| Abstract |
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We present preliminary results from a search for inclusive charmless
B->KX decays. These decays occur dominantly via one-loop b->s penguin
transitions, and can provide useful information about these processes.
Using a sample of 288.5/fb collected with the BABAR detector at the
PEP-II asymmetric-energy e+e- B Factory at SLAC, we search for
high-energy kaons recoiling against fully reconstructed B decays. We
measure the partial branching fractions for kaons with momentum
p*(K)>2.34GeV in the B rest frame, and obtain (in units of 10^-6):
B(B->K+X, p*>2.34GeV) = 196^{+37}_{-34}(stat.)^{+31}_{-30}(syst.) and
B(B->K0X, p*>2.34GeV) = 154^{+55}_{-48}(stat.)^{+55}_{-41}(syst.)
(<266 at 90% C.L.).
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