A bound on the charm chromo-EDM and its implications

Abstract

We derive bounds on the electric and chromo-electric dipole moments of the charm quark. The second one turns out to be particularly strong, and we quantify its impact on models that allow for a sizeable flavour violation in the up quark sector, like flavour alignment and Generic U(2)^3. In particular we show how the bounds coming from the charm and up CEDMs constrain the size of new physics contributions to direct flavour violation in D decays. We also specialize our analysis to the cases of Supersymmetry with split families and composite Higgs models. The results exposed in this paper motivate both an increase in experimental sensitivity to fundamental hadronic dipoles, and a further exploration of the SM contribution to flavour violating D decays.

16 pages, 1 figure. v2: comments and references added, published in JHEP. v3: oversights fixed in two equations, all the rest unchanged

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• Violations of discrete space-time symmetries in chiral effective field theory
• Progress towards the first measurement of charm baryon dipole moments
• Searching for t->c(u)h with dipole moments
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• Simple model for large CP violation in charm decays, B-physics anomalies, muon g-2, and Dark Matter
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• Split SUSY Radiates Flavor
• Improved indirect limits on charm and bottom quark EDMs
• Reevaluation of heavy-fermion-induced electron EDM at three loops
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• A Final Word on FCNC-Baryogenesis from Two Higgs Doublets
• The one loop contributions to c(t) electric dipole moment in the CP violating BLMSSM
• Minimal Flavor Violation and SU(5)-unification
• Constraints of chromoelectric dipole moments to natural SUSY type sfermion spectrum
• Weinberg operator contribution to the CP-odd nuclear force in the quark model
• Electric dipole moments from the perspective of a scalar triplet and singlet extension of the MSSM: A study of neutrons, electrons, mercury, and b and c quarks
• Contribution of the Weinberg-type Operator to atomic and nuclear electric dipole moments
• Beautiful and charming chromodipole moments
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