CP VIOLATION IN SEMILEPTONIC TOP QUARK DECAYS IN THE WEINBERG MODEL

被引:37
作者
ATWOOD, D
EILAM, G
SONI, A
MENDEL, RR
MIGNERON, R
机构
[1] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,IL-32000 HAIFA,ISRAEL
[2] BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973
[3] UNIV WESTERN ONTARIO,DEPT APPL MATH,LONDON N6A 5B9,ONTARIO,CANADA
关键词
D O I
10.1103/PhysRevLett.70.1364
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We show that the charged Higgs sector in Weinberg's model for CP violation can cause a large CP violation effect in t --> btaunu(tau). The asymmetry in the partial rate is dominated by contributions such as Z(and gamma)-H+ box diagrams interfering with a (near-resonance) W tree diagram. But far more significant are the asymmetries in the partially integrated rates and in the energy between the tau+ and the tau-. These stem from (near-resonance) W-tree-H+-tree interference.
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页码:1364 / 1367
页数:4
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