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  • Letter
  • Open Access

New physics constraints from atomic parity violation in Cs133

B. K. Sahoo1,*, B. P. Das2,3, and H. Spiesberger4

  • 1Atomic, Molecular and Optical Physics Division, Physical Research Laboratory, Navrangpura, Ahmedabad-380009, India
  • 2Department of Physics, School of Science, Tokyo Institute of Technology, 2-1-2-1-H86 Ookayama Meguro-ku, Tokyo 152-8550, Japan
  • 3Centre for Quantum Engineering Research and Education, TCG Centres for Research in Science and Technology, Sector V, Salt Lake, Kolkata 70091, India
  • 4PRISMA+ Cluster of Excellence, Institut für Physik, Johannes Gutenberg-Universität, D-55099 Mainz, Germany

  • *bijaya@prl.res.in
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Phys. Rev. D 103, L111303 – Published 25 June, 2021

DOI: https://doi.org/10.1103/PhysRevD.103.L111303

Abstract

Our improved calculation of the nuclear spin-independent parity violating electric dipole transition amplitude (E1PV) for 6sS21/2−7sS21/2 in Cs133 in combination with the most accurate (0.3%) measurement of this quantity yields a new value for the nuclear weak charge QW=−73.71(26)ex(23)th against the Standard Model (SM) prediction QWSM=−73.23(1). The advances in our calculation of E1PV have been achieved by using a variant of the perturbed relativistic coupled-cluster theory, which treats the contributions of the core, valence, and excited states to E1PV on the same footing unlike the previous high precision calculations. Furthermore, this approach resolves the controversy regarding the sign of the core correlation effects. We discuss the implications of the deviation of our result for QW from the SM value by considering different scenarios of new physics.

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Comments & Replies

Comment on “New physics constraints from atomic parity violation in Cs133”

B. M. Roberts and J. S. M. Ginges
Phys. Rev. D 105, 018301 (2022)

Reply to “Comment on ‘New physics constraints from atomic parity violation in Cs133’”

B. K. Sahoo, B. P. Das, and H. Spiesberger
Phys. Rev. D 105, 018302 (2022)

Article Text

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Phys. Rev. D 103, L111303– Published 25 June, 2021
  • Received 26 January 2021
  • Accepted 29 April 2021
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