F. Beaudette
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View article: Leakage current of high-fluence neutron-irradiated 8' silicon sensors for the CMS Endcap Calorimeter Upgrade
Leakage current of high-fluence neutron-irradiated 8' silicon sensors for the CMS Endcap Calorimeter Upgrade Open
The HL-LHC will challenge the detectors with a nearly 10-fold increase in integrated luminosity compared to the previous LHC runs combined, thus the CMS detector will be upgraded to face the higher levels of radiation and the larger amount…
View article: Using graph neural networks to reconstruct charged pion showers in the CMS High Granularity Calorimeter
Using graph neural networks to reconstruct charged pion showers in the CMS High Granularity Calorimeter Open
A novel method to reconstruct the energy of hadronic showers in the CMS High Granularity Calorimeter (HGCAL) is presented. The HGCAL is a sampling calorimeter with very fine transverse and longitudinal granularity. The active media are sil…
View article: Timing performance of the CMS High Granularity Calorimeter prototype
Timing performance of the CMS High Granularity Calorimeter prototype Open
This paper describes the experience with the calibration, reconstruction and evaluation of the timing capabilities of the CMS HGCAL prototype in the beam tests in 2018. The calibration procedure includes multiple steps and corrections rang…
View article: Performance of the CMS High Granularity Calorimeter prototype to charged pion beams of 20–300 GeV/c
Performance of the CMS High Granularity Calorimeter prototype to charged pion beams of 20–300 GeV/c Open
The upgrade of the CMS experiment for the high luminosity operation of the LHC comprises the replacement of the current endcap calorimeter by a high granularity sampling calorimeter (HGCAL). The electromagnetic section of the HGCAL is base…
View article: Timing Performance of the CMS High Granularity Calorimeter Prototype
Timing Performance of the CMS High Granularity Calorimeter Prototype Open
This paper describes the experience with the calibration, reconstruction and evaluation of the timing capabilities of the CMS HGCAL prototype in the beam tests in 2018. The calibration procedure includes multiple steps and corrections rang…
View article: Response of a CMS HGCAL silicon-pad electromagnetic calorimeter prototype to 20–300 GeV positrons
Response of a CMS HGCAL silicon-pad electromagnetic calorimeter prototype to 20–300 GeV positrons Open
The Compact Muon Solenoid collaboration is designing a new high-granularity endcap calorimeter, HGCAL, to be installed later this decade. As part of this development work, a prototype system was built, with an electromagnetic section consi…
View article: A deep neural network method for analyzing the CMS High Granularity Calorimeter (HGCAL) events
A deep neural network method for analyzing the CMS High Granularity Calorimeter (HGCAL) events Open
For the High Luminosity LHC, the CMS collaboration made the ambitious choice of a high granularity design to replace the existing endcap calorimeters. Thousands of particles coming from the multiple interactions create showers in the calor…
View article: Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at root s=7 TeV
Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at root s=7 TeV Open
The first measurement of the electroweak production cross section of a Z boson with two jets (Zjj) in pp collisions at √s = 7TeV is presented, based on a data sample recorded by the CMS experiment at the LHC with an integrated luminosity o…
View article: Deployment of a Matrix Element Method code for the ttH channel analysis on GPU’s platform
Deployment of a Matrix Element Method code for the ttH channel analysis on GPU’s platform Open
The observation of the associated production of the Higgs boson with two top quarks in proton-proton collisions is one of the highlights of the LHC Run 2. Driven by the theoretical description of the physics processes, the Matrix Element M…
View article: Exclusive and semi-exclusive pi+pi- production in proton-proton collisions at sqrt(s) = 7 TeV
Exclusive and semi-exclusive pi+pi- production in proton-proton collisions at sqrt(s) = 7 TeV Open
A measurement is presented of the exclusive and semi-exclusive production of charged pion pairs in proton-proton collisions, pp to p(p*) + pi+pi- + p(p*) here the pi+pi- pair is emitted at central rapidities, and the scattered protons stay…
View article: The CMS Level-1 electron and photon trigger: for Run II of LHC
The CMS Level-1 electron and photon trigger: for Run II of LHC Open
The Compact Muon Solenoid (CMS) employs a sophisticated two-level online triggering system that has a rejection factor of up to 105. Since the beginning of Run II of LHC, the conditions that CMS operates in have become increasingly challen…
View article: Measurement of the ttbar production cross section using events with one lepton and at least one jet in pp collisions at sqrt(s)=13 TeV
Measurement of the ttbar production cross section using events with one lepton and at least one jet in pp collisions at sqrt(s)=13 TeV Open
A measurement of the ttbar production cross section at sqrt(s)=13 TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.3 inverse femtobarns, collected with the CMS detector at the LHC. Final state…
View article: The CMS Level-1 Calorimeter Trigger for the LHC Run II
The CMS Level-1 Calorimeter Trigger for the LHC Run II Open
Results from the completed Phase 1 Upgrade of the Compact Muon Solenoid (CMS) Level-1 Calorimeter Trigger are presented. The upgrade was completed in two stages, with the first running in 2015 for proton and Heavy Ion collisions and the fi…
View article: Search for CP violation in top quark-antiquark production and decay in proton-proton collisions at sqrt(s) = 8 TeV
Search for CP violation in top quark-antiquark production and decay in proton-proton collisions at sqrt(s) = 8 TeV Open
The results of a first search for CP violation in the production and decay of top quark-antiquark (ttbar) pairs are presented. The search is based on asymmetries in T-odd, triple-product correlation observables, where T is the time-reversa…
View article: Triggering on electrons, jets and tau leptons with the CMS upgraded calorimeter trigger for the LHC RUN II
Triggering on electrons, jets and tau leptons with the CMS upgraded calorimeter trigger for the LHC RUN II Open
The Compact Muon Solenoid (CMS) experiment has implemented a sophisticated two-level online selection system that achieves a rejection factor of nearly 10e5. During Run II, the LHC will increase its centre-of-mass energy up to 13 TeV and p…
View article: Run 2 upgrades to the CMS Level-1 calorimeter trigger
Run 2 upgrades to the CMS Level-1 calorimeter trigger Open
The CMS Level-1 calorimeter trigger is being upgraded in two stages to maintain performance as the LHC increases pile-up and instantaneous luminosity in its second run. In the first stage, improved algorithms including event-by-event pile-…
View article: Search for high-mass Z$\gamma$ resonances at $\sqrt{s} =$ 8 and 13 TeV using jet substructure techniques
Search for high-mass Z$\gamma$ resonances at $\sqrt{s} =$ 8 and 13 TeV using jet substructure techniques Open
A search for massive resonances decaying to a Z boson and a photon is performed in events with a hadronically decaying Z boson candidate, separately in light-quark and b quark decay modes, identified using jet substructure and advanced b t…
View article: Matrix element method for high performance computing platforms
Matrix element method for high performance computing platforms Open
Lot of efforts have been devoted by ATLAS and CMS teams to improve the quality of LHC events analysis with the Matrix Element Method (MEM). Up to now, very few implementations try to face up the huge computing resources required by this me…
View article: Run 2 Upgrades to the CMS Level-1 Calorimeter Trigger
Run 2 Upgrades to the CMS Level-1 Calorimeter Trigger Open
The CMS Level-1 calorimeter trigger is being upgraded in two stages to maintain performance as the LHC increases pile-up and instantaneous luminosity in its second run. In the first stage, improved algorithms including event-by-event pile-…