Angular distributions in the decay B-->K[superscript *]l[superscript +]l[superscript -]
Author(s)
Zhao, M.; Yamamoto, R. K.; Taylor, Frank E.; Spitznagel, M.; Sciolla, Gabriella; Koeneke, Karsten; Cowan, Ray Franklin; Dujmic, Denis; Fisher, Peter H.; ... Show more Show less
DownloadAubert-2009-Angular distribution.pdf (265.6Kb)
PUBLISHER_POLICY
Publisher Policy
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Alternative title
Angular distributions in the decay B→K*l+l-
Terms of use
Metadata
Show full item recordAbstract
We use a sample of 384×10[superscript 6] BB[over-bar] events collected with the BABAR detector at the PEP-II e+e- collider to study angular distributions in the rare decays B-->K*ℓ+ℓ-, where ℓ+ℓ- is either e+e- or μ+μ-. For low dilepton invariant masses, mℓℓ<2.5 GeV/c[superscript 2], we measure a lepton forward-backward asymmetry AFB=0.24[subscript -0.23][superscript +0.18]±0.05 and K[superscript *] longitudinal polarization F[subscript L]=0.35±0.16±0.04. For mℓℓ>3.2 GeV/c[superscript 2], we measure AFB=0.76-0.32[superscript +0.52]±0.07 and FL=0.71-0.22[superscript +0.20]±0.04.
Date issued
2009-02Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review D
Publisher
American Physical Society
Citation
BABAR Collaboration et al. “Angular distributions in the decay B-->K*l+l-.” Physical Review D 79.3 (2009): 031102. © 2009 American Physical Society.
Version: Final published version
ISSN
1089-4918