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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.