In a sample of 471×106 BB⎯⎯⎯ 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 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.

Lees, J.P., Poireau, V., Tisserand, V., Garra Tico, J., Grauges, E., Palano, A., et al. (2012). Measurement of branching fractions and rate asymmetries in the rare decays B -> K((*))l(+)l(-). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 86(3), 1-15 [10.1103/PhysRevD.86.032012].

Measurement of branching fractions and rate asymmetries in the rare decays B -> K((*))l(+)l(-)

PATRIGNANI, CLAUDIA;
2012

Abstract

In a sample of 471×106 BB⎯⎯⎯ 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 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.
2012
Lees, J.P., Poireau, V., Tisserand, V., Garra Tico, J., Grauges, E., Palano, A., et al. (2012). Measurement of branching fractions and rate asymmetries in the rare decays B -> K((*))l(+)l(-). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 86(3), 1-15 [10.1103/PhysRevD.86.032012].
Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/537529
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