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arXiv 0806.1254hep-ph
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用QCD分解研究Bc -> BP,BV衰变

Study of Bc -> BP,BV Decays with QCD Factorization

Junfeng Sun, Yueling Yang, Wenjie Du, Huilan Ma

摘要:

用QCD因子分解方法研究了Bc → BP、BV衰变(其中P和V分别表示赝标和矢量介子).考虑电流-电流算子和企鹅算子的贡献,在前导近似下估计了分支比的幅值。我们发现企鹅算子的贡献很小,由于CKM元素的严重抑制。最有希望的衰变模式是Bc -> Bs Pi,Bs rho,这可能很容易在强子对撞机上检测到。

英文摘要:

The Bc -> BP,BV decays are studied with the QCD factorization approach (where P and V denote pseudoscalar and vector mesons, respectively). Considering the contributions of both current-current and penguin operators, the amplitudes of branching ratios are estimated at the leading approximation. We find that the contributions of the penguin operators are very small due to the serious suppression by the CKM elements. The most promising decay modes are Bc -> Bs Pi, Bs rho, which might be easily detected at hadron colliders.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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