Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/140117
Title: Search for the Rare Decay B→πl+l−
Author: Garra Ticó, Jordi
Graugés Pous, Eugeni
BABAR Collaboration
Keywords: Física de partícules
Experiments
Particle physics
Experiments
Issue Date: 30-Jul-2007
Publisher: American Physical Society
Abstract: We have performed a search for the flavor-changing neutral-current decays B → π ℓ + ℓ − , where ℓ + ℓ − is either e + e − or μ + μ − , using a sample of 230 × 10 6 Υ ( 4 S ) → B ¯¯¯ B decays collected with the BABAR detector. We observe no evidence of a signal and measure the upper limit on the isospin-averaged branching fraction to be B ( B → π ℓ + ℓ − ) < 9.1 × 10 − 8 at 90% confidence level. We also search for the lepton-flavor-violating decays B → π e ± μ ∓ and measure an upper limit on the isospin-averaged branching fraction of B ( B → π e ± μ ∓ ) < 9.2 × 10 − 8 at 90% confidence level.
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.99.051801
It is part of: Physical Review Letters, 2007, vol. 99, num. 5, p. 051801
URI: http://hdl.handle.net/2445/140117
Related resource: https://doi.org/10.1103/PhysRevLett.99.051801
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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