Revised experimental upper limit on the electric dipole moment of the neutron

Pendlebury, J.M.; Afach, S.; Ayres, N.J.; Baker, C.A.; Ban, G.; Bison, G.; Bodek, K.; Burghoff, M.; Geltenbort, P.; Green, K.; Griffith, W.C.; Van Der Grinten, M.; Grujić, Z.D.; Harris, P.G.; Hélaine, V.; Iaydjiev, P.; Ivanov, S.N.; Kasprzak, M.; Kermaidic, Y.; Kirch, K.; Koch, H.C.; Komposch, S.; Kozela, A.; Krempel, J.; Lauss, B.; Lefort, T.; Lemière, Y.; May, D.J.R.; Musgrave, M.; Naviliat-Cuncic, O.; Piegsa, F.M.; Pignol, G.; Prashanth, P.N.; Quéméner, G.; Rawlik, M.; Rebreyend, D.; Richardson, J.D.; Ries, D.; Roccia, S.; Rozpedzik, D.; Schnabel, A.; Schmidt-Wellenburg, P.; Severijns, N.; Shiers, D.; Thorne, J.A.; Weis, A.; Winston, O.J.; Wursten, E.; Zejma, J.; Zsigmond, G.

doi:10.1103/PhysRevD.92.092003

Revised experimental upper limit on the electric dipole moment of the neutron

Pendlebury JM, Afach S, Ayres NJ, Baker CA, Ban G, Bison G, Bodek K, Burghoff M, Geltenbort P, Green K, Griffith WC, Van Der Grinten M, Grujić ZD, Harris PG, Hélaine V, Iaydjiev P, Ivanov SN, Kasprzak M, Kermaidic Y, Kirch K, Koch HC, Komposch S, Kozela A, Krempel J, Lauss B, Lefort T, Lemière Y, May DJR, Musgrave M, Naviliat-Cuncic O, Piegsa FM, Pignol G, Prashanth PN, Quéméner G, Rawlik M, Rebreyend D, Richardson JD, Ries D, Roccia S, Rozpedzik D, Schnabel A, Schmidt-Wellenburg P, Severijns N, Shiers D, Thorne JA, Weis A, Winston OJ, Wursten E, Zejma J & Zsigmond G

Citation

Pendlebury, J. M., Afach, S., Ayres, N. J., Baker, C. A., Ban, G., Bison, G., … Zsigmond, G. (2015). Revised experimental upper limit on the electric dipole moment of the neutron. Physical Review D: Particles and fields, 92(9), 092003 (22 pp.). https://doi.org/10.1103/PhysRevD.92.092003

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:7560

We present for the first time a detailed and comprehensive analysis of the experimental results that set the current world sensitivity limit on the magnitude of the electric dipole moment (EDM) of the neutron. We have extended and enhanced our earlier analysis to include recent developments in the understanding of the effects of gravity in depolarizing ultracold neutrons; an improved calculation of the spectrum of the neutrons; and conservative estimates of other possible systematic errors, which are also shown to be consistent with more recent measurements undertaken with the apparatus. We obtain a net result of d_n = -0.21 ± 1.82×10^-26e cm, which may be interpreted as a slightly revised upper limit on the magnitude of the EDM of 3.0×10^-26e cm (90% C.L.) or 3.6×10^-26e cm (95% C.L.).

Details

Publication Type

Journal Article

Title

Revised experimental upper limit on the electric dipole moment of the neutron

Author(s)

Pendlebury, J.M.

Afach, S. (0000 PSI)

Ayres, N.J.

Baker, C.A.

Ban, G.

Bison, G. (3204 UCN Physics)