NEUTRON ELECTRIC-DIPOLE MOMENT IN THE STANDARD MODEL - COMPLETE 3-LOOP CALCULATION OF THE VALENCE QUARK CONTRIBUTIONS

Authors
CZARNECKI A KRAUSE B
Citation
A. Czarnecki et B. Krause, NEUTRON ELECTRIC-DIPOLE MOMENT IN THE STANDARD MODEL - COMPLETE 3-LOOP CALCULATION OF THE VALENCE QUARK CONTRIBUTIONS, Physical review letters, 78(23), 1997, pp. 4339-4342
Citations number
31
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
23
Year of publication
1997
Pages
4339 - 4342
Database
ISI
SICI code
0031-9007(1997)78:23<4339:NEMITS>2.0.ZU;2-8
Abstract
We present a complete three-loop calculation of the electric dipole mo ment of the u and d quarks in the standard model. For the d quark, mor e relevant for the experimentally important neutron electric dipole mo ment, we find cancellations which lead to an order of magnitude suppre ssion compared with previous estimates.