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Higgs after the discovery: a status report

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Abstract

Recently, the ATLAS and CMS collaborations have announced the discovery of a 125 GeV particle, commensurable with the Higgs boson. We analyze the 2011 and 2012 LHC and Tevatron Higgs data in the context of simplified new physics models, paying close attention to models which can enhance the diphoton rate and allow for a natural weak-scale theory. Combining the available LHC and Tevatron data in the h → ZZ * → 4l, h → WW * → lνlν, h → γγ, hjj → γγjj and hV → \( b\overline{b}V \) channels, we derive constraints on an effective low-energy theory of the Higgs boson. We map several simplified scenarios to the effective theory, capturing numerous new physics models such as supersymmetry, composite Higgs, dilaton. We further study models with extended Higgs sectors which can naturally enhance the diphoton rate. We find that the current Higgs data are consistent with the Standard Model Higgs boson and, consequently, the parameter space in all models which go beyond the Standard Model is highly constrained.

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Authors and Affiliations

  1. Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, 69978, Israel

    Dean Carmi, Eric Kuflik & Tomer Volansky

  2. Laboratoire de Physique Théorique d’Orsay, UMR8627-CNRS, Université Paris-Sud, Orsay, France

    Adam Falkowski

  3. Department of Physics, University of Cincinnati, Cincinnati, Ohio, 45221, U.S.A.

    Jure Zupan

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  1. Dean Carmi
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  2. Adam Falkowski
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  4. Tomer Volansky
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  5. Jure Zupan
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Correspondence to Tomer Volansky.

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Carmi, D., Falkowski, A., Kuflik, E. et al. Higgs after the discovery: a status report. J. High Energ. Phys. 2012, 196 (2012). https://doi.org/10.1007/JHEP10(2012)196

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