%0 Journal Article
%T Accidentally light scalars from large representations
%+ Laboratoire Univers et Particules de Montpellier (LUPM)
%+ Laboratoire Charles Coulomb (L2C)
%A Brümmer, Felix
%A Ferrante, Giacomo
%A Frigerio, Michele
%A Hambye, Thomas
%< avec comité de lecture
%@ 1126-6708
%J Journal of High Energy Physics
%I Springer
%V 24
%P 075
%8 2024
%D 2024
%Z 2307.10092
%R 10.1007/JHEP01(2024)075
%K model, minimal
%K group, representation
%K mass, scalar
%K field theory, scalar
%K tree approximation
%K flat direction
%K SU(3)
%K selection rule
%K slow-roll approximation
%K SU(2)
%K spontaneous symmetry breaking
%K stability
%K hierarchy
%K radiative correction
%K cosmological model
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
%Z Physics [physics]/High Energy Physics - Theory [hep-th]Journal articles
%X In models with spontaneous symmetry breaking by scalar fields in large group representations, we observe that some of the scalar masses can be loop-suppressed with respect to the naive expectation from symmetry selection rules. We present minimal models -- the $\rm{SU(2)}$ five-plet and $\rm{SU(3)}$ ten-plet -- with such accidentally light scalars, featuring compact tree-level flat directions lifted by radiative corrections. We sketch some potential applications, from stable relics and slow roll in cosmology, to hierarchy and fine-tuning problems in particle physics.
%G English
%L hal-04171353
%U https://hal.science/hal-04171353
%~ IN2P3
%~ CNRS
%~ L2C
%~ LUPM
%~ MIPS
%~ UNIV-MONTPELLIER
%~ LUPM_IFAC
%~ UM-2015-2021
%~ UM-EPE