Performance of JetMET high level trigger algorithms in the CMS experiment using proton-proton collisions data at sqrt(s) = 13 TeV during Run-2 (CMS DP-2022/063)

The event selection efficiency for
requiring the presence of at least
one HLT PF jet having transverse
momentum (pT) greater than 500
GeV, the lowest unprescaled
threshold, is shown as a function of
the pT of the offline PF jet in the
event. The three different curves
represent data collected in the
years 2016, 2017 and 2018. The
slight variation in turn-on is due to
differences in offline jet energy
scale calibrations.
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Contact: Pallabi Das

The event selection efficiency for
requiring the lowest unprescaled
threshold HLT pTmiss triggers for the
years 2016, 2017 and 2018 is shown
as a function of the offline
corrected pTmiss which takes into
account jet energy scale
corrections into the p Tmiss
calculation. The online threshold
was increased after 2016 to limit
event acceptance due to pileup.

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The event selection efficiencies
are compared by requiring three
different thresholds on nominal
HLT pTmiss as a function of the
offline corrected pTmiss in the year
2018. The trigger turn-on curves
behave consistently.

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The event selection efficiencies as
a function of pileup are compared
between two thresholds
determined using fixed efficiency
values (80% and 95%) against the
offline corrected pTmiss in the year
2017, referring to slide 6. The
threshold at HLT applied on PF
pTmiss is 250 GeV. Here we assume
that the trigger efficiency plateau
is reached at the chosen offline
pTmiss threshold. It is observed that
with increasing pileup the
efficiency becomes worse.

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Contact: Pallabi Das