Aubert, B;
Boutigny, D;
Gaillard, JM;
Hicheur, A;
Karyotakis, Y;
Lees, JP;
Robbe, P;
... BABAR Collaboration, .; + view all
(2002)
Search for the rare decays B -> Kl(+)l(-) and B -> K*l(+)l(-).
PHYS REV LETT
, 88
(24)
, Article 241801. 10.1103/PhysRevLett.88.241801.
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Abstract
We present results from a search for 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 22.7 x 10(6) Y (4S) --> BB decays collected with the BABAR detector at the PEP-II B Factory. We obtain the 90% C. L. upper limits B (B --> Kl(+)l(-)) <0.51 x 10(-6) and B (B --> K*l(+)l(-)) <3.1 x 10(-6), close to standard model predictions for these branching fractions. We have also obtained limits on the lepton-family-violating decays B --> Ke(+/-) mu(-/+) and B --> K* e(+/-) mu(-/+).
| Type: | Article |
|---|---|
| Title: | Search for the rare decays B -> Kl(+)l(-) and B -> K*l(+)l(-) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.88.241801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.88.241801 |
| Language: | English |
| Keywords: | SUM-RULE ANALYSIS, LIGHT-CONE QCD, STANDARD MODEL, B->KL(+)L(-), B->K-ASTERISK-L(+)L(-), B->K(ASTERISK)L(+)L(-) |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1303607 |
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