Resummation of soft and Coulomb corrections for $t\bar{t}h$ production at the LHC

Abstract

In this paper, a combined resummation of soft and Coulomb corrections is performed for the associated production of the Higgs boson with a top quark pair at the LHC. We illustrate the similarities and critical differences between this process and the $t\bar{t}$ production process. We show that up to the next-to-leading power, the total cross section for $t\bar{t}h$ production admits a similar factorization formula in the threshold limit as that for $t\bar{t}$ production. This fact, however, is not expected to hold at higher powers. Based on the factorization formula, we perform the resummation at the improved next-to-leading logarithmic accuracy, and match to the next-to-leading order result. This allows us to give NLL${}^{\prime }$+NLO predictions for the total cross sections at the LHC. We find that the resummation effects enhance the NLO cross sections by about 6\%, and significantly reduce the scale dependence of the theoretical predictions.

References in corpus (15)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Parton distributions in the LHC era: MMHT 2014 PDFs
• FIRE5: a C++ implementation of Feynman Integral REduction
• Theoretical status and prospects for top-quark pair production at hadron colliders
• Dynamical Threshold Enhancement and Resummation in Drell-Yan Production
• QCD NLO and EW NLO corrections to $t\bar{t}H$ production with top quark decays at hadron collider
• Higgs boson pair production in the D=6 extension of the SM
• Weak corrections to Higgs hadroproduction in association with a top-quark pair
• Threshold resummation for pair production of coloured heavy (s)particles at hadron colliders
• Heavy Quark Pair Production near Threshold with Potential Non-Relativistic QCD
• NNLL resummation for the associated production of a top pair and a Higgs boson at the LHC
• Electroweak and QCD corrections to top-pair hadroproduction in association with heavy bosons
• On the Soft-Gluon Resummation in Top Quark Pair Production at Hadron Colliders

Cited by in corpus (13)

• Collider Physics at the Precision Frontier
• Associated top quark pair production with a heavy boson: differential cross sections at NLO+NNLL accuracy
• Higgs boson production in association with a top-antitop quark pair in next-to-next-to leading order QCD
• Two-Loop Master Integrals for Leading-Color $pp\to t\bar{t}H$ Amplitudes with a Light-Quark Loop
• Top quark pair production near threshold: single/double distributions and mass determination
• The Role of the $t\bar{t}h$ Rest Frame in Direct Top-Quark Yukawa Coupling Measurements
• Two-loop amplitudes for ttH production: the quark-initiated Nf-part
• The $q_{\mathrm{T}}$ and $\Delta {\varphi }_{t\bar{t}}$ spectra in top-antitop hadroproduction at NNLL+NNLO: the interplay of soft-collinear resummation and Coulomb singularities
• The role of the threshold variable in soft-gluon resummation of the $t\bar{t}h$ production process
• Two-loop infrared singularities in the production of a Higgs boson associated with a top-quark pair
• State-of-the-art cross sections for ttH: NNLO predictions matched with NNLL resummation and EW corrections
• Geometric realization of stress-tensor deformed field theory
• Next-to-next-to-leading order event generation for $t\bar{t}H$ production with approximate two-loop amplitude