Measurement of branching fractions and rate asymmetries in the rare decays B→K [superscript (*)]ℓ[superscript +]ℓ[superscript -]
Author(s)
Dujmic, Denis; Sciolla, Gabriella; Cowan, Ray F![Thumbnail](/bitstream/handle/1721.1/74179/Lees-2012-Measurement%20of%20branching%20fractions%20and%20rate%20asymmetries%20in%20the%20rare%20decays.pdf.jpg?sequence=6&isAllowed=y)
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In a sample of 471×10[superscript 6] BB̅ events collected with the BABAR detector at the PEP-II e[superscript +]e[superscript -] collider we study the rare decays B→K[superscript (*)ℓ+ℓ-], where [superscript ℓ+ℓ-] is either e[superscript +]e[superscript -] or μ[superscript +]μ[superscript -]. We report results on partial branching fractions and isospin asymmetries in seven bins of dilepton mass-squared. We further present CP and lepton-flavor asymmetries for dilepton masses below and above the J/ψ resonance. We find no evidence for CP or lepton-flavor violation. The partial branching fractions and isospin asymmetries are consistent with the Standard Model predictions and with results from other experiments.
Date issued
2012-08Department
Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. et al. “Measurement of Branching Fractions and Rate Asymmetries in the Rare Decays B→[superscript (*)]ℓ[superscript +]ℓ[superscript -].” Physical Review D 86.3 (2012). © 2012 American Physical Society
Version: Final published version
ISSN
1550-7998
1089-4918