Resonant production of Wh and Zh at the LHC

Abstract

We 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 Higgs Effective Theory, including only the Standard Model particles. We focus on its scalar sector (Higgs boson h and electroweak Goldstones associated to $W_L^{\pm }$ and $Z_L$), which is expected to give the strongest beyond Standard Model rescattering effects. The range of the effective theory is extended with dispersion-relation based unitarization, and compared to the alternative extension with explicit axial-vector resonances. We estimate the Wh and Zh production cross-section, where an intermediate axial-vector resonance is generated for certain values of the chiral couplings. We exemplify our analysis with a benchmark axial-vector with $M_A=3$ TeV. Interestingly enough, these different approaches provide essentially the same prediction. Finally we discuss the sensitivity of ATLAS and CMS to such resonances.

28 pages, 7 eps figures

References in corpus (9)

• Light scalar at LHC: the Higgs or the dilaton?
• One-loop $\gamma \gamma \to W_L^{+}{W}_L^{-}$ and $\gamma \gamma \to Z_L{Z}_L$ from the Electroweak Chiral Lagrangian with a light Higgs-like scalar
• Search for new resonances decaying to a $W$ or $Z$ boson and a Higgs boson in the ${\ell }^{+}{\ell }^{-}b\bar{b}$, $\ell \nu b\bar{b}$, and $\nu \bar{\nu }b\bar{b}$ channels with $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Possible new resonance from $W_L{W}_L$-$hh$ interchannel coupling
• Some Remarks on the Pade Unitarization of Low-Energy Amplitudes
• Production of vector resonances at the LHC via WZ-scattering: a unitarized EChL analysis
• Electroweak chiral Lagrangians and the Higgs properties at the one-loop level
• Searches for diboson resonances at CMS
• Resonances and loops: scale interplay in the Higgs effective field theory

Cited by in corpus (5)

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• Light-flavor resonance dynamics in the $U(3)$ chiral theory