On-shell Higgsing for EFTs
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DOI: 10.1007/jhep03(2022)129
Abstract: Abstract We study the on-shell version of the Higgs mechanism in effective theories (EFTs) containing particles of different spins, focusing on contact terms as a simple starting point. We derive the massive contact terms and… read more here.
Keywords: contact; contact terms; little group; massless amplitudes ... See more keywords
Zwanziger’s pairwise little group on the celestial sphere
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DOI: 10.1007/jhep11(2021)051
Abstract: Abstract We generalize Zwanziger’s pairwise little group to include a boost subgroup. We do so by working in the celestial sphere representation of scattering amplitudes. We propose that due to late time soft photon and… read more here.
Keywords: little group; zwanziger pairwise; celestial sphere; pairwise little ... See more keywords