Effects of supersymmetric CP violating phases on B \to X_s l^+ l^- and ε_K

Details Effects of supersymmetric CP violating phases on B \to X_s l^+ l^- and ε_K Effects of supersymmetric CP violating phases on B \to X_s l^+ l^- and ε_K

1999-04-09

arxiv.org/abs/hep-ph/9904283v1

Phys.Lett. B462 (1999) 95-102

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 2 figures

Scientific paper

10.1016/S0370-2693(99)00872-2

We consider effects of CP violating phases in \mu and A_t parameters in the effective supersymmetric standard model on B\to X_s l^+ l^- and \epsilon_K. Scanning over the MSSM parameter space with experimental constraints including edm constraints from Chang-Keung-Pilaftsis (CKP) mechanism, we find that the Br(B\to X_s l^+ l^-) can be enhanced by upto \sim 85 % compared to the standard model (SM) prediction, and its correlation with Br(B \to X_s \gamma) is distinctly different from the minimal supergravity scenario. Also we find 1 \lesssim \epsilon_K / \epsilon_K^{SM} \lesssim 1.4, and fully supersymmetric CP violation in K_L \to \pi \pi is not possible. Namely, |\epsilon_K^{\rm SUSY}| \lesssim O(10^{-5}) if the phases of \mu and A_t are the sole origin of CP violation.

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