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Higgs Working Group Summary Report

S. Dawson, M. Grazzini, A. Nikitenko, M. Schumacher, N. E. Adam, T. Aziz, J. R. Andersen, A. Belyaev, T. Binoth, S. Catani, M. Ciccolini, J. E. Cole, S. Dawson, A. Denner, S. Dittmaier, A. Djouadi, M. Drees, U. Ellwanger, C. Englert, T. Figy, E. Gabrielli, D. Giordano, S. Gleyzer, R. Godbole, M. Grazzini, S. Greder, V. Halyo, M. Hashemi, S. Heinemeyer, G. Heinrich, M. Herquet, S. Hesselbach, C. Hugonie, C. B. Jackson, N. Kauer, R. Kinnunen, S. F. King, S. Lehti, F. Maltoni, B. Mele, P. Mertsch, M. Moretti, S. Moretti, M. Muhlleitner, A. K. Nayak, A. Nikitenko, C. Oleari, F. Piccinini, R. Pittau, J. Rathsman, I. Rottlaender, C. H. Shepherd-Themistocleous, M. Schumacher, J. M. Smillie, A. Sopczak, M. Spira, M. Takahashi, A. M. Teixeira, I. R. Tomalin, M. Vazquez Acosta, G. Weiglein, C. D. White, D. Zeppenfeld

TL;DR

This report surveys the theoretical status of Higgs boson production and decay at the LHC within the SM and MSSM, detailing the dominant mechanisms (gluon-gluon fusion, vector-boson fusion, and associated production) and the corresponding higher-order QCD and EW corrections. It introduces the HNNLO Monte Carlo program to deliver fully exclusive NNLO predictions for ggF Higgs production across key decay channels, including realistic cuts and differential distributions. The work also compares multiple NLO QCD calculations for VBF Higgs+2 jets, ensuring consistency across approaches and incorporating complete EW+QCD effects. Together, these results provide precise, practical predictions to support Higgs searches and precision coupling measurements at the LHC.

Abstract

Report of the Working Group on Higgs Bosons for the Workshop, ``Physics at TeV Colliders'', Les Houches, France, 11-29 June, 2007.

Higgs Working Group Summary Report

TL;DR

This report surveys the theoretical status of Higgs boson production and decay at the LHC within the SM and MSSM, detailing the dominant mechanisms (gluon-gluon fusion, vector-boson fusion, and associated production) and the corresponding higher-order QCD and EW corrections. It introduces the HNNLO Monte Carlo program to deliver fully exclusive NNLO predictions for ggF Higgs production across key decay channels, including realistic cuts and differential distributions. The work also compares multiple NLO QCD calculations for VBF Higgs+2 jets, ensuring consistency across approaches and incorporating complete EW+QCD effects. Together, these results provide precise, practical predictions to support Higgs searches and precision coupling measurements at the LHC.

Abstract

Report of the Working Group on Higgs Bosons for the Workshop, ``Physics at TeV Colliders'', Les Houches, France, 11-29 June, 2007.

Paper Structure

This paper contains 17 sections, 4 figures.

Table of Contents

  1. INTRODUCTION
  2. FOREWORD
  3. Gluon-Gluon Fusion
  4. Vector-Boson Fusion
  5. Associated Production With a $b{\bar{b}}$ Pair
  6. Associated Production With a $t{\bar{t}}$ Pair
  7. Associated production with a $W$ or a $Z$ boson
  8. Conclusions
  9. STANDARD MODEL HIGGS BOSONS
  10. HNNLO: A MONTE CARLO PROGRAM FOR HIGGS BOSON PRODUCTION AT THE LHC
  11. Introduction
  12. Results For the Decay Mode $H\to \gamma\gamma$
  13. Results for the Decay Mode $H\to l\nu l\nu$
  14. Conclusions
  15. TUNED COMPARISON OF QCD CORRECTIONS TO SM HIGGS-BOSON PRODUCTION VIA VECTOR BOSON FUSION AT THE LHC
  16. ...and 2 more sections

Figures (4)

  • Figure 1: Total cross sections for Higgs production at the LHC. The gluon fusion result is NNLO QCD with soft gluon resummation effects included at NNLL and uses MRST2002 PDFs with renormalization/factorization scales equal to $m_h$. The vector boson fusion curve is shown at NLO QCD with CTEQ6M PDFs and renormalization/factorization scales equal to $m_h$. The $Vh$ results ($V=W,Z$) include NNLO QCD corrections and NLO EW corrections and use MRST2002 PDFs with the renormalization /factorization scales equal to the $m_h-M_V$ invariant mass. The $b{\overline b}\rightarrow h$ result is NNLO QCD, with MRST2002 PDFs, renormalization scale equal to $m_h$ and factorization scale equal to $m_h/4$. The results for $t {\overline t} h$ production are NLO QCD, use CTEQ6M PDFs and set the renormalization/factorization scale to $m_t+m_h/2$Aglietti:2006ne.
  • Figure 2: Distributions in $p_{T{\rm min}}$ and $p_{T{\rm max}}$ for the diphoton signal at the LHC. The cross section is divided by the branching ratio in two photons.
  • Figure 3: Normalized distribution in the variable $\cos\theta^*$.
  • Figure 4: Normalized $\Delta\phi$ distribution at LO, NLO, NNLO.