A new subtraction scheme at NLO exploiting the privilege of kT-factorization
Journal of High Energy Physics(2024)
Abstract
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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Key words
Higher-Order Perturbative Calculations,Deep Inelastic Scattering or Small-x Physics,Factorization,Renormalization Group
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