Bulletin of the American Physical Society
52nd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 66, Number 6
Monday–Friday, May 31–June 4 2021; Virtual; Time Zone: Central Daylight Time, USA
Session M05: Search for Beyond Standard Model Interactions II
2:00 PM–4:00 PM,
Wednesday, June 2, 2021
Co-Sponsoring
Unit:
GPMFC
Chair: Andrew Geraci, Northwestern University
Abstract: M05.00006 : Additions to Standard Model and Atomic Physics *
3:00 PM–3:12 PM
Live
Presenter:
Ulrich D Jentschura
(Missouri University of Science & Technol)
Author:
Ulrich D Jentschura
(Missouri University of Science & Technol)
low-energy addition to the Standard Model have generated widespread attention.
While the experimental findings lack an independent confirmation, they give
incentive, from a more general point of view, to investigate the possible
detection of new particles with a rest mass of 15 to 20 MeV, in atomic physics
high-precision experiments. We find that, in this mass range, the effects will
be most pronounced in the spectra of muonic (not electronic) bound systems,
and, most notably, in the hyperfine structure. While it is a challenge to
separate the effects from nuclear-structure corrections to the hyperfine
splitting, this endeavor is definitely not hopeless. In general, in our work
[Phys.Rev.A 101 (2020) 062503], we derive the effective potentials
corresponding to the exchange of a pseudoscalar particle, and a conceivable
hitherto undetected vector particle, in two-body bound systems.
Comparison with the literature reveals
that the corresponding effective potentials may not have been treated
consistently in the past. Among other things, the role of the Coulomb gauge for
the massive vector propagator and its suitability for bound-state calculations
are being discussed.
*NSF PHY-1710856
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