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WW Physics

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The Road to Discovery

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

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Abstract

This chapter provides a general introduction to physics. The motivation for using the final state is outlined, and the basics of the signature and event selection are presented. The primary backgrounds to events are discussed, and the methods used to estimate them are introduced.

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Notes

  1. 1.

    As will be discussed in the following, there is sensitivity to Higgs mass in the transverse mass, which is used to improve the sensitivity of the \(H \rightarrow WW^{(*)}\rightarrow l\nu l\nu \) analysis.

  2. 2.

    This includes the BR of \(W\) to \(\tau \) with the \(\tau \) decaying to an electron or muon.

  3. 3.

    For some reason, unbeknownst to the author, the full jet multiplicity, including the 0-jet bin, is used to define the top control region. In this section the method is described without the 0-jet bin in the top control region. This has the advantage that the MC correction is reduced, and the circularity coming from the overlap with the signal region is avoided. In the Chaps. 10 and 11 the prediction including the 0-jet bin is presented.

References

  1. LHC Higgs Cross Section Working Group, S. Dittmaier, C. Mariotti, G. Passarino, and R. Tanaka (Eds.), Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables, CERN-2011-002 (CERN, Geneva, 2011), arxiv:1101.0593 [hep-ph]

  2. S. Frixione, B.R. Webber, Matching NLO QCD computations and parton shower simulations. J. High Energy Phys. 2002(6), 029 (2002). http://stacks.iop.org/1126-6708/2002/i=06/a=029

  3. T. Binoth, M. Ciccolini, N. Kauer, and M. Kramer, Gluon-induced W-boson pair production at the LHC, JHEP 0612 (2006), p. 46, arXiv:0611170 [hep-ph]

  4. ATLAS Collaboration, Observation of a new particle in the search for the standard model Higgs boson with the ATLAS detector at the LHC, Phys. Lett. B716 (2012) pp. 1–29, arxiv:1207.7214 [hep-ex]

  5. ATLAS Collaboration, Measurement of the \(W W\) cross section in \(\sqrt{s}=7\) TeV \(pp\) collisions with the ATLAS detector and limits on anomalous gauge couplings, Phys. Lett. B712 (2012) pp. 289–308, arxiv:1203.6232 [hep-ex]

  6. ATLAS Collaboration, Measurement of the WW cross section in sqrt(s) = 7 TeV pp collisions with ATLAS, Phys. Rev. Lett. 107, p. 041802, arxiv:1104.5225 [hep-ex]

  7. ATLAS Collaboration, Measurement of the WW cross section in sqrt(s) = 7 TeV pp collisions with the ATLAS detector and limits on anomalous gauge couplings, Phys. Lett. B2012 (2012), arxiv:1203.6232 [hep-ex]

  8. ATLAS Collaboration, Search for the Higgs boson in the \({H \rightarrow WW^{(*)}\rightarrow l\nu l\nu }\) decay channel in \(pp\) collisions at \(\sqrt{s}=7\) TeV with the ATLAS detector, Phys. Rev. Lett. 108 (2012), p. 111802, arxiv:1112.2577 [hep-ex]

  9. ATLAS Collaboration, Search for the Standard Model Higgs boson in the \({H \rightarrow WW^{(*)}\rightarrow l\nu l\nu }\) decay mode with 4.7 /fb of ATLAS data at \(\sqrt{s}=7\) TeV, Phys.Lett. B716 (2012), pp. 62–81, arxiv:1206.0756 [hep-ex]

  10. ATLAS Collaboration, Search for the Standard Model Higgs boson in the \(H \rightarrow WW \rightarrow l\nu l \nu \) decay mode using 1.7 fb-1 of data collected with the ATLAS detector at sqrt(s)=7 TeV, Tech. Rep. ATLAS-CONF-2011-134, CERN, Geneva, September, 2011. https://cdsweb.cern.ch/record/1383837

  11. ATLAS Collaboration, Search for the Higgs boson in the \({H \rightarrow WW^{(*)}\rightarrow l\nu l\nu }\) decay channel in pp collisions at sqrts = 7 TeV with the ATLAS detector, Phys. Rev. Lett. 108 (2012), p. 111802, arxiv:1112.2577 [hep-ex]

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Correspondence to John Alison .

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Alison, J. (2015). WW Physics. In: The Road to Discovery. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-10344-0_8

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