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Higgs-Boson Physics at the LHC

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The Large Hadron Collider

Abstract

The discovery of a Higgs boson or the exclusion of such a particle in a wide mass range from 100 to 1000 GeV was a major design goal of the LHC and the experiments ATLAS and CMS. The discovery of a Higgs-like particle at a mass around 125 GeV marked the beginning of a new era in particle physics. A snapshot of early results at the time of discovery and detailed investigations of the properties of the new particle with the full LHC data set taken in the years 2010–2012 at centre-of-mass energies of 7 and 8 TeV as well as remaining open questions are the main focus of this chapter.

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Notes

  1. 1.

    \(\xi ^2\) is equivalent to the cross section normalised to the one expected in the SM, commonly denoted as “signal-strength modifier”, \(\mu \).

  2. 2.

    This is due to a cancellation between the \(1/m_{t} \) behaviour of the loop contribution and the \(m_{t} \) factor arising from the Yukawa coupling.

  3. 3.

    At LEP and Tevatron, the background-only hypothesis was used as the denominator of the likelihood ratio.

  4. 4.

    Citation from http://www.nobelprize.org, Oct. 2013.

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Author information

Authors and Affiliations

  1. Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, 79104, Freiburg, Germany

    Karl Jakobs

  2. Institut für Experimentelle Kernphysik, KIT, Wolfgang-Gaede-Str. 1, 76131, Karlsruhe, Germany

    Günter Quast

  3. DESY, Notkestr. 85, 22607, Hamburg, Germany

    Georg Weiglein

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  1. Karl Jakobs
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  2. Günter Quast
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  3. Georg Weiglein
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Correspondence to Karl Jakobs .

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Editors and Affiliations

  1. FH-CMS, Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany

    Thomas Schörner-Sadenius

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Jakobs, K., Quast, G., Weiglein, G. (2015). Higgs-Boson Physics at the LHC. In: Schörner-Sadenius, T. (eds) The Large Hadron Collider. Springer, Cham. https://doi.org/10.1007/978-3-319-15001-7_6

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