文章基本信息

标题：Extended minimal flavour violating MSSM and implications for B physics
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作者：E. Lunghi
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2001
卷号：2001
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The recently reported measurements of the CP asymmetry a K by the BABAR and BELLE collaborations are in good agreement with the standard model prediction. With the anticipated precision in a K at the B factories and hadron colliders, one hopes to pin down any possible deviation from the SM. We discuss an extension of the MFV-supersymmetric models which comfortably accommodates the current measurements of the CP asymmetry a K, but di ers from the SM due to an additional flavour changing structure beyond the CKM matrix. We analyze the compatibility of this model with present data and suggest specic tests in forthcoming experiments in B physics. In addition to the CP-asymmetries in B-meson decays and the B0 s - B0 s mass di erence, we emphasize measurements of the radiative transition b ! d as sensitive probes of the postulated flavour changing structure. Interestingly, the CKM{unitarity analysis in these models also allows solutions with > =2, where = −arg Vub. Such large values of are hinted by the current measurements of the branchig ratios for the decays B ! and B ! K.