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Recently, the leading soft gluon theorem with single soft emission was shown to be the Ward identity of a two-dimensional G-Kac-Moody symmetry. In this paper, we show that the leading soft gluon theorem can be interpreted as the Ward identity for the asymptotic symmetries of non-Abelian gauge theory. We further argue that the subleading soft gluon theorem can follow from the same symmetry.
Mao et al. (Tue,) studied this question.
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