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arXiv 0812.4392hep-ph
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在LHC生产$H^\pm t$时CP破坏

CP violation in $H^\pm t$ production at the LHC

E. Christova, H. Eberl, E. Ginina, W. Majerotto

摘要:

我们研究了CP破坏在LHC($pp \to tH^\pm + X$)中荷电希格斯玻色子和顶夸克的产生中的作用。我们计算了MSSM中$H^+$的总截面和次领先级$H^-$产生之间的CP破坏不对称性,并进行了详细的数值分析。在生产中,不对称性约为20%。在壳层上带电的希格斯玻色子的产生和任何随后的衰变中的不对称性是产生中的不对称性和衰变中的不对称性的很好的近似。我们考虑$H^\pm $随后衰变为$t b$、$ν_ττ^\pm$和$W h^0$。在$H^\pm \to t b$衰变的情况下,主要是由于与胶子的CP破坏盒图,不对称性可以上升到$\sim$ 12%。

英文摘要:

We study effects of CP violation in the associated production of a charged Higgs boson and a top quark at the LHC, $pp \to tH^\pm + X$. We calculate the CP violating asymmetry between the total cross section for $H^+$ and $H^-$ production at next-to-leading order in the MSSM, and perform a detailed numerical analysis. In the production the asymmetry is of the order of 20%. The asymmetry in the production and any subsequent decay of an on-shell charged Higgs boson is to a good approximation the sum of the asymmetry in the production and the asymmetry in the decay. We consider subsequent decays of $H^\pm $ to $t b$, $ν_ττ^\pm$ and $W h^0$. In the case with $H^\pm \to t b$ decay, mainly due to CP violating box graphs with gluino, the asymmetry can go up to $\sim$ 12%.

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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