Virtual corrections to $gg\to ZH$ via a transverse momentum expansion

Abstract

We compute the next-to-leading virtual QCD corrections to the partonic cross section of the production of a Higgs boson in association with a $Z$ boson in gluon fusion. The calculation is based on the recently introduced method of evaluating the amplitude via an expansion in terms of a small transverse momentum. We generalize the method to the case of different masses in the final state and of a process not symmetric in the forward-backward direction exchange. Our analytic approach gives a very good approximation (better than percent) of the partonic cross section in the center of mass energy region up to $\sim 750\text{GeV}$, where at the LHC $\sim 98\%$ of the total hadronic cross section is concentrated.

arXiv comment21 pages, 3 Figures and 1 Table

References in corpus (29)

• Generating Feynman Diagrams and Amplitudes with FeynArts 3
• HIGGS BOSON PRODUCTION AT THE LHC
• New Developments in FeynCalc 9.0
• LiteRed 1.4: a powerful tool for the reduction of the multiloop integrals
• The renormalization of the axial anomaly in dimensional regularization
• NNLO QCD corrections to the Higgs-strahlung processes at hadron colliders
• FIRE5: a C++ implementation of Feynman Integral REduction
• Observation of Higgs boson decay to bottom quarks
• pySecDec: a toolbox for the numerical evaluation of multi-scale integrals
• Observation of $H\to b\bar{b}$ decays and $VH$ production with the ATLAS detector
• Les Houches 2015: Physics at TeV Colliders Standard Model Working Group Report
• Analytic Results for Virtual QCD Corrections to Higgs Production and Decay
• Gluon-induced Higgs-strahlung at next-to-leading order QCD
• Soft gluon resummation for gluon-induced Higgs Strahlung
• A GPU compatible quasi-Monte Carlo integrator interfaced to pySecDec
• A non-planar two-loop three-point function beyond multiple polylogarithms
• An Analytical Method for the NLO QCD Corrections to Double-Higgs Production
• NLO QCD bottom corrections to Higgs boson production in the MSSM
• HandyG -- rapid numerical evaluation of generalised polylogarithms in Fortran
• Gluon-initiated associated production boosts Higgs physics
• On the two-loop virtual QCD corrections to Higgs boson pair production in the Standard Model
• Higgs Strahlung at the Large Hadron Collider in the 2-Higgs-Doublet Model
• NLO QCD corrections to pseudoscalar Higgs production in the MSSM
• 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
• Exploiting the WH/ZH symmetry in the search for New Physics
• New physics and signal-background interference in associated $pp\to HZ$ production