Skip to main content
SpringerLink
Log in

Signal Modelling

  • Chapter
  • First Online:
Discovery and Measurement of the Higgs Boson in the WW Decay Channel

Part of the book series: Springer Theses ((Springer Theses))

  • 341 Accesses

Abstract

This thesis describes a search for the ggF production mode (see Fig. 5.1).

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Log in via an institution
eBook
USD 16.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Hardcover Book
USD 109.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Notes

  1. 1.

    The poor convergence of the ggF perturbative series, with respect to similar \(q\overline{q}\)-initiated processes, is thought to be due to the larger colour factor of the gluon.

  2. 2.

    The CI prescription is also called the Stewart-Tackmann prescription, after its original proponents.

  3. 3.

    Since the jets are predominantly central, the raising of \({p_{\text {T}}^{\text {cut}}}\) to 30 GeV in the forward region is neglected. This approximation is conservative, since the \(\Delta \sigma _N\) decrease with higher \({p_{\text {T}}^{\text {cut}}}\).

  4. 4.

    Processes whose perturbative series converge more quickly, such as \(q\overline{q} \rightarrow Z\), exhibit better agreement between schemes. This supports using these schemes to evaluate perturbative uncertainties.

  5. 5.

    hfact controls the scale at which the first emission transitions from Sudakov-like to ME-like. Its use in tuning \(p_{\text {T},H}\) is discussed in Sects. 4.5 and 4.9 of reference [1].

  6. 6.

    This \(p_{\text {T},H}\) reweighting is motivated by the \(H \rightarrow \gamma \gamma \text { and }H \rightarrow \tau \tau \) analyses, which feature boosted Higgs boson selection categories.

References

  1. LHC Higgs Cross Section Working Group, Handbook of LHC Higgs Cross Sections: 2. Differential Distributions, CERN-2012-002 (2012). arXiv:1201.3084 [hep-ph]

  2. R. Boughezal, X. Liu, F. Petriello, F.J. Tackmann, J.R. Walsh, Combining resummed Higgs predictions across jet bins. Phys. Rev. D 89, 074044 (2014). arXiv:1312.4535 [hep-ph]

  3. I.W. Stewart, F.J. Tackmann, Theory uncertainties for Higgs and other searches using jet bins. Phys. Rev. D 85, 034011 (2012). arXiv:1107.2117 [hep-ph]

  4. M. Grazzini, NNLO predictions for the Higgs boson signal in the \(H \rightarrow WW\rightarrow lvlv\) and \(H\rightarrow ZZ\rightarrow \mathit{4}l\) decay channels. JHEP 0802, 043 (2008). arXiv:0801.3232 [hep-ph]

  5. LHC Higgs Cross Section Working Group, Handbook of LHC Higgs Cross Sections: 3. Higgs Properties, CERN-2013-004 (2013). arXiv:1307.1347 [hep-ph]

  6. A. Banfi, G.P. Salam, G. Zanderighi, NLL+NNLO predictions for jet-veto efficiencies in Higgs-boson and Drell-Yan production. JHEP 1206, 159 (2012). arXiv:1203.5773 [hep-ph]

  7. A. Banfi, P.F. Monni, G.P. Salam, G. Zanderighi, Higgs and Z-boson production with a jet veto. Phys. Rev. Lett. 109, 202001 (2012). arXiv:1206.4998 [hep-ph]

  8. J.M. Campbell, R.K. Ellis, C. Williams, Hadronic production of a Higgs boson and two jets at next-to-leading order. Phys. Rev. D 81, 074023 (2010). arXiv:1001.4495 [hep-ph]

  9. R. Boughezal, F. Caola, K. Melnikov, F. Petriello, M. Schulze, Higgs boson production in association with a jet at next-to-next-to-leading order in perturbative QCD. JHEP 1306, 072 (2013). arXiv:1302.6216 [hep-ph]

  10. E. Bagnaschi, G. Degrassi, P. Slavich, A. Vicini, Higgs production via gluon fusion in the POWHEG approach in the SM and in the MSSM. JHEP 1202, 088 (2012). arXiv:1111.2854 [hep-ph]

  11. H.-L. Lai et al., New parton distributions for collider physics. Phys. Rev. D 82, 074024 (2010). arXiv:1007.2241 [hep-ph]

  12. D. de Florian, G. Ferrera, M. Grazzini, D. Tommasini, Transverse-momentum resummation: Higgs boson production at the Tevatron and the LHC. JHEP 1111, 064 (2011). arXiv:1109.2109 [hep-ph]

  13. M. Grazzini, H. Sargsyan, Heavy-quark mass effects in Higgs boson production at the LHC. JHEP 1309, 129 (2013). arXiv:1306.4581 [hep-ph]

  14. K. Hamilton, P. Nason, G. Zanderighi, MINLO: multi-scale improved NLO. JHEP 1210, 155 (2012). arXiv:1206.3572 [hep-ph]

  15. A.D. Martin, W.J. Stirling, R.S. Thorne, G. Watt, Parton distributions for the LHC. Eur. Phys. J. C 63, 189 (2009). arXiv:0901.0002 [hep-ph]

Download references

Author information

Authors and Affiliations

  1. Denys Wilkinson Building, University of Oxford, Oxford, UK

    David Hall

Authors
  1. David Hall
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to David Hall .

Rights and permissions

Reprints and permissions

Copyright information

© 2015 Springer International Publishing Switzerland

About this chapter

Cite this chapter

Hall, D. (2015). Signal Modelling. In: Discovery and Measurement of the Higgs Boson in the WW Decay Channel. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-19989-4_5

Download citation

Publish with us

Policies and ethics

Search

Navigation