First Measurement of Inclusive B{yields}X{sub s{eta}} Decays
Journal Article
·
· Physical Review Letters
- University of Hawaii, Honolulu, Hawaii 96822 (United States)
- High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
We report a first measurement of inclusive B{yields}X{sub s{eta}} decays, where X{sub s} is a charmless state with unit strangeness. The measurement is based on a pseudoinclusive reconstruction technique and uses a sample of 657x10{sup 6}BB pairs accumulated with the Belle detector at the KEKB e{sup +}e{sup -} collider. For M{sub X{sub s}}<2.6 GeV/c{sup 2}, we measure a branching fraction of [26.1{+-}3.0(stat){sub -2.1}{sup +1.9}(syst){sub -7.1}{sup +4.0}(model)]x10{sup -5} and a direct CP asymmetry of A{sub CP}=-0.13{+-}0.04{sub -0.03}{sup +0.02}. Over half of the signal occurs in the range M{sub X{sub s}}>1.8 GeV/c{sup 2}.
- OSTI ID:
- 21541674
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 105; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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