The authors derive N3LO soft-gluon corrections for Z gamma production and present approximate N3LO LHC predictions for photon pT and rapidity distributions.
NNLO soft-gluon corrections for the Z-boson and W-boson transverse momentum distributions
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abstract
We present results for the $Z$-boson and $W$-boson transverse momentum ($p_T$) distributions for large $p_T$ at LHC and Tevatron energies. We calculate complete next-to-leading-order (NLO) QCD corrections as well as soft-gluon corrections at next-to-next-to-leading-order (NNLO) to the differential cross section. The NNLO soft-gluon contributions are derived from next-to-next-to-leading-logarithm (NNLL) resummation at two loops. We find enhancements of the $p_T$ distributions and reductions of the scale dependence when the NNLO corrections are included.
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N$^3$LO soft-gluon corrections for $Z\gamma$ production
The authors derive N3LO soft-gluon corrections for Z gamma production and present approximate N3LO LHC predictions for photon pT and rapidity distributions.