Disentangling Strong Dynamics through Quantum Interferometry

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We present a new probe of strongly coupled electroweak symmetry breaking at the 14 TeV LHC by measuring a phase shift in the event distribution as a function of the decay azimuthal angles in massive gauge boson scattering.

• A large phase shift arises from an interference effect between the strongly interacting longitudinal modes and the transverse modes of the gauge bosons.
• We find that even very broad resonances of masses up to 900 GeV can be probed at 3$\sigma$ significance with a 3000 fb$^{-1}$ run of the LHC by using this technique.
• We also present the estimated reach for a future 50 TeV proton-proton collider.