# Top–antitop production from $$W^+_L W^-_L$$WL+WL- and $$Z_L Z_L$$ZLZL scattering under a strongly interacting symmetry-breaking sector

@article{Castillo2016TopantitopPF,
title={Top–antitop production from \$\$W^+\_L W^-\_L\$\$WL+WL- and \$\$Z\_L Z\_L\$\$ZLZL scattering under a strongly interacting symmetry-breaking sector},
journal={The European Physical Journal C},
year={2016},
volume={77},
pages={1-14}
}
• Published 5 July 2016
• Physics
• The European Physical Journal C
By considering a non-linear electroweak chiral Lagrangian, including the Higgs, coupled to heavy quarks, and the equivalence theorem, we compute the one-loop scattering amplitudes $$W^+W^-\rightarrow t\bar{t}$$W+W-→tt¯, $$ZZ\rightarrow t\bar{t}$$ZZ→tt¯ and $$hh\rightarrow t\bar{t}$$hh→tt¯ (in the regime $$M_t^2/v^2\ll \sqrt{s}M_t/v^2\ll s/v^2$$Mt2/v2≪sMt/v2≪s/v2 and to NLO in the effective theory). We calculate the scalar partial-wave helicity amplitudes which allow us to check unitarity at the…
10 Citations
• Physics
Progress in Particle and Nuclear Physics
• 2020
We report the coupling of an external γγ or tt state to a strongly interacting EWSBS satisfying unitarity. We exploit perturbation theory for those coupling of the external state, whereas the EWSBS
• Physics
SciPost Physics
• 2021
Effective Field Theories (EFTs) constructed as derivative expansions in powers of momentum, in the spirit of Chiral Perturbation Theory (ChPT), are a controllable approximation to strong dynamics as
• Mathematics
EPJ Web of Conferences
• 2022
The Standard Model Effective Field Theory (SMEFT) is the parametrization chosen to interpret many modern measurements. We have recently discussed, building on the work of other groups, that its
This chapter includes a detailed study of the mathematical properties of the S-matrix, encoded in dispersion relations. Several unitarization procedures (IAM, N/D, old K-matrix and improved K-matrix)
The ATLAS and CMS collaborations at LHC have found a new boson compatible with the SM Higgs, with a mass of nearly $$M_h\simeq 125\,\mathrm{GeV}$$. Furthermore, the most probable $$J^P$$ quantum
• Physics
• 2017
A bstractWe examine the production of Wh and Zh pairs at the LHC in the context of a Strongly Interacting Symmetry Breaking Sector of the Standard Model. Our description is based on a non-linear
• Physics
• 2016
We define and calculate helicity partial-wave amplitudes for processes linking the Electroweak Symmetry Breaking Sector (EWSBS) to $$\gamma \gamma$$γγ, employing (to NLO) the Higgs-EFT (HEFT)

## References

SHOWING 1-10 OF 69 REFERENCES

• Physics
• 2016
A bstractA search for Higgs boson production in association with a pair of top quarks (tt¯H$$t\overline{t}H$$) is performed, where the Higgs boson decays to bb¯$$b\overline{b}$$, and both top
We search for a systematic way to characterize the low-energy sensitivity of the minimal Weinberg-Salam model to a heavy-Higgs-boson sector. We find that it is convenient to view this theory as the
• Physics
• 2017
A bstractIn this work we present for the first time predictions for top-quark pair differential distributions at the LHC at NNLO QCD accuracy and including EW corrections. For the latter we include
• Physics
• 2015
If the Electroweak Symmetry Breaking Sector turns out to be strongly interacting, the actively investigated effective theory for longitudinal gauge bosons plus Higgs can be efficiently extended to
• Veltman
• Materials Science, Mathematics
Physical review. D, Particles and fields
• 1991
The calculation of the amplitude for the process f=t, which provides a check of the results of the equivalence theorem, according to which the leading energy term for the ${W}_{L} amplitude is given by the corresponding$\ensuremath{\varphi}\$ amplitude.
• Physics
• 2013
The claimed finding of a light Higgs boson makes the minimal Standard Model unitary. Yet, we recall that the general low-energy dynamics for the minimal electroweak symmetry breaking sector with
• Physics
Physical review letters
• 2015
This paper exposes this channel-coupling resonance from unitarity and dispersion relations encoded in the inverse amplitude method, applied to the electroweak chiral Lagrangian with a scalar Higgs boson.
• Physics
• 2012
A bstractWe consider the Standard Model as an effective theory at the weak scale v of a generic new strong interaction that dynamically breaks electroweak symmetry at the energy scale Λ ~ (few) TeV.
• Physics
• 2014
A bstractBy including the recently discovered Higgs-like scalar φ in the Electroweak Chiral Lagrangian, and using the Equivalence Theorem, we carry out the complete one-loop computation of the