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arXiv 1509.04643hep-ph
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$\bar B\to X_s γ$和扭曲的大块希格斯粒子

$\bar B\to X_s γ$ with a warped bulk Higgs

P. Moch, J. Rohrwild

摘要:

本文研究了具有红外定域体粒子Higgs的Randall-Sundrum模型中的衰变$\bar B\to X_sγ$。正在审议的两种模式是一种极小模型和一种带有拘留保护机制的模式。我们包括树和一个回路图的影响,涉及5D胶子和希格斯交换以及QCD校正所产生的Kaluza-Klein规模的衰变的典型规模的演变。我们发现RS校正的分支分数可以是相当大的大Yukawas和中等KK尺度$T$ ;小Yukawas的RS贡献是足够小,在目前的实验数据是不可见的。

英文摘要:

We study the decay $\bar B\to X_sγ$ in Randall-Sundrum models with an IR-localised bulk Higgs. The two models under consideration are a minimal model as well as a model with a custodial protection mechanism. We include the effects of tree- and one-loop diagrams involving 5D gluon and Higgs exchanges as well as QCD corrections arising from the evolution from the Kaluza-Klein scale to the typical scale of the decay. We find the RS corrections to the branching fraction can be sizeable for large Yukawas and moderate KK scales $T$; for small Yukawas the RS contribution is small enough to be invisible in current experimental data.

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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