UNITARITY CONSTRAINTS ON CP NONCONSERVATION IN HIGGS-BOSON EXCHANGE

被引：187
作者：
WEINBERG, S
机构：
[1] Theory Group, Department of Physics, Austin, TX 78712, University of Texas
来源：
PHYSICAL REVIEW D | 1990年 / 42卷 / 03期
关键词：
D O I：
10.1103/PhysRevD.42.860
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Bounds are derived for the dimensionless factors that enter in the violation of CP invariance in Higgs-boson exchange. In particular, for the class of theories with two scalar SU(2)×U(1) doublets [plus any other scalars whose expectation values do not break SU(2)×U(1)], the magnitude of the parameter ImZ2, which appears in the dominant neutral-Higgs-boson-exchange contribution to the neutron electric dipole moment, is bounded by 12(r2+r4)12, where r is a ratio of the magnitudes of scalar vacuum expectation values. It is shown that this bound can actually be reached in realistic models. © 1990 The American Physical Society.
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页码：860 / 866
页数：7
相关论文
共 25 条
[11]   QCD CORRECTIONS TO CP VIOLATION IN HIGGS EXCHANGE [J].
DAI, J ;
DYKSTRA, H .
PHYSICS LETTERS B, 1990, 237 (02) :256-258
[12]   CP VIOLATION FROM 3-GLUON OPERATORS IN THE SUPERSYMMETRIC STANDARD MODEL [J].
DAI, J ;
DYKSTRA, H ;
LEIGH, RG ;
PABAN, S ;
DICUS, DA .
PHYSICS LETTERS B, 1990, 237 (02) :216-220
[13]  
DERUJULA A, CERN TH573590 REP
[14]   NEUTRON ELECTRIC-DIPOLE MOMENT FROM CHARGED-HIGGS-BOSON EXCHANGE [J].
DICUS, DA .
PHYSICAL REVIEW D, 1990, 41 (03) :999-1000
[15]  
DINE M, CCNYHEP8921UTTG6390
[16]  
FISCHLER W, UNPUB
[17]   NATURAL CONSERVATION LAWS FOR NEUTRAL CURRENTS [J].
GLASHOW, SL ;
WEINBERG, S .
PHYSICAL REVIEW D, 1977, 15 (07) :1958-1965
[18]  
KAPLUNOVSKY V, COMMUNICATION
[19]   SPONTANEOUS CP VIOLATION IN THE SU(2)LXU(1)Y MODEL WITH 2 HIGGS DOUBLETS [J].
LIU, J ;
WOLFENSTEIN, L .
NUCLEAR PHYSICS B, 1987, 289 (01) :1-22
[20]  
MUKHOPADHYAYA B, OSU239 OKL STAT REP
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