Speaker
Nicola Pozzobon
(PD)
Description
The LHC program at 13 and 14 TeV, after the observation of the
candidate SM Higgs boson, will clarify future subjects of study and
shape the tools needed to carry them on. Any upgrade of the LHC
experiments for unprecedented luminosities, such as the HL-LHC ones,
must then maintain the acceptance on electroweak processes for a
detailed study of the properties of the new particle. In particular,
key triggers must allow for an acceptance of low-mass scale processes
comparable to the one featured in 2012. In such a scenario, a new
approach to early trigger implementation is needed. One of the next
major steps is the exploitation of high-granularity tracking
sub-detectors, such as the CMS Silicon Tracker, in the early trigger
decision. This can be crucial for the confirmation of triggers in
other subsystems, and for the improvement of the on-line momentum
measurement resolution. A muon track-trigger for the CMS experiment at
the HL-LHC is presented. A back-extrapolation of DT trigger primitives
is proposed to match tracks found at Level 1 with muon candidates.
Given the better momentum resolution of the CMS silicon tracker, the
crucial role of the muon trigger will be to provide good spatial
information to enhance the association with Level 1 tracks. The main
figures-of-merit are presented, featuring sharp thresholds and less
contamination from lower momentum muons, and an expected rate
reduction of a factor 5 to 10 at typical thresholds with respect to
the current algorithm.
Collaboration
CMS
Primary author
Nicola Pozzobon
(PD)
Co-authors
Ignazio Lazzizzera
(TIFP)
Pierluigi Zotto
(PD)
Mrs
Sara Vanini
(PD)
