Detailed discussion of a linear electric field frequency shift induced in confined gases by a magnetic field gradient: Implications for neutron electric-dipole-moment experiments

Journal Article · Tue Mar 01 04:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.032104· OSTI ID:20650334

Lamoreaux, S K ^[1]; Golub, R ^[2]

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1. University of California, Los Alamos National Laboratory, Physics Division, Los Alamos, New Mexico 87545 (United States)
2. Physics Department, North Carolina State University, Raleigh, North Carolina 27606 (United States)

The search for particle electric dipole moments (EDM's) is one of the best places to look for physics beyond the standard model of electroweak interaction because the size of time reversal violation predicted by the standard model is incompatible with present ideas concerning the creation of the baryon-antibaryon asymmetry. As the sensitivity of these EDM searches increases more subtle systematic effects become important. We develop a general analytical approach to describe a systematic effect recently observed in an electric dipole moment experiment using stored particles [J. M. Pendlebury et al., Phys. Rev. A 70, 032102 (2004)]. Our approach is based on the relationship between the systematic frequency shift and the velocity autocorrelation function of the resonating particles. Our results, when applied to well-known limiting forms of the correlation function, are in good agreement with both the limiting cases studied in recent work that employed a numerical and heuristic analysis. Our general approach explains some of the surprising results observed in that work and displays the rich behavior of the shift for intermediate frequencies, which has not been studied previously.

• OSTI ID: 20650334
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 71; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANTIBARYONS
ASYMMETRY
BASIC INTERACTIONS
CORRELATION FUNCTIONS
ELECTRIC DIPOLE MOMENTS
ELECTRIC FIELDS
GASES
MAGNETIC FIELDS
MAGNETIC MOMENTS
NEUTRONS
NUMERICAL ANALYSIS
SENSITIVITY
STANDARD MODEL
T INVARIANCE
VELOCITY