Electric dipole moments of neutron and heavy quarks c, t in CP violating $U(1)_X$SSM

Ben Yan; Shu-Min Zhao; Tai-Fu Feng

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arXiv · 2011.08533

Electric dipole moments of neutron and heavy quarks c, t in CP violating $U(1)_X$SSM

Ben Yan·Shu-Min Zhao·Tai-Fu Feng

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Abstract

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 $U(1)_X$SSM, whose local gauge group is $U(1)_X\times SU(3)_C\times SU(2)_L \times U(1)_Y$. 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 $U(1)_X$SSM the neutron EDM can be smaller than its experimental upper bound $1.8\times10^{-26}$ e$\cdot$cm without a small CPV phase. The magnitudes of EDMs of heavy quarks c and t can reach $10^{-24}$ e$\cdot$cm. and $10^{-22}$ e$\cdot$cm respectively. This is favorable to the study of CPV.

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BibTeX RIS

Ben Yan, Shu-Min Zhao, Tai-Fu Feng. 2020-11-17. Electric dipole moments of neutron and heavy quarks c, t in CP violating $U(1)_X$SSM. https://arxiv.org/abs/2011.08533

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