BABAR Publications

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CONF-05/007 Measurements of the rare decays B to K l+ l- and B to K* l+ l-
Doc Type Conference Submissions
Record Created June 8, 2005
SLAC-PUB
SLAC-PUB-11330  No citations
Preprint # hep-ex/0507005
Completed Date July 1, 2005
Comments LP 2005 paper-98
Abstract
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We present measurements of the flavor-changing neutral current
decays B -> Kl+l- and  B -> K*l+l-,
where l+l- is either an e+e- or mu+mu- pair.
The data sample comprises 229 X 10^6 Y(4S) -> BBbar decays 
collected with the BaBar detector at the PEP-II e+e- storage ring.  
We measure the branching fractions
BF(B -> Kl+l-) = (0.34 +- 0.07 +- 0.03) X 10^-6 and
BF(B -> K*l+l-) = (0.78^{+0.19}_{-0.17} +/- 0.12) X 10^-6,
the direct CP asymmetries of these decays, and the relative abundances
of decays to electrons and muons.

Revisions and Files 1 revised June 8, 2005
File Date
Thumbnails
File Name File Type File Format File Size (Kb) Comments
01-JUL-2005 Penguin both Jeff.ps Figure or plot eps 9.60
01-JUL-2005 abstract.tex Abstract txt 0.51
01-JUL-2005 babar-conf-0507.pdf Paper (journal paper or conference submission by BABAR Collaboration) pdf 654.12
01-JUL-2005 babar-conf-0507.ps Paper (journal paper or conference submission by BABAR Collaboration) ps.gz 601.89
01-JUL-2005 higgs penguin.ps Figure or plot eps 6.44
01-JUL-2005 kllDataFit.eps Figure or plot eps 28.50
01-JUL-2005 kll summary.eps Figure or plot eps 10.14
01-JUL-2005 kllsignal.combined.mDilep.eps Figure or plot eps 23.71
01-JUL-2005 kstllDataFit.eps Figure or plot eps 40.33
01-JUL-2005 psisignoveto.kee.DeltaE.eps Figure or plot eps 7.81
01-JUL-2005 psisignoveto.kee.mll.eps Figure or plot eps 8.22
01-JUL-2005 psisignoveto.kmm.DeltaE.eps Figure or plot eps 7.90
01-JUL-2005 psisignoveto.kmm.mll.eps Figure or plot eps 8.19
01-JUL-2005 psiveto.kee.eps Figure or plot eps 48.90
01-JUL-2005 psiveto.kmm.eps Figure or plot eps 36.66
Submitted To2005 Lepton Photon Symposium
Date SubmittedJuly 1, 2005
Categories
  • AWG: Radiative Penguins