Precision Measurements of Higgs Couplings: Implications for New Physics Scales
By Christoph R. Englert, Ayres Freitas, M. Muhlleitner, Tilman Plehn, M. Rauch, Michael Spira, K. Walz. 2014
152 citations recorded by the source corpus.
The measured properties of the recently discovered Higgs boson are in good agreement with predictions from the Standard Model. However, small deviations in the Higgs couplings may manifest themselves once the currently large uncertainties will be improved as part of the LHC program and at a future Higgs factory. We review typical new physics scenarios that lead to observable modications of the Higgs interactions. They can be divided into two broad categories: mixing eects as in portal models or extended Higgs sectors, and vertex loop eects from new matter or gauge elds. In each model we relate coupling deviations to their eective new physics scale. It turns out that with percent level precision the Higgs couplings will be sensitive to the multi-TeV regime.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/4786de12aeb0d80538aaff96ebd19d27135d2e39
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In Nuclear and High Energy Physics
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- Alan J. Barr
Citations in the corpus
- The gauge-Higgs legacy of the LHC Run I (2016, methodology): “After the discovery of a light, likely fundamental Higgs boson largely compatible with the Standard Model [1–3], the LHC has focused on precision studies of electroweak symmetry breaking [4,5].”
- Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production (2014, background): “This is obvious when we look at our currently very limited and model-dependent understanding of the top Yukawa coupling [8–24].”
- The hunt for the rest of the Higgs bosons (2015, background): “We first summarize the state of limits on 2HDM at the LHC from direct searches for additional Higgs states and indirect constraints from Higgs coupling measurements (for recent related work, see [14, 22–40]).”
- Search for the standard model Higgs boson produced in association with top quarks and decaying into a bb¯ pair in pp collisions at √s=13 TeV with the ATLAS detector (2018, background): “Assuming that no BSM particle couples to the Higgs boson, the ATLAS and CMS experiments measured a value of the top-quark’s Yukawa coupling equal to 0.87 0.15 times the SM prediction by combining [10] their respective Higgsboson measurements from the Run 1 dataset collected at center-of-mass energie”