We study the lepton forward-backward asymmetry AFB and the longitudinal K0 polarization FL, as well as an observable P2 derived from them, in the rare decays B → K0lþl−, where lþl− is either eþe− or μþμ−, using the full sample of 471 million BB ̄ events collected at the Υð4SÞ resonance with the BABAR, detector at the PEP-II eþe− collider. We separately fit and report results for the K00ð892Þlþl− and K0þð892Þlþl− final states, as well as their combination K0lþl−, in five disjoint dilepton mass-squared bins. An angular analysis of Bþ → K0þlþl− decays is presented here for the first time.

Measurement of angular asymmetries in the decays B →k∗+

BIANCHI, Fabrizio;DE MORI, FRANCESCA;GAMBA, Diego;
2016-01-01

Abstract

We study the lepton forward-backward asymmetry AFB and the longitudinal K0 polarization FL, as well as an observable P2 derived from them, in the rare decays B → K0lþl−, where lþl− is either eþe− or μþμ−, using the full sample of 471 million BB ̄ events collected at the Υð4SÞ resonance with the BABAR, detector at the PEP-II eþe− collider. We separately fit and report results for the K00ð892Þlþl− and K0þð892Þlþl− final states, as well as their combination K0lþl−, in five disjoint dilepton mass-squared bins. An angular analysis of Bþ → K0þlþl− decays is presented here for the first time.
2016
Inglese
Esperti anonimi
93
5
052015-1
052015-16
16
http://harvest.aps.org/bagit/articles/10.1103/PhysRevD.93.052015/apsxml
Nuclear and High Energy Physics
1 – prodotto con file in versione Open Access (allegherò il file al passo 6 - Carica)
262
289
Lees, J.P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D.N.; Kerth, L.T.; Kolomensky, Yu.G.; Lee, M.J.; Lynch, ...espandi
info:eu-repo/semantics/article
open
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1637453
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