Chargino Contributions in B → φK S CP Asymmetry

نویسنده

  • Yili Wang
چکیده

CP asymmetry in B → φKS decay is studied in a special context of supersymmetry theories, in which the charginos play an important role. We find that except gluino, chargino can also give large contributions to CP asymmetry in B → φKS decay. After considering the constraints from B → J/ψKS decay, we study three special scenarios: (a). Large mixing on left-handed charm and top squarks(LL mixing); (b). Large mixing on right-handed charm and top squarks (RR mixing); (c). Large mixing both on left-handed charmtop squark and right-handed charm-top squark(LL+RR mixing). We show quantitatively that because of large squark mixing within second and third generations, an O(1) effect on CP violation in B → φKS is possible.

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تاریخ انتشار 2003