Recent measurements of CP asymmetries of B → φ K0 and B → η′ KS at B-factories suggest new CP violation in left-handed squark mixing

Motoi Endo, Satoshi Mishima, Masahiro Yamaguchi

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Recent results on the mixing-induced CP asymmetries of B→φK 0 and B→η′KS 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.

Original languageEnglish
Pages (from-to)95-101
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume609
Issue number1-2
DOIs
Publication statusPublished - 2005 Mar 3

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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