Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-09-21
Phys.Lett. B609 (2005) 95-101
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 1 figure
Scientific paper
10.1016/j.physletb.2004.12.049
Recent results on the mixing-induced CP asymmetries of B \to \phi K^0 and B \to \eta' K_S measured at B-factories appear to indicate discrepancies from the Standard Model expectation. Explanation of this possible anomaly is given in the context of supersymmetric extension of the Standard Model. It is shown that the present data, if the average of two experiments is taken, implies additional CP violation appearing in the generation mixing of left-handed squarks rather than that of right-handed ones. This explanation is argued to disfavor many mediation mechanisms of supersymmetry breaking, including minimal supergravity, because renormalization group effects via Yukawa interaction are unlikely to generate the desired mass mixing.
Endo Motoi
Mishima Satoshi
Yamaguchi Masahiro
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