Effective Lagrangian for a light Higgs-like scalar

By Roberto Contino, M. Ghezzi, Christophe Grojean, M. Muhlleitner, Michael Spira. 2013

397 citations recorded by the source corpus.

A bstractWe reconsider the effective Lagrangian that describes a light Higgs-like boson and better clarify a few issues which were not exhaustively addressed in the previous literature. In particular we highlight the strategy to determine whether the dynamics responsible for the electroweak symmetry breaking is weakly or strongly interacting. We also discuss how the effective Lagrangian can be implemented into automatic tools for the calculation of Higgs decay rates and production cross sections.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/78e1788d9311a8066e1760acb9b41b8bcf34246f

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In Artificial Intelligence

1. John Ellis
2. T. You
3. O. Matsedonskyi
4. Veronica Sanz
5. G. Panico
6. Benjamin Nachman
7. Michael Trott
8. Sven Heinemeyer

In Nuclear and High Energy Physics

1. Atlas Collaboration
2. Cms Collaboration
3. A. Wulzer
4. T. You
5. A. Falkowski
6. John Ellis
7. G. Panico
8. Veronica Sanz

Citations in the corpus

• 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].”
• Complete Higgs sector constraints on dimension-6 operators (2014, neutral): “The decay widths for H → Z∗Z(∗) → 4l, H →W W (∗) → lνlν, H → f̄f , H → gg and H → γγ have dependences on the dimension-6 coefficients that are given in [126, 127].”
• Measurements of Higgs boson properties in the diphoton decay channel with 36 fb$^{-1}$ of $pp$ collision data at $\sqrt{s} = 13$ TeV with the ATLAS detector (2018, positive): “Higgs boson production via VBF is generated at NLO accuracy in QCD using the Powheg-Box program [35–38] with the PDF4LHC15 PDF set.”
• Model-independent precision constraints on dimension-6 operators (2014, background): “[4] the operators OW , OB, O2W , O2B, OHW , and OHB are dropped, while in the SILH basis [22,23], the operators O HL, OHL and OWB are dropped.”
• Updated global SMEFT fit to Higgs, diboson and electroweak data (2018, methodology): “Another popular basis in the literature is referred to as the SILH basis [10, 52].”
• Electroweak constraints on flavorful effective theories (2015, background): “Another popular choice of dimension-6 operators is the so-called SILH basis [41, 74].”