Kη ′ decay as unique probe of η ′ meson
نویسندگان
چکیده
A theory of the B → Kη decay is proposed. It is based on the Cabbibo favored b → c̄cs process followed by a direct materialization of the c̄c pair into the η. This mechanism works due to a non-valence Zweig rule violating c-quark component of the η, which is unique to its very special nature. This non-perturbative “intrinsic charm” content of the η is evaluated using the Operator Product Expansion and QCD low energy theorems. Our results are consistent with an unexpectedly large Br(B → Kη) ≃ 7.8 · 10 recently announced by CLEO.
منابع مشابه
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A theory of the B → Kη decay is proposed. It is based on the Cabbibo favored b → c̄cs process followed by a direct materialization of the c̄c pair into the η. This mechanism works due to a non-valence Zweig rule violating c-quark component of the η, which is unique to its very special nature. This non-perturbative “intrinsic charm” content of the η is evaluated using the Operator Product Expansio...
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تاریخ انتشار 1997