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标题：Flavor-Change with Ultra-Light Sbottom and Gluinos
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作者：T. Becher ; S. Braig ; M. Neubert 等
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：Implications of a 2−5:5 GeV sbottom and 12−16 GeV gluino masses for rare B decay phenomenology are discussed. An e ective Hamiltonian is constructed in which the gluinos are integrated out and a ~b squark remains among the light flavor degrees of freedom. Restrictive constraints come from b ! s and b ! sg, but they allow a substantially enhanced inclusive b decay rate into charmless hadronic nal states, and O(10%) direct CP asymmetries in B ! Xs and B ! K0 decays, which are an order of magnitude larger than in the Standard Model. New contributions to Bs mixing are negligible but signicant e ects in Bd mixing may be possible.