A generalized Higgs potential with two degenerate minima for a dark QCD matter scenarioMatthias F. M. Lutz, Yonggoo Heo and Xiao-Yu GuoEur. Phys. J. C, 80 4 (2020) 322DOI: https://doi.org/10.1140/epjc/s10052-020-7884-z