LI, CS , CHONGQING UNIV,DEPT APPL PHYS,SICHUAN 630044,PEOPLES R CHINA.
部门归属:
CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,BEIJING 100080,PEOPLES R CHINA; ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA; HENAN FUNDAMENTAL & APPL SCI INST,HENAN 450052,PEOPLES R CHINA
英文摘要:
The electroweak radiative corrections to O(alpham(t)2/m(W)2) to the tree-level process t --> H+b are calculated for a heavy top quark. The corrections imply a few to 10% reduction in the partial width relative to the tree-level result, depending strongly on the parameter tanbeta and on the top-quark mass. For some given values of tanbeta and m(t), the combined effect of such electroweak corrections and the QCD corrections can result in a approximately 17% reduction in the width.
