scholarly journals Quark electric dipole moment induced by magnetic field

2010 ◽  
Vol 81 (3) ◽  
Author(s):  
P. V. Buividovich ◽  
M. N. Chernodub ◽  
E. V. Luschevskaya ◽  
M. I. Polikarpov
2002 ◽  
Vol 16 (03) ◽  
pp. 57-67
Author(s):  
A. C. AGUIAR PINTO ◽  
M. T. THOMAZ ◽  
R. BRUNO

We consider the dynamics of a dimer of the organic salt N-methyl-M-ethylmorpholinium-tetracyanoquinodimethane [MEM(TCNQ)2] in the presence of an external precessing magnetic field. We derive the influence of Berry's phases on the magnetization and electric dipole moment per site of the organic salt in the adiabatic limit.


2019 ◽  
Vol 219 ◽  
pp. 02001 ◽  
Author(s):  
C. Abel ◽  
N.J. Ayres ◽  
G. Ban ◽  
G. Bison ◽  
K. Bodek ◽  
...  

We report on the strategy used to optimize the sensitivity of our search for a neutron electric dipole moment at the Paul Scherrer Institute. Measurements were made upon ultracold neutrons stored within a single chamber at the heart of our apparatus. A mercury cohabiting magnetometer together with an array of cesium magnetometers were used to monitor the magnetic field, which was controlled and shaped by a series of precision field coils. In addition to details of the setup itself, we describe the chosen path to realize an appropriate balance between achieving the highest statistical sensitivity alongside the necessary control on systematic effects. The resulting irreducible sensitivity is better than 1 × 10−26e cm. This contribution summarizes in a single coherent picture the results of the most recent publications of the collaboration.


2019 ◽  
Vol 219 ◽  
pp. 02003
Author(s):  
Fabian Allmendinger ◽  
Ilhan Engin ◽  
Olivier Grasdijk ◽  
Werner Heil ◽  
Klaus Jungmann ◽  
...  

We report on the first preliminary result of our 129Xe EDM measurement performed by the MIXed collaboration. The aim of this report is to demonstrate the feasibility of a new method to set limits on nuclear EDMs by investigating the EDM of the diamagnetic 129Xe atoms. In our setup, hyperpolarized 3He serves as a comagnetometer needed to suppress magnetic field fluctuations. The free induction decay of the two polarized spin species is directly measured by low noise DC SQUIDs, and the weighted phase difference extracted from these measurements is used to determine a preliminary upper limit on the 129Xe EDM.


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