A Boost Test of Anomalous Diphoton Resonance at the LHC

Abstract

The recently observed diphoton resonance around 750~GeV at the LHC Run-2 could be interpreted as a weak singlet scalar. The scalar might also decay into a pair of $Z$-boson and photon. The $Z$-boson is highly boosted and appears as a fat jet in the detector. We use the jet substructure method to explore the possibility of discovering the singlet scalar in the process of $pp\to S\to Z\gamma$ in the future LHC experiment.

arXiv commentBoosted Z+gamma mode added; more realistic backgrounds considered; references updated

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