Massive loop amplitudes from unitarity

被引：299

作者：

Bern, Z

Morgan, AG

机构：

[1] Department of Physics, Univ. of California at Los Angeles, Los Angeles

来源：

NUCLEAR PHYSICS B | 1996年 / 467卷 / 03期

关键词：

D O I：

10.1016/0550-3213(96)00078-8

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We show, for previously uncalculated examples containing a uniform mass in the loop, that it is possible to obtain complete massive one-loop gauge theory amplitudes solely from unitarity and known ultraviolet or infrared mass singularities. In particular, we calculate four-gluon scattering via massive quark loops in QCD. The contribution of a heavy quark to five-gluon scattering with identical helicities is also presented.

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页码：479 / 509

页数：31

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