A new subtraction scheme at NLO exploiting the privilege of kT-factorization
arxiv(2023)
摘要
We present a subtraction method for the calculation of real-radiation
integrals at NLO in hybrid kT-factorization. The main difference with existing
methods for collinear factorization is that we subtract the momentum recoil,
occurring due to the mapping from an (n+1)-particle phase space to an
n-particle phase space, from the initial-state momenta, instead of distributing
it over the final-state momenta.
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