Aubert, B;
Bona, M;
Boutigny, D;
Karyotakis, Y;
Lees, JP;
Poireau, V;
Prudent, X;
... Neal, H; + view all
(2007)
Search for the rare decay B ->pi l(+)l(-).
PHYS REV LETT
, 99
(5)
, Article 051801. 10.1103/PhysRevLett.99.051801.
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Abstract
We have performed a search for the flavor-changing neutral-current decays B-->pi l(+)l(-), where l(+)l(-) is either e(+)e(-) or mu(+)mu(-), using a sample of 230x10(6) Upsilon(4S)-->B(B)over-bar decays collected with the BABAR detector. We observe no evidence of a signal and measure the upper limit on the isospin-averaged branching fraction to be B(B-->pi l(+)l(-)) < 9.1 x 10(-8) at 90% confidence level. We also search for the lepton-flavor-violating decays B-->pi e(+/-)mu(-/+) and measure an upper limit on the isospin-averaged branching fraction of B(B-->pi e(+/-)mu(-/+)) < 9.2 x 10(-8) at 90% confidence level.
| Type: | Article |
|---|---|
| Title: | Search for the rare decay B ->pi l(+)l(-) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.99.051801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.99.051801 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | QUARK-MODEL |
| UCL classification: | UCL 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/1303850 |
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