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The Infrared Structure of Exceptional Scalar Theories
Zhewei Yin
Exceptional theories are a group of one-parameter scalar field theories with (enhanced) vanishing soft limits in the S-matrix elements. They include the nonlinear sigma model (NLSM…
Universal Relations in Composite Higgs Models
Da Liu, Ian Low, Zhewei Yin
We initiate a phenomenological study of `universal relations' in composite Higgs models, which are dictated by nonlinear shift symmetries acting on the 125 GeV Higgs boson. These a…
Universal Imprints of a Pseudo-Nambu-Goldstone Higgs Boson
Da Liu, Ian Low, Zhewei Yin
A large class of models addressing the electroweak naturalness problem postulates the existence of new spontaneously broken global symmetries above the weak scale. The Higgs boson…
The Infrared Structure of Nambu-Goldstone Bosons
Ian Low, Zhewei Yin
The construction of effective actions for Nambu-Goldstone bosons, and the nonlinear sigma model, usually requires a target coset space . Recent progresses uncovered a new form…