期刊
PHYSICAL REVIEW LETTERS
卷 93, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.93.101802
关键词
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The two-loop Sudakov form factor is computed in a U(1) model with a massive gauge boson and a U(1)xU(1) model with mass gap. We analyze the result in the context of hard and infrared evolution equations and establish a matching procedure which relates the theories with and without mass gap, setting the stage for the complete calculation of the dominant two-loop corrections to electroweak processes at high energy.
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