Logo
ScienceStack
Table of Contents
Fetching ...
Sign In

The Higgs Working Group: Summary Report 2003

K. A. Assamagan, M. Narain, A. Nikitenko, M. Spira, D. Zeppenfeld, J. Alwall, C. Balázs, T. Barklow, U. Baur, C. Biscarat, M. Bisset, E. Boos, G. Bozzi, O. Brein, J. Campbell, S. Catani, M. Ciccolini, K. Cranmer, A. Dahlhoff, S. Dawson, D. de Florian, A. De Roeck, V. Del Duca, S. Dittmaier, A. Djouadi, V. Drollinger, L. Dudko, M. Dührssen, U. Ellwanger, M. Escalier, Y. Q. Fang, S. Ferrag, J. R. Forshaw, M. Grazzini, J. Guasch, M. Guchait, J. F. Gunion, T. Hahn, R. Harlander, H. -J. He, S. Heinemeyer, J. Heyninck, W. Hollik, C. Hugonie, C. Jackson, N. Kauer, N. Kersting, V. Khoze, N. Kidonakis, R. Kinnunen, M. Krämer, Y. -P. Kuang, B. Laforge, S. Lehti, M. Lethuillier, J. Li, H. Logan, S. Lowette, F. Maltoni, R. Mazini, B. Mellado, F. Moortgat, S. Moretti, Z. Nagy, P. Nason, C. Oleari, S. Paganis, S. Penaranda, T. Plehn, W. Quayle, D. Rainwater, J. Rathsman, O. Ravat, L. Reina, A. Sabio Vera, A. Sopczak, Z. Trócsányi, P. Vanlaer, D. Wackeroth, G. Weiglein, S. Willenbrock, Sau Lan Wu, C. -P. Yuan, B. Zhang

TL;DR

This report consolidates theoretical advances in Higgs physics relevant to Tevatron and LHC analyses, focusing on QCD and electroweak corrections for Higgs production channels. It contrasts four-flavor and five-flavor schemes for Higgs production in association with bottom quarks, showing substantial NLO corrections and improved uncertainty estimates. It also consolidates precise predictions for gluon-fusion Higgs production (including NNLO and NNLL resummation) and Higgs-strahlung channels (WH/ZH) with NNLO QCD and electroweak corrections. Collectively, the findings tighten theoretical uncertainties and improve the reliability of Higgs coupling measurements and discovery prospects at current and future colliders, including MSSM scenarios via rescaled bottom Yukawas and MSSM-specific Higgs sectors.

Abstract

Theoretical progress in Higgs boson production and background processes is discussed with particular emphasis on QCD corrections at and beyond next-to-leading order as well as next-to-leading order electroweak corrections. The residual theoretical uncertainties of the investigated processes are estimated in detail. Moreover, recent investigations of the MSSM Higgs sector and other extensions of the SM Higgs sector are presented. The potential of the LHC and a high-energy linear e+e- collider for the measurement of Higgs couplings is analyzed.

The Higgs Working Group: Summary Report 2003

TL;DR

This report consolidates theoretical advances in Higgs physics relevant to Tevatron and LHC analyses, focusing on QCD and electroweak corrections for Higgs production channels. It contrasts four-flavor and five-flavor schemes for Higgs production in association with bottom quarks, showing substantial NLO corrections and improved uncertainty estimates. It also consolidates precise predictions for gluon-fusion Higgs production (including NNLO and NNLL resummation) and Higgs-strahlung channels (WH/ZH) with NNLO QCD and electroweak corrections. Collectively, the findings tighten theoretical uncertainties and improve the reliability of Higgs coupling measurements and discovery prospects at current and future colliders, including MSSM scenarios via rescaled bottom Yukawas and MSSM-specific Higgs sectors.

Abstract

Theoretical progress in Higgs boson production and background processes is discussed with particular emphasis on QCD corrections at and beyond next-to-leading order as well as next-to-leading order electroweak corrections. The residual theoretical uncertainties of the investigated processes are estimated in detail. Moreover, recent investigations of the MSSM Higgs sector and other extensions of the SM Higgs sector are presented. The potential of the LHC and a high-energy linear e+e- collider for the measurement of Higgs couplings is analyzed.

Paper Structure

This paper contains 12 sections, 2 equations, 13 figures.

Table of Contents

  1. Higgs Boson Production in Association with Bottom Quarks
  2. Introduction
  3. Setup
  4. Higgs + 2 $b$ Jet Production
  5. Higgs + 1 $b$ Jet Production
  6. Inclusive Higgs Boson Production
  7. Conclusions
  8. The total Cross Section $gg\rightarrow H$ at Hadron Colliders
  9. The $q_T$ Spectrum of the Higgs Boson at the LHC
  10. Precision Calculations for associated $WH$ and $ZH$ Production at Hadron Colliders
  11. Introduction
  12. QCD Corrections

Figures (13)

  • Figure 1: Sample Feynman diagrams for $gg\rightarrow b {\overline b} h$ and $q {\overline q}\rightarrow b {\overline b} h$ production.
  • Figure 2: Feynman diagram for $b {\overline b}\rightarrow h$ production.
  • Figure 3: Feynman diagrams for $g b\rightarrow b h$ production.
  • Figure 4: Total cross sections for $p{\overline p} (pp) \rightarrow b {\overline b} h+X$ at the Tevatron and the LHC as a function of the Higgs mass $M_h$ with two high-$p_T$$b$ jets identified in the final state. The $b/\bar{b}$ quarks are required to satisfy $p_T^{b/\bar{b}}>20~GeV$. We fix $\mu=\mu_R=\mu_F=(2m_b+M_h)/4$.
  • Figure 5: Total cross sections for $p{\overline p} (pp) \rightarrow b {\overline b} h+X$ at the Tevatron and the LHC as a function of the cut $p_{T {\rm cut}}$ in $p_T^{b/\bar{b}}$ for a Higgs mass $M_h=120$ GeV with two high-$p_T$$b$ jets identified in the final state. We fix $\mu=\mu_R=\mu_F=(2m_b+M_h)/4$.
  • ...and 8 more figures