Observation of High Momentum η ′ Production in B Decay
نویسندگان
چکیده
We report the first observation of B → ηX transitions with high momentum η mesons. We observe 39.0 ± 11.6 B decay events with 2.0 < pη′ < 2.7 GeV/c, the high momentum region where background from b → c processes is suppressed. We discuss the physical interpretation of the signal, including the possibility that it is due to b → sg transitions. Given that interpretation, we find B(B → ηXs) = (6.2 ± 1.6(stat) ± 1.3(sys) +0.0 −1.5(bkg)) × 10 −4 for 2.0 < pη′ < 2.7 GeV/c. Typeset using REVTEX
منابع مشابه
Momentum Spectrum of η ′ meson produced from the inclusive decay B → η ′ X s Dong - Sheng Du
The momentum distribution for the η′ meson produced through the inclusive decay B → η′X is investigated under two decay mechanisms, b → η′s and b → η′sg. Although all these two mechanisms can explain the recently observed decay rate of B → η′X, the momentum spectrums for η′ meson predicted by them are strongly different. Thus detailed experiment is proposed to distinguish the two cases.
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