Experimental considerations motivated by the diphoton excess at the LHC

We consider the immediate or near-term experimental opportunities offered by some scenarios that could explain the new diphoton excess at the lhc. if the excess is due to a new particle x s at 750 gev, additional new particles are required, providing further signals. if connected with naturalness, the x s be produced in top partner decays. then a $$ t^{prime}overline{t}^{prime } $$ signal, with t ′ → tx s and x s → gg dominantly, might be discovered by reinterpreting 13 tev susy searches in multijet events with low met and/or a lepton. if x s is a bound state of quirks, the signal events be accompanied by an unusual number of soft tracks or soft jets. other resonances including dilepton and photon+jet as well as dijet lie at or above this mass, and signatures of hidden glueballs might also be observable. if the “photons” in the excess are actually long-lived particles decaying to photon pairs or to electron pairs, there are opportunities for detecting overlapping photons and/or unusual patterns of apparent photon-conversions in either x s or 125 gev higgs decays. there is also the possibility of events with a hard “photon” recoiling against a narrow isolated hcal-only “jet”, which, after the jet’s energy is corrected for its electromagnetic origin, would show a peak at 750 gev.