On the NLO QCD Corrections to Gluon-Initiated ZH Production

Abstract

We compute the QCD corrections at next-to-leading order for the process $gg\to ZH$, including both the virtual two-loop terms and real-emission contributions. The two-loop box diagrams in the virtual corrections are approximated analytically over the complete phase space, combining the results of an expansion in the limit of small transverse momentum and an expansion in the regime of high energy. We obtain both inclusive and differential results for the cross section. We find that the NLO QCD corrections are of the same size as the LO contribution up to $ZH$ invariant masses close to 1 TeV, but they increase significantly when higher energies are considered, due to a class of real-emission diagrams in which the $Z$ boson is radiated from an open quark line. Finally, we estimate the uncertainty due to the renormalization scheme used for the top-quark mass both on the total and differential cross section.

arXiv comment19 pages, 6 figures; references added

References in corpus (38)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• A General Algorithm for Calculating Jet Cross Sections in NLO QCD
• Parton distributions from high-precision collider data
• Vector boson pair production at the LHC
• LiteRed 1.4: a powerful tool for the reduction of the multiloop integrals
• The three loop relation between the \bar {MS} and the pole quark masses
• NNLO QCD corrections to the Higgs-strahlung processes at hadron colliders
• Quark Mass Anomalous Dimension to alpha_s**4
• Electroweak Radiative Corrections to Associated WH and ZH Production at Hadron Colliders
• Color singlet production at NNLO in MCFM
• Recola2: REcursive Computation of One-Loop Amplitudes 2
• vh@nnlo - Higgs Strahlung at hadron colliders
• Top-Quark Mediated Effects in Hadronic Higgs-Strahlung
• Electroweak corrections to Higgs-strahlung off W/Z bosons at the Tevatron and the LHC with HAWK
• Gluon-induced Higgs-strahlung at next-to-leading order QCD
• Recursive generation of one-loop amplitudes in the Standard Model
• Bloch-Nordsieck violating electroweak corrections to inclusive TeV scale hard processes
• Gluon fusion into Higgs pairs at NLO QCD and the top mass scheme
• Associated ZH production at hadron colliders: the fully differential NNLO QCD calculation
• Soft gluon resummation for gluon-induced Higgs Strahlung
• Collider Physics at the Precision Frontier
• An Analytical Method for the NLO QCD Corrections to Double-Higgs Production
• HandyG -- rapid numerical evaluation of generalised polylogarithms in Fortran
• Gluon-initiated associated production boosts Higgs physics
• Higgs-Pair Production via Gluon Fusion at Hadron Colliders: NLO QCD Corrections
• Reconstruction of top-quark mass effects in Higgs pair production and other gluon-fusion processes
• Higgsstrahlung at NNLL${}^{\prime }+$NNLO Matched to Parton Showers in GENEVA
• vh@nnlo-v2: New physics in Higgs Strahlung
• On top quark mass effects to $gg\to ZH$ at NLO
• $ZH$ production in gluon fusion: two-loop amplitudes with full top quark mass dependence
• A Numerical Routine for the Crossed Vertex Diagram with a Massive-Particle Loop
• Virtual corrections to $gg\to ZH$ in the high-energy and large-$m_t$ limits
• Next-to-leading order corrections for $gg\to ZH$ with top quark mass dependence
• Anomalous couplings in associated $VH$ production with Higgs decay to massive $b$ quarks at NNLO in QCD
• The anomalous $Zb\bar{b}$ couplings: From LEP to LHC
• Associated production of Z and neutral Higgs bosons at the CERN Large Hadron Collider
• Next-to-next-to-leading order event generation for $VH$ production with $H\to b\bar{b}$ decay
• New physics and signal-background interference in associated $pp\to HZ$ production

Cited by in corpus (10)

• Inclusive Production Cross Sections at N3LO
• Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Analytic approximations of $2\to 2$ processes with massive internal particles
• Threshold enhanced cross sections for colorless productions
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• $gg\to ZH$ : updated predictions at NLO QCD
• Soft gluon resummation for gluon fusion $ZH$ production
• Electroweak Higgs boson pair production: Updated inclusive cross sections
• Threshold improved $ZH$ production at the LHC
• Scalar leptoquark contributions to the $gg\to Zh$ process