Electromagnetic penguin operators and direct CP violation in K --> pi l^+ l^-

Abstract

Supersymmetric extensions of the Standard Model predict a large enhancement of the Wilson coefficients of the dimension-five electromagnetic penguin operators affecting the direct CP violation in K_L --> pi^0 e^+ e^- and the charge asymmetry in K^\pm --> pi^\pm l^+ l^-. Here we compute the relevant matrix elements in the chiral quark model and compare these with the ones given by lattice calculations

12 pages, JHEP style, gluonic corrections to B_T added

References in corpus (4)

• Observation of the Decay K- -> pi- mu+ mu- and Measurements of the Branching Ratios for K+/- -> pi+/- mu+ mu-
• K_L -> pi0 gamma gamma and the bound on the CP-conserving K_L -> pi0 e+e-
• SUSY contributions to the charge asymmetry in K^+- -> pi^+- l^+ l^- decays
• T-odd correlations in charged Kl4 decays

Cited by in corpus (10)

• Kaon Decays in the Standard Model
• Search for the Rare Decay KL --> pi0 ee
• KL to pi0 e+ e- and KL to pi0 mu+ mu- : A binary star on the stage of flavor physics
• New measurement of the K+- --> pi+-mu+mu- decay
• Precise measurement of the K+- --> pi+-e+e- decay
• Integrable Circular Brane Model and Coulomb Charging at Large Conduction
• New Physics and CP Violation in Hyperon Nonleptonic Decays
• Long-distance contribution to the forward-backward asymmetry in decays K+ --> pi+ l+ l-
• $K\to \pi {\ell }^{+}{\ell }^{-}$ form factor in the Large-N${}_c$ and cut-off regularization method
• Charge asymmetry in K+- --> π+-γγinduced by the electromagnetic penguin operators