Search for inclusive charmless B->K+X and B->K0X decays

Details Search for inclusive charmless B->K+X and B->K0X decays Search for inclusive charmless B->K+X and B->K0X decays

2006-07-25

arxiv.org/abs/hep-ex/0607053v1

Physics

High Energy Physics

High Energy Physics - Experiment

15 pages, 2 postscript figures, submitted to ICHEP2006

Scientific paper

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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