NNLL resummation shows that scale variations drastically underestimate higher-order uncertainties in NNLO inclusive jet cross sections for typical jet radii, rendering such estimates unreliable.
Boughezal, et al.,Z-boson production in association with a jet at next-to-next-to-leading order in perturbative QCD,Phys
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abstract
We present the first complete calculation of Z-boson production in association with a jet in hadronic collisions through next-to-next-to-leading order in perturbative QCD. Our computation uses the recently-proposed N-jettiness subtraction scheme to regulate the infrared divergences that appear in the real-emission contributions. We present phenomenological results for 13 TeV proton-proton collisions with fully realistic fiducial cuts on the final-state particles. The remaining theoretical uncertainties after the inclusion of our calculations are at the percent-level, making the Z+jet channel ready for precision studies at the LHC Run II.
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The report reviews progress since 2021 in fixed-order computations for LHC applications and identifies processes requiring missing higher-order corrections to match anticipated experimental precision.
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Les Houches study on inclusive jet production at NNLO+NNLL
NNLL resummation shows that scale variations drastically underestimate higher-order uncertainties in NNLO inclusive jet cross sections for typical jet radii, rendering such estimates unreliable.
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Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
The report reviews progress since 2021 in fixed-order computations for LHC applications and identifies processes requiring missing higher-order corrections to match anticipated experimental precision.