We study the lepton forward-backward asymmetry A_FB and the longitudinal K*— polarization FL, as well as an observable P2 derived from them, in the rare decays B-->K*l+l-, where l+l- is either e+e- or mu+mu-, using the full sample of 471 million BB-events collected at the Upsilon(4S) resonance with the BABAR, detector at the PEP-II e+e- collider. We separately fit and report results for the K*—0(892)l+l- and K*+(892)l+l- final states, as well as their combination K*l—+l-, in five disjoint dilepton mass-squared bins. An angular analysis of B+-->’K*—+l+l- decays is presented here for the first time.

Measurement of angular asymmetries in the decays B--> K*l+l-

Calabrese, R.;Garzia, I.;Luppi, E.;
2016

Abstract

We study the lepton forward-backward asymmetry A_FB and the longitudinal K*— polarization FL, as well as an observable P2 derived from them, in the rare decays B-->K*l+l-, where l+l- is either e+e- or mu+mu-, using the full sample of 471 million BB-events collected at the Upsilon(4S) resonance with the BABAR, detector at the PEP-II e+e- collider. We separately fit and report results for the K*—0(892)l+l- and K*+(892)l+l- final states, as well as their combination K*l—+l-, in five disjoint dilepton mass-squared bins. An angular analysis of B+-->’K*—+l+l- decays is presented here for the first time.
2016
Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D. N.; Kerth, L. T.; Kolomensky, Y. U. G.; Lee, M. J.; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2377666
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