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- W87736626 abstract "In the framework of QCD factorization, we study $B^{ + (0)} to eta' K^{ + (0)}$ decays. In order to more reliably determine the phenomenological parameters X H and X A arising from end-point divergences in the hard spectator scattering and weak annihilation contributions, we use the global analysis for twelve $B to PP$ and VP decay modes, such as $B to pi pi$ , $pi K$ , $rho pi$ , $rho K$ , et cetera, but excluding the modes whose (dominant) internal quark-level process is $b to s bar s s$ . Based on the global analysis, we critically investigate possible magnitudes of X H,A and find that both large and small X H,A terms are allowed by the global fit. In the case of the large X H,A effects, the standard model (SM) prediction of the branching ratios (BRs) for $B^{ + (0)} to eta' K^{ + (0)}$ is large and well consistent with the experimental results. In contrast, in the case of the small X H,A effects, the SM prediction for these BRs is smaller than the experimental data. Motivated by the recent Belle measurement of $sin (2phi_1)$ through $B^0 to phi K_s$ , if we take into account possible new physics effects on the quark-level process $b to s bar s s$ , we can explicitly show that these large BRs can be understood even in the small X H,A case. Specifically, we present two new physics scenarios: R-parity violating SUSY and R-parity conserving SUSY." @default.
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- W87736626 date "2004-10-01" @default.
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- W87736626 title "An analysis of $B to eta' K$ decays using a global fit in QCD factorization" @default.
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- W87736626 doi "https://doi.org/10.1140/epjc/s2004-01995-9" @default.
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