Strong double higgs production at the LHC
By Roberto Contino, Christophe Grojean, M. Moretti, F. Piccinini, R. Rattazzi. 2010
267 citations recorded by the source corpus.
The hierarchy problem and the electroweak data, together, provide a plausible motivation for considering a light Higgs emerging as a pseudo-Goldstone boson from a strongly-coupled sector. In that scenario, the rates for Higgs production and decay differ significantly from those in the Standard Model. However, one genuine strong coupling signature is the growth with energy of the scattering amplitudes among the Goldstone bosons, the longitudinally polarized vector bosons as well as the Higgs boson itself. The rate for double Higgs production in vector boson fusion is thus enhanced with respect to its negligible rate in the SM. We study that reaction in pp collisions, where the production of two Higgs bosons at high pT is associated with the emission of two forward jets. We concentrate on the decay mode hh → WW(*)WW(*) and study the semi-leptonic decay chains of the W’s with 2, 3 or 4 leptons in the final states. While the 3 lepton final states are the most relevant and can lead to a 3σ signal significance with 300 fb−1 collected at a 14TeV LHC, the two same-sign lepton final states provide complementary information. We also comment on the prospects for improving the detectability of double Higgs production at the foreseen LHC energy and luminosity upgrades.
Subfields: Artificial Intelligence, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/3466821e2656d97391338df8a45def9595566130
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In Artificial Intelligence
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In Nuclear and High Energy Physics
- Atlas Collaboration
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- Stefan Dittmaier
- Ansgar Denner
- Fabio Maltoni
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- M. Grazzini
Citations in the corpus
- Higgs Physics at the HL-LHC and HE-LHC (2019, methodology): “To describe the deviations of the Higgs couplings with respect to their SM values we follow [449] where a general parametrisation of the couplings of a light Higgs-like scalar h to the SM vector bosons and fermions was introduced.”
- Renormalization group evolution of the Standard Model dimension six operators III: gauge coupling dependence and phenomenology (2013, methodology): “There are other alternatives being investigated, such as a nonlinearly realized SU(2)L × U(1)Y gauge symmetry in the scalar sector with a light scalar h; see [3–7] and references therein”
- Effective Lagrangian for a light Higgs-like scalar (2013, background): “J H E P 0 7 ( 2 0 1 3 ) 0 3 5 At the level of two derivatives one has [51]:”
- Handbook of LHC Higgs Cross Sections: 3. Higgs Properties (2013, background): “In the unitary gauge and in the basis of fermion mass eigenstates, the effective Lagrangian relevant for Higgs physics reads as follows [403, 424]”