Search for inclusive $b \to s \ell^+$ lepton-

We have searched for the effective FCNC decays b->s l+l- using an inclusive method. We set upper limits on the branching ratios B(b->s e+e-) < 5.7 10^{-5}, B(b->s mu+mu-) < 5.8 10^{-5}, and B(b->s e+-mu-+) < 2.2 10^{-5} (at 90 %\ C.L.). Combining the di-electron and di-muon decay modes we find: B(b->s l+l-) < 4.2 10^{-5} (at 90 % C.L.).

Note:

9 page postscript file, postscript file also available through http://w4.lns.cornell.edu/public/CLNS Report-no: CLNS97/1514, CLEO 97-21

electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
bottom
quark: semileptonic decay
neutral current: flavor changing
lepton: pair production
quark: branching ratio
upper limit

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Search for inclusive b→sℓ+b \to s \ell^+b→sℓ+ lepton-

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Search for inclusive $b \to s \ell^+$ lepton-