PT Journal
AU Cheng, L
   Eberhardt, O
   Murphy, CW
TI Novel theoretical constraints for color-octet scalar models
SO Chinese Physics C
JI Chin. Phys. C
PY 2019
BP 093101
EP 11pp
VL 43
IS 9
DI 10.1088/1674-1137/43/9/093101
LA English
DE beyond the Standard Model; extension of Higgs sector; EW symmetry breaking
AB We study the theoretical constraints on a model whose scalar sector contains one color octet and one or two color singlet SU(2)(L) doublets. To ensure unitarity of the theory, we constrain the parameters of the scalar potential for the first time at the next-to-leading order in perturbation theory. Moreover, we derive new conditions guaranteeing the stability of the potential. We employ the HEPfit package to extract viable parameter regions at the electroweak scale and test the stability of the renormalization group evolution up to the multi-TeV region. Furthermore, we set upper limits on the scalar mass splittings. All results are given for both cases with and without a second scalar color singlet.
ER