Thursday, November 11, 2021, 16:00
online only
(for the zoom link contact michael.spira@psi.ch, johannes.schlenk@psi.ch or
antonio.coutinho@psi.ch)
Cristina Botta, University of Zürich
Abstract:
Despite theoretical indications suggest that New Physics (NP) should
appear at the weak-scale energy range probed by the LHC, after almost
eight years of data-taking at 7, 8, 13 TeV, ATLAS and CMS have found no
direct sign of NP. These results have dramatically changed the
landscape of what is meaningful to search for and many theoretical
models for NP have been proven wrong, at least in their simplest
realisations. The scenarios that are still viable foresee NP in
compressed spectra, or feebly coupled to the SM, and impose severe
challenges to the general purpose experiments (signatures with soft or
displaced objects, low signal acceptance due to trigger requirements,
huge backgrounds from SM processes). We will review what all this means
for Supersymmetry searches at LHC and HL-LHC. We will in particular
focus on the related trigger challenges. The HL-LHC running conditions
will impose to the general purpose detectors an average of 200 pile-up
interactions, a factor five increase with respect to LHC Run 2 operating
conditions. One of the biggest challenge in coping with increased PU is
posed for the trigger system, that will have to, at least, maintain the
Run 2 physics acceptance to keep exploring the electro-weak scale. We
will present the Upgrade of the L1 Trigger at CMS to face these
challenges.