摘要: We explain the recent diphoton excesses around 750 GeV by both ATLAS and CMS as a singlet
scalar Φ which couples to SM gluon and neutral gauge bosons only through higher dimensional
operators. A natural explanation is that Φ is a pseudo-Nambu-Goldstone boson (pNGB) which
receives parity violation through anomaly if there exists a hidden strong dynamics. The singlet and
other light pNGBs will decay into two SM gauge bosons and even serves as the meta-stable coloured
states which can be probed in the future. By accurately measuring their relative decay and the
total production rate in the future, we will learn the underlying strong dynamics parameter. The
lightest baryon in this confining theory could serve as a viable dark matter candidate.