GAUGE-INVARIANT 3-BOSON VERTICES IN THE STANDARD MODEL AND THE STATIC PROPERTIES OF THE W

被引:66
作者
PAPAVASSILIOU, J
PHILIPPIDES, K
机构
[1] Department of Physics, New York University, New York, NY 10003
来源
PHYSICAL REVIEW D | 1993年 / 48卷 / 09期
关键词
D O I
10.1103/PhysRevD.48.4255
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We use the S-matrix pinch technique to derive to one-loop order gauge-independent gammaW+W- and ZW+W- vertices in the context of the standard model, with all three incoming momenta off shell. We show that the gammaW+W- vertex so constructed is related to the gauge-independent W self-energy, derived by Degrassi and Sirlin, by a very simple QED-like Ward identity. The same results are obtained by the pinch technique applied directly to the process e+e- --> W+W-. Explicit calculations give rise to expressions for static properties of the W gauge bosons such as the magnetic dipole and electric quadrupole moments, which satisfy the crucial properties of infrared finiteness as well as gauge independence.
引用
收藏
页码:4255 / 4268
页数:14
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