CP violating effects in 210Fr and prospects for new physics beyond the Standard Model

Journal of High Energy Physics

Nodoka Yamanaka¹  Bijaya Kumar Sahoo²  Bhanu Pratap Das³  Nanako Shitara³  Toshio Watanabe⁴ 

[1] Amherst Center for Fundamental Interactions, Department of Physics, University of Massachusetts;Atomic, Molecular and Optical Physics Division, Physical Research Laboratory;Department of Physics, School of Science, Tokyo Institute of Technology;Global Scientific Information and Computing Center, Tokyo Institute of Technology;

关键词: Beyond Standard Model;    CP violation;    Higgs Physics;    Supersymmetric Standard Model;   

DOI  :  10.1007/JHEP02(2021)124

来源: DOAJ

【 摘 要 】

Abstract We report theoretical results of the electric dipole moment (EDM) of 210Fr which arises from the interaction of the EDM of an electron with the internal electric field in an atom and the scalar-pseudoscalar electron-nucleus interaction; the two dominant sources of CP violation in this atom. Employing the relativistic coupled-cluster theory, we evaluate the enhancement factors for these two CP violating interactions to an accuracy of about 3% and analyze the contributions of the many-body effects. These two quantities in combination with the projected sensitivity of the 210Fr EDM experiment provide constraints on new physics beyond the Standard Model. Particularly, we demonstrate that their precise values are necessary to account for the effect of the bottom quark in models in which the Higgs sector is augmented by nonstandard Yukawa interactions such as the two-Higgs doublet model.

【 授权许可】

Unknown