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- W2949902838 abstract "We have studied charmless two-body B decays involving η and η′ in the framework of QCD improved factorization approach. The spectator hard scattering mechanism for η′ production have been re-examined and extended, which contributions are incorporated consistently into the factorizable leading contributions. It is found that the conventional mechanism would give Br(B→η′K)∼30×10−6 which agrees with predictions based on naive factorization approaches. With the incorporation of spectator hard scattering mechanism contributions, theoretical predictions are improved much and the bulk of Br(B→η′K) are accommodated in the reasonable parameter space. We have also presented calculations of g∗g∗−η(′) transition form factors within the standard hard scattering approach. It is shown that the new contributions in the modes such as B→η′+vector and B→η+π,ρ,K(∗) are small. Direct CP-violation in those decay modes are predicted. It is shown that the prospects for measuring direct CP-violation effects in B±→ η′K±, η′π±, ηπ±, and ηK± are promising at B factories in the near future." @default.
- W2949902838 created "2019-06-27" @default.
- W2949902838 creator A5011003767 @default.
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- W2949902838 date "2001-08-01" @default.
- W2949902838 modified "2023-09-26" @default.
- W2949902838 title "Revisiting charmless two-body B decays involving η′ and η" @default.
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- W2949902838 doi "https://doi.org/10.1016/s0550-3213(01)00313-3" @default.
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