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A Comparison of Predictions for SM Higgs Boson Production at the LHC

C. Balazs, M. Grazzini, J. Huston, A. Kulesza, I. Puljak

TL;DR

Addresses how different theoretical predictions for the Higgs boson p_T spectrum at the LHC compare for a 125 GeV Higgs. It contrasts parton-shower Monte Carlo predictions (HERWIG, PYTHIA, MC@NLO) with resummation-based calculations (ResBos, Berger-Qiu, Grazzini et al., Kulesza et al.), spanning LL to NNLL (and NNLO) accuracy. The study finds general agreement in the low- to moderate-p_T region, while the high-p_T tail exhibits notable differences due to how hard radiation and scale choices are treated, and NNLO/NNLL results affect the total rate. The results inform experimental analyses by clarifying the theoretical uncertainties and the impact of higher-order corrections on Higgs searches and measurement strategies.

Abstract

This paper describes a comparison of most of the available predictions for the cross section and transverse momentum distribution for a 125 GeV mass Higgs at the LHC, including those from the PYTHIA and HERWIG parton shower Monte Carlos and from four resummation calculations.

A Comparison of Predictions for SM Higgs Boson Production at the LHC

TL;DR

Addresses how different theoretical predictions for the Higgs boson p_T spectrum at the LHC compare for a 125 GeV Higgs. It contrasts parton-shower Monte Carlo predictions (HERWIG, PYTHIA, MC@NLO) with resummation-based calculations (ResBos, Berger-Qiu, Grazzini et al., Kulesza et al.), spanning LL to NNLL (and NNLO) accuracy. The study finds general agreement in the low- to moderate-p_T region, while the high-p_T tail exhibits notable differences due to how hard radiation and scale choices are treated, and NNLO/NNLL results affect the total rate. The results inform experimental analyses by clarifying the theoretical uncertainties and the impact of higher-order corrections on Higgs searches and measurement strategies.

Abstract

This paper describes a comparison of most of the available predictions for the cross section and transverse momentum distribution for a 125 GeV mass Higgs at the LHC, including those from the PYTHIA and HERWIG parton shower Monte Carlos and from four resummation calculations.

Paper Structure

This paper contains 3 sections, 5 equations, 2 figures.

Table of Contents

  1. INTRODUCTION
  2. PREDICTIONS FOR $p_T$ SPECTRA AND COMPARISONS
  3. CONCLUSIONS

Figures (2)

  • Figure 1: The absolute predictions for the production of a 125 GeV mass Higgs boson at the LHC.
  • Figure 2: The predictions for the production of a 125 GeV mass Higgs boson at the LHC, all normalized to the same cross section for better shape comparison.