EVEN LARGER CONTRIBUTIONS TO THE NEUTRON ELECTRIC-DIPOLE MOMENT

被引:35
作者
DERUJULA, A
GAVELA, MB
PENE, O
VEGAS, FJ
机构
[1] UNIV AUTONOMA MADRID,E-28049 MADRID 34,SPAIN
[2] UNIV PARIS 11,F-91405 ORSAY,FRANCE
关键词
D O I
10.1016/0370-2693(90)90705-B
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Constraints on theories of CP-violation, from limits on the neutron electric dipole moment, and mediated by a CP-odd three-gluon operator, are current best sellers. We introduce novel CP-odd operators involving one photon and three gluons. We find that effects mediated by these operators result on bounds on supersymmetry an order of magnitude more stringent than earlier results: they are the tightest known bounds. For left-right models we derive richer limits than previously found. We also recalculate the anomalous dimensions of the three-gluon operator and find them to be minus those originally used; this weakens considerably its strictures on theory, though it still mediates the dominant effect in multi-Higgs models. © 1990.
引用
收藏
页码:640 / 648
页数:9
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