Mass-degenerate Higgs bosons near 125 GeV in the NMSSM under current experimental constraintsLiangliang Shang, Pengqiang Sun, Zhaoxia Heng, Yangle He and Bingfang YangEur. Phys. J. C, 80 6 (2020) 574DOI: https://doi.org/10.1140/epjc/s10052-020-8132-2