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Title: Measurement of branching fractions and rate asymmetries in the rare decays B → K(*)ℓ+ℓ−
Author: Garra Ticó, Jordi
Graugés Pous, Eugeni
BABAR Collaboration
Keywords: Física de partícules
Leptons (Física nuclear)
Particle physics
Leptons (Nuclear physics)
Issue Date: 24-Aug-2012
Publisher: American Physical Society
Abstract: In a sample of 471 × 10 6 B ¯¯¯ B events collected with the BABAR detector at the PEP-II e + e − collider we study the rare decays B → K ( * ) ℓ + ℓ − , where ℓ + ℓ − is either e + e − or μ + μ − . We report results on partial branching fractions and isospin asymmetries in seven bins of dilepton mass-squared. We further present C P and lepton-flavor asymmetries for dilepton masses below and above the J / ψ resonance. We find no evidence for C P or lepton-flavor violation. The partial branching fractions and isospin asymmetries are consistent with the Standard Model predictions and with results from other experiments.
Note: Reproducció del document publicat a:
It is part of: Physical Review D, 2012, vol. 86, num. 3, p. 032012
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ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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