Search for the Rare Decays B-->Kl+l- and B-->K(892)*l+l-
- SLAC
We present results from a search for the flavor-changing neutral current decays B {yields} K{ell}{sup +}{ell}{sup -} and B {yields} K*{ell}{sup +}{ell}{sup -}, where {ell}{sup +}{ell}{sup -} is either an e{sup +}e{sup -} or {mu}{sup +}{mu}{sup -} pair. The data sample comprises 22.7 x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II B Factory. We obtain the 90% C.L. upper limits {Beta}(B {yields} K{ell}{sup +}{ell}{sup -}) < 0.50 x 10{sup -6} and {Beta}(B {yields} K* {ell}{sup +}{ell}{sup -}) < 2.9 x 10{sup -6}, close to Standard Model predictions for these branching fractions. We have also obtained limits on the lepton-family-violating decays B {yields} Ke{sup {+-}} {mu}{sup {-+}} and B {yields} K*e{sup {+-}}{mu}{sup {-+}}.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA; (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 798961
- Report Number(s):
- SLAC-PUB-9102
- Country of Publication:
- United States
- Language:
- English
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