Results 11 to 20 of about 29,222 (198)

Prospects for a neutron EDM measurement with an advanced ultracold neutron source at TRIUMF [PDF]

EPJ Web of Conferences, 2022
The TUCAN (TRIUMF Ultra-Cold Advanced Neutron) collaboration is building a new high-intensity ultracold neutron (UCN) source at TRIUMF with the aim of measuring the neutron electric dipole moment (nEDM) with unprecedented precision.
Higuchi Takashi
doaj   +1 more source

One-loop matching of CP-odd four-quark operators to the gradient-flow scheme

Journal of High Energy Physics, 2023
The translation of experimental limits on the neutron electric dipole moment into constraints on heavy CP-violating physics beyond the Standard Model requires knowledge about non-perturbative matrix elements of effective operators, which ideally should ...
Jona Bühler, Peter Stoffer
doaj   +1 more source

THE NEUTRON ELECTRIC DIPOLE MOMENT [PDF]

International Journal of Modern Physics A, 1988
We have made a systematic study of the electric dipole moment (EDM) of neutron Dn in various models of CP violation. We find that (i) in the standard KM model with 3 families, the neutron EDM is in the range 1.4 × 10−33 ≤ |Dn| ≤ 1.6 × 10−31 e.cm , (ii) the two Higgs doublet model has approximately the same value of Dn as the standard model, (iii ...
Bruce H. J. McKellar, Xiao‐gang He, Sandip Pakvasa   +2 more
openaire   +1 more source

The neutron electric dipole moment experiment at the Spallation Neutron Source [PDF]

EPJ Web of Conferences, 2019
Novel experimental techniques are required to make the next big leap in neutron electric dipole moment experimental sensitivity, both in terms of statistics and systematic error control.
Leung K.K.H., Ahmed M., Alarcon R., Aleksandrova A., Baeßler S., Barrón-Palos L., Bartoszek L., Beck D.H., Behzadipour M., Bessuille J., Blatnik M.A., Broering M., Broussard L.J., Busch M., Carr R., Chu P.-H., Cianciolo V., Clayton S.M., Cooper M.D., Crawford C., Currie S.A., Daurer C., Dipert R., Dow K., Dutta D., Efremenko Y., Erickson C.B., Filippone B.W., Fomin N., Gao H., Golub R., Gould C.R., Greene G.L., Haase D.G., Hasell D., Hawari A.I., Hayden M.E., Holley A.T., Holt R.J., Huffman P.R., Ihloff E., Ito T.M., Kelsey J., Kim Y.J., Korobkina E., Korsch W., Lamoreaux S.K., Leggett E., Lipman A., Liu C.-Y., Long J., MacDonald S.W.T., Makela M., Matlashov A., Maxwell J., McCrea M., Mendenhall M., Meyer H.O., Milner R., Mueller P., Nouri N., O'Shaughnessy C.M., Osthelder C., Peng J.-C., Penttila S., Phan N.S., Plaster B., Ramsey J., Rao T., Redwine R.P., Reid A., Saftah A., Seidel G.M., Silvera I.F., Slutsky S., Smith E., Snow W.M., Sondheim W., Sosothikul S., Stanislaus T.D.S., Sun X., Swank C.M., Tang Z., Dinani R. Tavakoli, Tsentalovich E., Vidal C., Wei W., White C.R., Williamson S.E., Yang L., Yao W., Young A.R.   +91 more
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One-loop matching of the CP-odd three-gluon operator to the gradient flow

Physics Letters B, 2023
The calculation of the neutron electric dipole moment within effective field theories for physics beyond the Standard Model requires non-perturbative hadronic matrix elements of effective operators composed of quark and gluon fields.
Òscar L. Crosas, Christopher J. Monahan, Matthew D. Rizik, Andrea Shindler, Peter Stoffer   +4 more
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Neutron electric dipole moment in lattice QCD [PDF]

Physical Review Letters, 1989
We present an exploratory computation of the electric dipole moment of the neutron induced by a {ital CP}-violating {theta} term in the QCD Lagrangian in the framework of quenched lattice QCD. We find {ital d}{sub {ital N}}{approx}{minus}4{times}10{sup {minus}14}{theta}e cm.
, Aoki, , Gocksch
openaire   +2 more sources

Study of neutron fundamental properties in the perfect crystal optics and diffraction [PDF]

EPJ Web of Conferences, 2019
Review of the new crystal-diffraction methods to study fundamental neutron properties and interactions is presented. Features of neutron optics in the crystal without a center of symmetry is discussed as well as the first experimental results and ...
Fedorov V.V., Voronin V.V.
doaj   +1 more source

Estimated performance of the TRIUMF ultracold neutron source and electric dipole moment apparatus [PDF]

EPJ Web of Conferences, 2023
Searches for the permanent electric dipole moment of the neutron (nEDM) provide strong constraints on theories beyond the Standard Model of particle physics.
Sidhu Steve, Schreyer Wolfgang, Vanbergen Sean, Kawasaki Shinsuke, Matsumiya Ryohei, Okamura Takahiro, Picker Ruediger   +6 more
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Correlations between nuclear Schiff moment and electromagnetic measurements

Physics Letters B, 2023
We study the nuclear Schiff moments of 129Xe and 199Hg induced by the nucleon electric dipole moment using large-scale shell model calculations. For 129Xe, we find a linear relation between the leading-order contribution and magnetic moment, which would ...
K. Yanase, N. Shimizu, K. Higashiyama, N. Yoshinaga   +3 more
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Electric dipole moments of neutron-odd nuclei [PDF]

Journal of Physics G: Nuclear and Particle Physics, 2012
The electric dipole moments (EDMs) of neutron-odd nuclei with even protons are systematically evaluated. We first derive the relation between the EDM and the magnetic moment operators by making use of the core polarization scheme. This relation enables us to calculate the EDM of neutron-odd nuclei without any free parameters. From this calculation, one
Fujita, Takehisa, Oshima, Sachiko
openaire   +2 more sources