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首页> 外文期刊>Physics of atomic nuclei >Effects of Final-State Interactions in Pure Annihilation Decay of B_s~0 → π~+π~(–?)
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Effects of Final-State Interactions in Pure Annihilation Decay of B_s~0 → π~+π~(–?)

机译:最终状态相互作用对B_s〜0→π〜+π〜(–?)的纯An没衰变的影响

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摘要

The hadronic decay of B_s~0 → π~+π~? is analyzed by using “QCD factorization” (QCDF) method and final-state interaction (FSI). First, the B_s~0 → π~+π~? decay is calculated via QCDF method and the annihilation graphs only exist in this method. Hence, the FSI must be seriously considered to solve the B_s~0 → π~+π~? decay and the K~(+(?))K~(?(?)) and K~(0(?))K~(0(?)) via the exchange of K~(0(?)) and K~(?(?)) mesons are chosen for the intermediate states. To estimate the intermediate state amplitudes, the QCDF method is again used. These amplitudes are used in the absorptive part of the diagrams. The experimental branching ratio of B_s~0 → π~+π~? decay is less than 1.2× 10~(?6) and our results according to the QCDF method and FSI are 0.68 × 10~(?8) and 1.18 × 10~(?6), respectively.
机译:B_s〜0→π〜+π〜?的强子衰变使用“ QCD分解”(QCDF)方法和最终状态交互(FSI)进行分析。首先,B_s〜0→π〜+π〜?衰减是通过QCDF方法计算的,the灭图仅存在于该方法中。因此,必须认真考虑FSI以解决B_s〜0→π〜+π〜?通过交换K〜(0(?))和K衰减和K〜(+(?))K〜(?(?))和K〜(0(?))K〜(0(?))为中间状态选择〜(?(?))介子。为了估计中间状态幅度,再次使用QCDF方法。这些幅度在图表的吸收部分中使用。 B_s〜0→π〜+π〜?的实验分支比衰减小于1.2×10〜(?6),根据QCDF方法和FSI得出的结果分别为0.68×10〜(?8)和1.18×10〜(?6)。

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