Search for a permanent electric-dipole moment using atomic indium

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.030502· OSTI ID:22068609

Sahoo, B K ^[1]; Pandey, R ^[2]; Das, B P ^[2]

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1. Theoretical Physics Division, Physical Research Laboratory, Ahmedabad-380009 (India)
2. Theoretical Astrophysics Group, Indian Astrophysics, Bangalore-560034 (India)

We propose indium (In) as a possible candidate for observing the permanent electric dipole moment (EDM) arising from violations of parity (P) and time-reversal (T) symmetries. This atom has been laser cooled and therefore the measurement of its EDM has the potential of improving on the current best EDM limit for a paramagnetic atom, which comes from thallium. We report the results of our calculations of the EDM enhancement factor due to the electron EDM and the ratio of the atomic EDM to the electron-nucleus scalar-pseudoscalar (S-PS) interaction coupling constant in In within the framework of the relativistic coupled cluster theory. It might be possible to get new limits for the electron EDM and the S-PS CP-violating coupling constant by combining the results of our calculations with the measured value of the EDM of In when it is available. These limits could have important implications for the standard model (SM) of particle physics.

• OSTI ID: 22068609
• Journal Information: Physical Review. A, Vol. 84, Issue 3; Other Information: (c) 2011 American Institute of Physics; Country of input: Syrian Arab Republic; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COUPLING CONSTANTS
CP INVARIANCE
ELECTRIC DIPOLE MOMENTS
ELECTRONS
INDIUM
INTERACTIONS
PARAMAGNETISM
PARITY
POTENTIALS
RELATIVISTIC RANGE
SCALARS
STANDARD MODEL
SYMMETRY
THALLIUM