25.Hw
14.40.Nd
electron positron: annihilation
electron positron: colliding beams
B: pair production
tau: hadronic decay
B: semileptonic decay
lepton: flavor: violation
tau: particle identification
mass spectrum: (K pi)

References(20)

Figures(18)

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