Electric dipole moments of neutron and heavy quarks in the B-L symmetric MSSM

Understand

The searching for the electric dipole moments (EDMs) of neutron ($d_n$), $b$ quark ($d_b$) and $c$ quark ($d_c$) gives strict upper bounds on these quantities.

• And recently, new upper bounds on $d_b$, $d_c$ are obtained by the strict limit on $d_n$.
• The models of new physics (NP) with additional CP-violating (CPV) sources are constrained strictly by these EDMs.
• In this work, we focus on the CPV effects on these EDMs in the minimal supersymmetric extension (MSSM) of the SM with local $B-L$ gauge symmetry (B-LSSM).