Angular distributions in the decay B-->K[superscript *]l[superscript +]l[superscript -]
Name
Aubert-2009-Angular distribution.pdf
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Checksum (MD5)
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Author(s)
Zhao, M.
Yamamoto, R. K.
Taylor, Frank E.
Spitznagel, M.
Sciolla, Gabriella
Koeneke, Karsten
Cowan, Ray Franklin
Dujmic, Denis
Fisher, Peter H.
Alternative Title
Angular distributions in the decay B→K*l+l-
Date Issued
February 2009
Journal
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
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
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.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.79.031102
