An Improved Search for the Neutron Electric Dipole Moment
| Title: | An Improved Search for the Neutron Electric Dipole Moment |
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| Authors: | Burghoff, M., Schnabel, A., Ban, G., Lefort, T., Lemiere, Y., Naviliat-Cuncic, O., Pierre, E., Quemener, G., Zejma, J., Kasprzak, M., Knowles, P., Weis, A., Pignol, G., Rebreyend, D., Afach, S., Bison, G., Becker, J., Severijns, N., Roccia, S., Plonka-Spehr, C., Zennerz, J., Heil, W., Koch, H. C., Kraft, A., Lauer, T., Sobolev, Yu., Chowdhuri, Z., Krempel, J., Lauss, B., Mtchedlishvili, A., Schmidt-Wellenburg, P., Zsigmond, G., Fertl, M., Franke, B., Horras, M., Kirch, K., Piegsa, F. |
| Publication Year: | 2011 |
| Collection: | Nuclear Experiment Physics (Other) |
| Subject Terms: | Nuclear Experiment, Physics - Instrumentation and Detectors |
| More Details: | A permanent electric dipole moment of fundamental spin-1/2 particles violates both parity (P) and time re- versal (T) symmetry, and hence, also charge-parity (CP) symmetry since there is no sign of CPT-violation. The search for a neutron electric dipole moment (nEDM) probes CP violation within and beyond the Stan- dard Model. The experiment, set up at the Paul Scherrer Institute (PSI), an improved, upgraded version of the apparatus which provided the current best experimental limit, dn < 2.9E-26 ecm (90% C.L.), by the RAL/Sussex/ILL collaboration: Baker et al., Phys. Rev. Lett. 97, 131801 (2006). In the next two years we aim to improve the sensitivity of the apparatus to sigma(dn) = 2.6E-27 ecm corresponding to an upper limit of dn < 5E-27 ecm (95% C.L.), in case for a null result. In parallel the collaboration works on the design of a new apparatus to further increase the sensitivity to sigma(dn) = 2.6E-28 ecm. Comment: APS Division for particles and fields, Conference Proceedings, Two figures |
| Document Type: | Working Paper |
| Access URL: | http://arxiv.org/abs/1110.1505 |
| Accession Number: | edsarx.1110.1505 |
| Database: | arXiv |
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