Speaker
Description
Linear Standard Model (SM) extensions, defined as new particles that can
couple linearly to SM fields, form a motivated subset of simplified models for
exploring phenomenology beyond the SM (BSM). Their linear couplings enable
them to be singly produced at colliders and searched for directly. To take full
advantage of the complementarity between direct searches at high energy and
indirect constraints at lower energies, we may integrate out the heavy BSM
particles to obtain their effects in the SM Effective Field Theory (SMEFT)
framework, parametrised by the Wilson coefficients of higher-dimensional op-
erators. In this talk we map the one-loop dimension-6 SMEFT structure of the scalar
and fermion linear SM extensions, extending the results previously obtained at
tree level in the literature.
