2020-02-04
15:11 |
B-Jet Trigger Performance in Run 2
/CMS Collaboration
This study shows the performance of the online b-tagging run in 2017 (CSV) and 2018 (DeepCSV)..
CMS-DP-2019-042; CERN-CMS-DP-2019-042.-
Geneva : CERN, 2019 - 23 p.
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2020-01-30
10:19 |
Identification of highly Lorentz-boosted heavy particles using graph neural networks and new mass decorrelation techniques
/CMS Collaboration
This note presents several new developments on machine learning (ML)-based identification of highly Lorentz-boosted heavy particles using jet substructure in CMS and their performance with the CMS Phase 1 detector. A new algorithm based on ParticleNet, a graph neural network using an unordered set of jet constituent particles as the input, has been developed and shows significantly improved performance. [...]
CMS-DP-2020-002; CERN-CMS-DP-2020-002.-
Geneva : CERN, 2020 - 13 p.
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2019-12-16
15:15 |
Recording and reconstructing 10 billion unbiased b hadron decays in CMS
/CMS Collaboration
The CMS experiment has recorded a sample of 10 billion events containing the unbiased decays of b hadrons. The accumulation, processing, and validation of this data set were delivered without significant impact on the core physics programme of CMS. [...]
CMS-DP-2019-043; CERN-CMS-DP-2019-043.-
Geneva : CERN, 2019 - 18 p.
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2019-11-27
10:26 |
DT hit efficiency measurements with reduced high voltage
/CMS Collaboration
Efficiency measurements were carried out on the CMS Drift Tubes (DT) applying anode High Voltage lower than nominal. The "HV scans", performed periodically with cosmic rays, allowed to exclude detector ageing during Run 2, and also to assess the effect of lowering the Front End threshold. [...]
CMS-DP-2019-041; CERN-CMS-DP-2019-041.-
Geneva : CERN, 2019 - 8 p.
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2019-11-12
15:19 |
ECAL 2018 refined calibration and Preshower Run 2 performance plots
/CMS Collaboration
Many physics analyses using the Compact Muon Solenoid (CMS) detector at the LHC require accurate, high resolution electron and photon energy measurements. Following the excellent performance achieved in Run I at center-of-mass energies of 7 and 8 TeV, the CMS electromagnetic calorimeter (ECAL) is operating at the LHC with proton-proton collisions at 13 TeV center-of-mass energy. [...]
CMS-DP-2019-038; CERN-CMS-DP-2019-038.-
Geneva : CERN, 2019 - 25 p.
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2019-11-12
15:19 |
Emittance scans comparison with LHC wire scanner
/CMS Collaboration
High-luminosity production at the LHC is closely linked to the size of the transverse beam emittance. However emittance measurement is challenging. [...]
CMS-DP-2019-039; CERN-CMS-DP-2019-039.-
Geneva : CERN, 2019 - 16 p.
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2019-11-12
15:19 |
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2019-10-30
14:04 |
The MIP Timing Detector
/CMS Collaboration
These slides contain approved figures on the MIP Timing Detector design and performance..
CMS-DP-2019-037; CERN-CMS-DP-2019-037.-
Geneva : CERN, 2019 - 51 p.
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2019-10-30
14:03 |
Efficiency of the Pixel sensors used in the Precision Proton Spectrometer:
radiation damage
/CMS Collaboration
The Precision Proton Spectrometer (PPS) is a forward-proton spectrometer
using near-beam detectors (inside Roman Pots, RPs) located symmetrically
on both sides of IP5 at a distance of about 220 m. In 2017 (2018) two
(four) RPs were equipped with with 3D pixel sensors, which
by the end of Run-II collected $\sim$100/fb.
This note describes the method
used to evaluate the effect of the non-uniform irradiation on the readout chip, and
its consequences on the efficiency..
CMS-DP-2019-036; CERN-CMS-DP-2019-036.-
Geneva : CERN, 2019 - 17 p.
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2019-10-24
17:17 |
Time resolution of the diamond sensors used in the Precision Proton
Spectrometer
/CMS Collaboration
The Precision Proton Spectrometer (PPS) is a forward-proton spectrometer
using near-beam detectors (inside Roman Pots, RPs) located symmetrically
on both sides of IP5 at a distance of about 220 m. In addition to the
tracking system, timing detectors were installed in 2017 to measure the
Time-Of-Flight (TOF) of the protons produced in central exclusive
interactions. [...]
CMS-DP-2019-034; CERN-CMS-DP-2019-034.-
Geneva : CERN, 2019 - 15 p.
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