Gluino-squark contributions to CP violations in the kaon system

Abstract

Recently it was shown, within the mass insertion approximation (MIA), that the gluino mediated flavor changing neutral current (FCNC) interactions can saturate both epsilon_K and Re(epsilon'/epsilon_K) even for the real Cabibbo-Kobayashi-Maskawa (CKM) matrix through a single CP violating parameter (delta^d_12)_LL. In this work, we extend our previous analysis to the nonvanishing KM phase, and to the effective SUSY model where the MIA is no longer a good approximation. In our model, epsilon_K and B0 - B0 bar mixing can receive significant SUSY contributions. Therefore the usual constraints on rho and eta in the Wolfenstein parametrization of the CKM matrix can be relaxed except for the |V_ub/V_cb| from the semileptonic b -> u transition. This affects K -> pi nu nu bar and K_L -> mu+ mu- indirectly, even if they are not directly induced by gluino-mediated FCNC, while K_L -> pi0 e+ e- is influenced both directly and indirectly. Differences between our model and other SUSY models enhancing Re(epsilon'/epsilon_K) are discussed in detail.

29 pages, 6 figures, 1 table; typos and references corrected; version to appear in NPB

References in corpus (2)

• Measurement of CP-violating asymmetries in B0 decays to CP eigenstates
• Measurement of the CP Violation Parameter sin(2phi_1) in B^0_d Meson Decays

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• B_s - \bar{B}_s mixing in the MSSM scenario with large flavor mixing in the LL/RR sector
• Implications of the measurements of B_s - B_s bar mixing on SUSY models
• The B-->pi K Puzzle and Supersymmetry
• Solving the SUSY CP problem with flavor breaking F-terms
• Studying of B_s^0-\bar{B}_s^0 mixing and B_{s}\to K^{(*)-}K^{(*)+} decays within supersymmetry
• Delta M_K and epsilon_K in the left-right supersymmetric model
• Studying of Bs --> K(*)-pi+, K(*)-rho+ decays within supersymmetry
• Charge asymmetry in K+- --> π+-γγinduced by the electromagnetic penguin operators
• CP violations in the K and B meson systems in the SUSY models with (S_3)^3 flavor symmetry
• Time dependent CP asymmetry in $B^0\to {\rho }^0\gamma$ decay to probe the origin of CP violation
• Chargino contributions to ${\epsilon }^{\prime }/\epsilon$ in the left-right supersymmetric model