Detailed discussion of a linear electric field frequency shift (important for next generation) electric dipole moment searches) induced in confined gases by a magnetic field gradient: Implications for electric dipole moment experiments (II)

摘要

The search for particle electric dipole moments represents a most promisingway to search for physics beyond the standard model. A number of groups areplanning a new generation of experiments using stored gases of various kinds.In order to achieve the target sensitivities it will be necessary to deal withthe systematic error resulting from the interaction of the well-known E x vfield with magnetic field gradients (often referred to as the geometric phaseeffect [9,10]). This interaction produces a frequency shift linear in theelectric field, mimicking an edm. In this work we introduce an analytic modelfor the correlation function which determines the behavior of the frequencyshift [11], and show in detail how it depends on the operating conditions ofthe experiment. We also propose a method to directly measure ths correlationfunction under the exact conditions of a given experiment.