Institute for Theoretical Particle Physics (TTP)


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preprints:2009:ttp09-14 [2016/03/17 11:03] (current)
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 +   <hidden TTP09-14  CKM ELEMENTS FROM SQUARK-GLUINO LOOPS >  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 $\delta^{d\,LR}_{ij}$, $j&gt;i$, 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 onl 
 + y $Y^q_{33}$ 
 +   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}. 
 + </hidden> 
 +|**Andreas Crivellin**  |  
 +|**     To appear in the proceedings of 44th Rencontres de Moriond EW 2009: Electroweak Interactions and Unified Theories, La Thuile, Italy, 7-14 Mar 2009. **  | 
 +| {{preprints:2009:ttp09-14.pdf|PDF}} {{|PostScript}} [[|arXiv]]   | 
 +| |