The one-loop contributions to c(t) electric dipole moment in the CP-violating BLMSSM

Abstract

In the CP-violating supersymmetric extension of the standard model with local gauged baryon and lepton symmetries (BLMSSM), there are new CP-violating sources which can give new contributions to the quark electric dipole moment (EDM). Considering the CP-violating phases, we analyze the EDMs of the quarks c and t. We take into account the contributions from the one-loop diagrams. The numerical results are analyzed with some assumptions on the relevant parameter space. The numerical results for the c and t EDMs can reach large values.

Electromagnetic dipole moments of charged baryons with bent crystals at the LHC

“…Indirect bounds on charm (beauty) quark EDM are set from different experimental measurements and span over several orders of magnitude, i.e. charm (beauty) EDM < ∼ 10 −15 − 4.4 × 10 −17 e cm [11,12,13,14,15] ( < ∼ 2 × 10 −12 − 2 × 10 −17 e cm [13,14,15,16]), depending on different models and assumptions. As an example, an indirect bound on the charm quark EDM is derived from the experimental limit on the neutron EDM to be < ∼ 4.4 × 10 −17 e cm [11], and a charm quark EDM of comparable magnitude is possible in extensions of the SM [12].…”

“…charm (beauty) EDM < ∼ 10 −15 − 4.4 × 10 −17 e cm [11,12,13,14,15] ( < ∼ 2 × 10 −12 − 2 × 10 −17 e cm [13,14,15,16]), depending on different models and assumptions. As an example, an indirect bound on the charm quark EDM is derived from the experimental limit on the neutron EDM to be < ∼ 4.4 × 10 −17 e cm [11], and a charm quark EDM of comparable magnitude is possible in extensions of the SM [12]. For the beauty quark, indirect EDM limits < ∼ 2 × 10 −12 e cm [13] and < ∼ 1.22 × 10 −13 e cm [16] are derived, and a relatively large beauty quark EDM is possible in presence of new physics.…”

Improved bounds on heavy quark electric dipole moments

“…a 30% stronger bounds for M NP = 10 TeV. The new constraints for the charm and bottom quark EDMs are in tension with the predictions of different theories beyond the standard model [29][30][31][32] and will provide valuable input for future phenomenological analysis of NP models.…”

Electric dipole moments of neutron and heavy quarks in the B-LSSM

“…[9], while the SM predicts a much smaller d n < 10 −31 e.cm [11]. There are similarly bounds on the c quark and t quark EDMs |d c | < 5.0 × 10 −17 e.cm and |d t | < 3.06 × 10 −15 e.cm [10].…”