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

Shitara, Nanako; Yamanaka, Nodoka; Sahoo, Bijaya Kumar; Watanabe, Toshio; Das, Bhanu Pratap

doi:10.1007/JHEP02(2021)124

Regular Article - Theoretical Physics
Open Access
Published: 15 February 2021

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

Nanako Shitara^1,7,
Nodoka Yamanaka^2,3,4,
Bijaya Kumar Sahoo⁵,
Toshio Watanabe⁶ &
…
Bhanu Pratap Das^1,8

Journal of High Energy Physics volume 2021, Article number: 124 (2021) Cite this article

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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.

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Department of Physics, School of Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
Nanako Shitara & Bhanu Pratap Das
Amherst Center for Fundamental Interactions, Department of Physics, University of Massachusetts, Amherst, MA, 01003, USA
Nodoka Yamanaka
Department of Physics, Kennesaw State University, Kennesaw, GA, 30144, USA
Nodoka Yamanaka
Nishina Center for Accelerator-Based Science, RIKEN, Wako, 351-0198, Japan
Nodoka Yamanaka
Atomic, Molecular and Optical Physics Division, Physical Research Laboratory, Navrangpura, Ahmedabad, 380009, India
Bijaya Kumar Sahoo
Global Scientific Information and Computing Center, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
Toshio Watanabe
Department of Physics, University of Colorado, Boulder, CO, 80309, USA
Nanako Shitara
Centre for Quantum Engineering Research and Engineering, TCG CREST, Sector V, Salt Lake, Kolkata, 700091, India
Bhanu Pratap Das

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Nanako Shitara
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Nodoka Yamanaka
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Bijaya Kumar Sahoo
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Toshio Watanabe
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Bhanu Pratap Das
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Shitara, N., Yamanaka, N., Sahoo, B.K. et al. CP violating effects in ²¹⁰Fr and prospects for new physics beyond the Standard Model. J. High Energ. Phys. 2021, 124 (2021). https://doi.org/10.1007/JHEP02(2021)124

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Received: 09 November 2020
Revised: 17 December 2020
Accepted: 04 January 2021
Published: 15 February 2021
DOI: https://doi.org/10.1007/JHEP02(2021)124

Keywords

Beyond Standard Model
CP violation
Higgs Physics
Supersymmetric Standard Model

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

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