Displaced Photons HLT trigger on 2017 13 TeV data (CMS DP-2020/0xx)

The search for long-lived neutral particles decaying to single and double photons that arrive late in time uses dedicated displaced photon trigger. Details can be found in the DPS note.

Efficiency vs Photon pT Efficiency of the photon pT sequence of the signal trigger versus photon pT for data (black) and representative signal models, GMSB SPS8: Λ = 100 TeV; cτ = 10 cm and 1000 cm (blue and red respectively). The offline cut, placed at 70 GeV gives a 100% trigger efficiency. [Get pdf version] Contact: Livia Soffi

Efficiency vs HT Efficiency as a function of the event HT (scalar trasverse energy sum of the deposits in the hadronic calorimeter from jets with pT above 15 GeV in abs(eta)< 3) of the signal trigger for data (black) and representative signal models, GMSB SPS8: Λ = 100 TeV; cτ = 10 cm and 1000 cm (blue and red respectively). The offline cut, placed at 400 GeV gives a 100% trigger efficiency. [Get pdf version] Contact: Livia Soffi

Efficiency vs Photon Seed Time 1 Efficiency of the standard photon identification sequence of the signal trigger versus photon seed time for data (black) and representative signal models, GMSB SPS8: Λ = 100 TeV; cτ = 10 cm and 1000 cm (blue and red respectively). [Get pdf version] Contact: Livia Soffi

Efficiency vs Photon Seed Time 2 Efficiency of the displaced photon identification sequence of the signal trigger versus photon seed time for data (black) and representative signal models, GMSB SPS8: Λ = 100 TeV; cτ = 10 cm and 1000 cm (blue and red respectively). For a typical run, this requirement reduces the rate of the trigger by ~20% for a mean PU= ~55 and inst lumi of ~1.5E34 cm-2s-1 [Get pdf version] Contact: Livia Soffi

-- ElisabettaGallo - 2020-03-21