New physics in ε' from chromomagnetic contributions and limits on Left-Right symmetry

Abstract

New physics in the chromomagnetic flavor changing transition s->dg* can avoid the strong GIM suppression of the Standard Model and lead to large contributions to CP-violating observables, in particular to the epsilon' parameter, that we address here. We discuss the case of the Left-Right symmetric models, where this contribution implies bounds on the phases of the right-handed quark mixing matrix, or in generic models with large phases a strong bound on the Left-Right symmetry scale. To the leading order, a numeric formula for epsilon' as a function of the short-distance coefficients for a wide class of models of new physics is given.

12 pages, Eq. 12 and related numerics amended

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Cited by in corpus (21)

• Towards the Identification of New Physics through Quark Flavour Violating Processes
• Present and Future K and B Meson Mixing Constraints on TeV Scale Left-Right Symmetry
• Left-Right Symmetry: from Majorana to Dirac
• Lepton Number Violation in Higgs Decay at LHC
• Improved anatomy of epsilon'/epsilon in the Standard Model
• Keung-Senjanović process at LHC: from LNV to displaced vertices to invisible decays
• Higgs Sector of the Left-Right Symmetric Theory
• Strong P invariance, neutron EDM and minimal Left-Right parity at LHC
• An ${\epsilon }^{\prime }$ improvement from right-handed currents
• Perturbativity and mass scales of Left-Right Higgs bosons
• Kaon CP violation and neutron EDM in the minimal left-right symmetric model
• ${\epsilon }^{\prime }/\epsilon$ from charged-Higgs-induced gluonic dipole operators
• Left-right models with light neutrino mass prediction and dominant neutrinoless double beta decay rate
• Viability of minimal left-right models with discrete symmetries
• Disentangling Seesaw in the Minimal Left-Right Symmetric Model
• Axion-mediated forces, CP violation and left-right interactions
• Left-Right Symmetry at FCC-hh
• K to ππ hadronic matrix elements of left-right current-current operators
• ${\epsilon }_K$ and ${\epsilon }^{\prime }/\epsilon$ in a diquark model
• Quark mixing with soft breaking of the parity in the minimal Left-Right model
• Parity from gauge symmetry