Overview of the \(H\rightarrow \textit{WW}\) Analysis

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The \(WW\) decay of the Higgs boson is a promising search channel as it has a large branching ratio (BR) for a wide range of \(m_H\). In fact, it is the most probable decay for \(m_H > 135\) GeV (see Fig.  1.5). This chapter will describe the experimental search for \(gg\rightarrow H \rightarrow WW \rightarrow \ell \nu \ell \nu \) (where \(\ell = { e}, \mu \)) using the 2012 dataset of \(pp\) collisions at \(\sqrt{s} = 8\)  TeV. The search strategy is optimised for a low mass Higgs boson, as favoured by electroweak fits, and thus accounts for off-shell \(W\) bosons.


Higgs Boson Primary Vertex Vector Boson Fusion Secondary Vertex Muon Spectrometer 
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  1. 1.
    Particle Data Group, Review of particle physics, Phys. Rev. D86, 010001 (2012), and 2013 partial update for the 2014 ednGoogle Scholar
  2. 2.
    T. Cornelissen et al., The new ATLAS track reconstruction (NEWT). J. Phys.: Conf. Ser. 119, 032014 (2008)ADSGoogle Scholar
  3. 3.
    ATLAS Collaboration, Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics, CERN-OPEN-2008-020 (2008), arXiv:0901.0512 [hep-ex]
  4. 4.
    G. Piacquadio, K. Prokofiev, A. Wildauer, Primary vertex reconstruction in the ATLAS experiment at LHC. J. Phys.: Conf. Ser. 119, 032033 (2008)ADSGoogle Scholar
  5. 5.
    E. Bouhova-Thacker et al., Expected Performance of Vertex Reconstruction in the ATLAS Experiment at the LHC. IEEE Trans. Nucl. Sci. 57, 760 (2010)ADSCrossRefGoogle Scholar
  6. 6.
    ATLAS Collaboration, Expected electron performance in the ATLAS experiment, ATL-PHYS-PUB-2011-006 (2011)Google Scholar
  7. 7.
    ATLAS Collaboration, Improved electron reconstruction in ATLAS using the Gaussian Sum Filter-based model for bremsstrahlung, ATLAS-CONF-2012-047 (2012)Google Scholar
  8. 8.
    ATLAS Collaboration, Electron performance measurements with the ATLAS detector using the 2010 LHC proton-proton collision data, Eur. Phys. J. C 72, 1909 (2012), arXiv:1110.3174 [hep-ex]
  9. 9.
    S. Laplace, J. de Vivie, Calorimeter isolation and pile-up. ATL-COM-PHYS-2012-467 (2012). (ATLAS internal)Google Scholar
  10. 10.
    ATLAS Collaboration, Electron Efficiency Measurements for 2012 and 2011 Data. ATL-COM-PHYS-2013-1287 (2013)Google Scholar
  11. 11.
    R. Nicolaidou et al., Muon identification procedure for the ATLAS detector at the LHC using Muonboy reconstruction package and tests of its performance using cosmic rays and single beam data. J. Phys.: Conf. Ser. 219, 032052 (2010)ADSGoogle Scholar
  12. 12.
    ATLAS Collaboration, Preliminary results on the muon reconstruction efficiency, momentum resolution, and momentum scale in ATLAS 2012 pp collision data. ATLAS-CONF-2013-088 (2013)Google Scholar
  13. 13.
    ATLAS Collaboration, Jet energy measurement with the ATLAS detector in proton-proton collisions at \(\sqrt{s}=7\) TeV, Eur. Phys. J. C 73, 2304 (2013), arXiv:1112.6426 [hep-ex]
  14. 14.
    ATLAS Collaboration, Jet energy scale and its systematic uncertainty in proton-proton collisions at \(\sqrt{s}=7\) TeV with ATLAS 2011 data, ATLAS-CONF-2013-004 (2013)Google Scholar
  15. 15.
    ATLAS Collaboration, Pile-up subtraction and suppression for jets in ATLAS, ATLAS-CONF-2013-083 (2013)Google Scholar
  16. 16.
  17. 17.
    ATLAS Collaboration, Selection of jets produced in proton-proton collisions with the ATLAS detector using 2011 data, ATLAS-CONF-2012-020 (2012)Google Scholar
  18. 18.
    ATLAS Collaboration, Commissioning of the ATLAS high-performance \(b\)-tagging algorithms in the 7 TeV collision data, ATLAS-CONF-2011-102 (2011)Google Scholar
  19. 19.
    ATLAS Collaboration, Calibration of \(b\)-tagging using dileptonic top pair events in a combinatorial likelihood approach with the ATLAS experiment, ATLAS-CONF-2014-004 (2014)Google Scholar
  20. 20.
    ATLAS Collaboration, Performance of missing transverse momentum reconstruction in ATLAS studied in proton-proton collisions recorded in 2012 at 8 TeV, ATLAS-CONF-2013-082 (2013)Google Scholar
  21. 21.
    ATLAS Collaboration, Measurements of the photon identification efficiency with the ATLAS detector using 4.9 fb\(^{-1}\) of pp collision data collected in 2011, ATLAS-CONF-2012-123 (2012)Google Scholar
  22. 22.
    ATLAS Collaboration, Determination of the tau energy scale and the associated systematic uncertainty in proton-proton collisions at \(\sqrt{s}=8\) TeV with the ATLAS detector at the LHC in 2012, ATLAS-CONF-2013-044 (2013)Google Scholar
  23. 23.
  24. 24.
    R.K. Ellis, I. Hinchliffe, M. Soldate, J.J. Van Der Bij, Higgs decay to \(\tau ^+\tau ^-\): a possible signature of intermediate mass Higgs bosons at high energy hadron colliders. Nucl. Phys. B 297, 221 (1988)Google Scholar
  25. 25.
    A. Hoecker et al., TMVA: toolkit for multivariate data analysis. PoS ACAT, 040 (2007), arXiv:physics/0703039

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© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Denys Wilkinson BuildingUniversity of OxfordOxfordUK

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