We use a sample of 384×106 BB̄ events collected with the BABAR detector at the PEP-II e+e- collider to study angular distributions in the rare decays B→K* + -, where + - is either e+e- or μ+μ-. For low dilepton invariant masses, m <2.5GeV/c2, we measure a lepton forward-backward asymmetry AFB=0.24-0.23+0.18±0.05 and K* longitudinal polarization FL=0.35±0.16±0.04. For m >3.2GeV/c2, we measure AFB=0.76-0.32+0.52±0.07 and FL=0.71-0.22+0.20±0.04. © 2009 The American Physical Society.

Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prudent, X., et al. (2009). Angular distributions in the decay B→K*l+l-. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 79(3), 1-8 [10.1103/PhysRevD.79.031102].

Angular distributions in the decay B→K*l+l-

PATRIGNANI, CLAUDIA;
2009

Abstract

We use a sample of 384×106 BB̄ events collected with the BABAR detector at the PEP-II e+e- collider to study angular distributions in the rare decays B→K* + -, where + - is either e+e- or μ+μ-. For low dilepton invariant masses, m <2.5GeV/c2, we measure a lepton forward-backward asymmetry AFB=0.24-0.23+0.18±0.05 and K* longitudinal polarization FL=0.35±0.16±0.04. For m >3.2GeV/c2, we measure AFB=0.76-0.32+0.52±0.07 and FL=0.71-0.22+0.20±0.04. © 2009 The American Physical Society.
2009
Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prudent, X., et al. (2009). Angular distributions in the decay B→K*l+l-. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 79(3), 1-8 [10.1103/PhysRevD.79.031102].
Aubert, B; Bona, M.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.; Tico, J. Garra; Grauges, E.; Lopez, L.; Palano,...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/548077
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 146
  • ???jsp.display-item.citation.isi??? 55
social impact