Chargino contributions to the CP asymmetry in B -> Phi K(S) decay

Details Chargino contributions to the CP asymmetry in B -> Phi K(S) decay Chargino contributions to the CP asymmetry in B -> Phi K(S) decay

2003-06-09

arxiv.org/abs/hep-ph/0306076v1

Phys.Rev. D68 (2003) 095004

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LaTeX, 3.eps Figures

Scientific paper

10.1103/PhysRevD.68.095004

We perform a model independent analysis of the chargino contributions to the CP asymmetry in B -> Phi K(S) process. We use the mass insertion approximation method generalized by including the possibility of a light right-stop. We find that the dominant effect is given by the contributions of the mass insertions deltaU_LL(32) and deltaU_RL(32) to the Wilson coefficient of the chromomagnetic operator. By considering both these contributions simultaneously, the CP asymmetry in B -> Phi K(S) process is significantly reduced and negative values, which are within the 1-sigma experimental range and satisfy the b -> s gamma constraints, can be obtained.

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