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arXiv 0811.2706hep-ph
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第四代标准模型中$B_s \rar ϕ\ell^+ \ell^-$衰变的双轻子极化不对称性

Double-Lepton Polarization Asymmetries in $B_s \rar ϕ\ell^+ \ell^-$ Decay in the Fourth-Generation Standard Model

S. M. Zebarjad, F. Falahati, H. Mehranfar

摘要:

本文研究了第四代夸克对$B_s \rar ϕ\ell^+ \ell^-$衰变中双轻子极化不对称性的影响。结果表明,与$B \rar K \ell^+ \ell^-$衰变相比,$B_s \rar ϕ\ell^+ \ell^-$衰变中的这些不对称性对第四代参数更敏感。我们的结论是,一个有效的方法来建立存在的第四代夸克可能是研究这些不对称性的$B_s \rar ϕ\ell^+ \ell^-$衰变。

英文摘要:

In this paper, we investigate the effects of the fourth generation of quarks on the double-lepton polarization asymmetries in the $B_s \rar ϕ\ell^+ \ell^-$ decay. It is shown that these asymmetries in $B_s \rar ϕ\ell^+ \ell^-$ decay compared with those of $B \rar K \ell^+ \ell^-$ decay are more sensitive to the fourth-generation parameters. We conclude that an efficient way to establish the existence of the fourth generation of quarks could be the study of these asymmetries in the $B_s \rar ϕ\ell^+ \ell^-$ decay.

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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