Resummation of Hadroproduction Cross-sections at High Energy

Abstract

We reconsider the high energy resummation of photoproduction, electroproduction and hadroproduction cross-sections, in the light of recent progress in the resummation of perturbative parton evolution to NLO in logarithms of Q^2 and x. We show in particular that the when the coupling runs the dramatic enhancements seen at fixed coupling, due to infrared singularities in the partonic cross-sections, are substantially reduced, to the extent that they are largely accounted for by the usual NLO and NNLO perturbative corrections. This leads to a novel explanation of the large K-factors commonly found in perturbative calculations of hadroproduction cross-sections. We give numerical estimates of high energy resummation effects for inclusive B-production, inclusive jets, Drell-Yan and vector boson production, along with their rapidity distributions. We find that resummation modifies the B-production cross-section at the LHC by at most 15%, but that the enhancement of gluonic W-production may be as large as 50% at large rapidities.

49 pages, 25 figures, version to be published in Nucl Phys B

References in corpus (6)

• Perturbatively Stable Resummed Small x Evolution Kernels
• A Global Fit to Scattering Data with NLL BFKL Resummations
• BFKL at Next-to-Next-to-Leading Order
• Minimal Subtraction vs. Physical Factorisation Schemes in Small-x QCD
• All Order Running Coupling BFKL Evolution from GLAP (and vice-versa)
• Progress on neural parton distributions

Cited by in corpus (46)

• Parton distributions from high-precision collider data
• Parton distributions with QED corrections
• Higgs production via gluon-gluon fusion with finite top mass beyond next-to-leading order
• Parton distributions with small-x resummation: evidence for BFKL dynamics in HERA data
• Higgs production in gluon fusion beyond NNLO
• Small x Resummation with Quarks: Deep-Inelastic Scattering
• Snowmass 2021 whitepaper: Proton structure at the precision frontier
• QCD resummation for hadronic final states
• Small-$x$ resummation from HELL
• Parton distributions with threshold resummation
• Deviations from NLO QCD evolution in inclusive HERA data
• Combining $Q_T$ and small-$x$ resummations
• Top Quark Pair Production beyond NNLO
• High Energy Resummation of Drell-Yan Processes
• Double resummation for Higgs production
• HERA data and DGLAP evolution: theory and phenomenology
• Small-$x$ phenomenology at the LHC and beyond: HELL 3.0 and the case of the Higgs cross section
• Small x resummation of rapidity distributions: the case of Higgs production
• Towards parton distribution functions with small-$x$ resummation: HELL 2.0
• High-energy emissions of light mesons plus heavy flavor at the LHC and the Forward Physics Facility
• The next-to-leading order Higgs impact factor in the infinite top-mass limit
• Recent results on unintegrated parton distributions
• Ultraforward production of a charmed hadron plus a Higgs boson in unpolarized proton collisions
• Transition between soft physics at LHC and low-x physics at HERA
• Mueller-Navelet jets at the LHC: hunting data with azimuthal distributions
• High-energy resummation in direct photon production
• Vector quarkonia at the LHC with JETHAD: A high-energy viewpoint
• Emergence of high-energy dynamics from cascade-baryon detections at the LHC
• High energy resummation of transverse momentum distributions:Higgs in gluon fusion
• Differential heavy quark pair production at small $x$
• What did HERA teach us about the structure of the proton?
• High-energy QCD dynamics from bottom flavor fragmentation at the Hi-Lumi LHC
• Exotic tetraquarks at the HL-LHC with JETHAD: A high-energy viewpoint
• Four-loop splitting functions at small $x$
• High energy resummation of direct photon production at hadronic colliders
• Can we trust small x resummation?
• QCD effective charges and the structure function $F_2$ at small-$x$: Higher twist effects
• Towards small x resummed DIS phenomenology
• Triply Heavy $\Omega$ Baryons with JETHAD: A High-Energy Viewpoint
• Phenomenology of kt-factorization for inclusive top quark pair production at hadron colliders
• Tetraquark-Jet Systems at the High-Luminosity LHC
• Structure Function Resummation in small-x QCD
• High-energy resummation at the LHC: the case of Drell-Yan processes
• Towards small-$x$ resummed parton distribution functions
• The heavy tetra-quark states after the discovery of tetra-charm states
• The Forward Physics Facility at the High-Luminosity LHC