2020/11/17 by Ben Yan, Yan, Ben, Shu-Min Zhao +3
Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.2011.08533
The first two authors are equally contributed
openalex publication_date 2020/11/17 · arxiv created 2021/11/01 · arxiv updated 2021/11/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study and analyze the electric dipole moments (EDMs) of neutron and heavy quarks c, t in a CP-violating (CPV) supersymmetric U(1) extension of the standard model called U(1)XSSM, whose local gauge group is U(1)X× SU(3)C× SU(2)L × U(1)Y. The contributions from the one loop diagrams and the Weinberg operators are taken into account with the new introduced CPV phases beyond the minimum supersymmetric standard model(MSSM) being non-zero. Our numerical results show that in U(1)XSSM the neutron EDM can be smaller than its experimental upper bound 1.8×10-26 e⋅cm without a small CPV phase. The magnitudes of EDMs of heavy quarks c and t can reach 10-24 e⋅cm. and 10-22 e⋅cm respectively. This is favorable to the study of CPV.