13 Mar 2020
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Holguin Jack
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Forshaw Jeffrey R.
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Plätzer Simon
A new parton shower algorithm has been presented with the claim of providing
soft-gluon resummation at `full colour' (arXiv:2001.11492). In this paper we
show that the algorithm does not succeed in this goal...We show that full colour
accuracy requires the Sudakov factors to be defined at amplitude level and that
the simple parton-shower unitarity argument employed in arXiv:2001.11492 is not
sufficient.(read more)