We study the lepton forward-backward asymmetry AFB and the longitudinal K∗ polarization FL, as well as an observable P2 derived from them, in the rare decays B→K∗+, where + is either e+e- or μ+μ-, using the full sample of 471 million BB-events collected at the (4S) resonance with the BABAR, detector at the PEP-II e+e- collider. We separately fit and report results for the K∗0(892)+ and K∗+(892)+ final states, as well as their combination K∗+, in five disjoint dilepton mass-squared bins. An angular analysis of B+→K∗++ decays is presented here for the first time.
Measurement of angular asymmetries in the decays B to K*ℓ+ℓ−
CENCI, RICCARDO;LUSIANI, Alberto;
2016
Abstract
We study the lepton forward-backward asymmetry AFB and the longitudinal K∗ polarization FL, as well as an observable P2 derived from them, in the rare decays B→K∗+, where + is either e+e- or μ+μ-, using the full sample of 471 million BB-events collected at the (4S) resonance with the BABAR, detector at the PEP-II e+e- collider. We separately fit and report results for the K∗0(892)+ and K∗+(892)+ final states, as well as their combination K∗+, in five disjoint dilepton mass-squared bins. An angular analysis of B+→K∗++ decays is presented here for the first time.File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
PhysRevD.93.052015.pdf
accesso aperto
Descrizione: Articolo principale
Tipologia:
Published version
Licenza:
Solo Lettura
Dimensione
1.22 MB
Formato
Adobe PDF
|
1.22 MB | Adobe PDF | |
11384_65256.pdf
accesso aperto
Tipologia:
Accepted version (post-print)
Licenza:
Solo Lettura
Dimensione
476.79 kB
Formato
Adobe PDF
|
476.79 kB | Adobe PDF |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.