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arXiv 0905.3130hep-ph
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来自夸克Gluino环的CKM元素

CKM Elements from Squark Gluino Loops

Andreas Crivellin

摘要:

我目前的结果有限重整化的Cabibbo小林Maskawa(CKM)矩阵引起的胶子-squark图在MSSM与非最小源的味道违反。随后,我推导出的味-关-对角元素的squark质量矩阵的界限,要求辐射校正CKM元素不超过实验值。如果胶子和夸克的质量大于500 $ \gev$,那么对相应的无量纲量$δ^{d LR}_{ij}$、$j>i$的约束要比从中性流变味过程得到的边界强。结果意味着,它仍然是可能的,以产生所有观察到的味道违反从软超临界破坏条款,而不冲突与当今的数据FCNC过程。因此,我们重新评估的想法,只有$Y^q_{33}$是不同于零的树级和所有其他Yukawa耦合产生辐射。该模型解决了超对称性问题以及超对称性CP问题。结果发表在\cite{Crivellin:2008mq}上。

英文摘要:

I present results for the finite renormalization of the Cabibbo-Kobayashi-Maskawa (CKM) matrix induced by gluino--squark diagrams in the MSSM with non-minimal sources of flavour violation. Subsequently I derive bounds on the flavour--off--diagonal elements of the squark mass matrices by requiring that the radiative corrections to the CKM elements do not exceed the experimental values. The constraints on the associated dimensionless quantities $δ^{d LR}_{ij}$, $j>i$, are stronger than the bounds from flavour-changing neutral current (FCNC) processes if gluino and squarks are heavier than 500$ \gev$. The results imply that it is still possible to generate all observed flavour violation from the soft supersymmetry-breaking terms without conflicting with present-day data on FCNC processes. Therefore we reappraise the idea that only $Y^q_{33}$ is different from zero at tree-level and all other Yukawa couplings are generated radiatively. This model solves the SUSY flavour as well as the SUSY CP problem. The presented results are published in \cite{Crivellin:2008mq}.

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