Measurement of branching fractions and rate asymmetries in the rare decays B→K [superscript (*)]ℓ[superscript +]ℓ[superscript -]
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 rep...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/74179 |
| Summary: | 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. |
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