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CMS Conference Reports

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2017-06-27
10:11
Construction and first beam-tests of silicon-tungsten prototype modules for the CMS High Granularity Calorimeter for HL-LHC / Romeo, Francesco (Beijing, Inst. High Energy Phys.) /CMS Collaboration
The High Granularity Calorimeter (HGCAL) is the technology choice of the CMS collaboration for the endcap calorimetry upgrade planned to cope with the harsh radiation and pileup environment at the High Luminosity-LHC. The HGCAL is realized as a sampling calorimeter, including an electromagnetic compartment comprising 28 layers of silicon pad detectors with pad areas of 0.5 - 1.0 square centimetres interspersed with absorbers. [...]
CMS-CR-2017-169.- Geneva : CERN, 2017 - 7 p. Fulltext: PDF;
In : International Conference on Technology and Instrumentation in Particle Physics 2017, Beijing, China, 21 - 26 May 2017

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2017-06-26
15:05
Commissioning and integration testing of the DAQ system for the CMS GEM upgrade / Castaneda Hernandez, Alfredo Martin (Texas A-M) /CMS Collaboration
The CMS muon system will undergo a series of upgrades in the coming years to preserve and extend its muon detection capabilities during the High Luminosity LHC.The first of these will be the installation of triple-foil GEM detectors in the CMS forward region with the goal of maintaining trigger rates and preserving good muon reconstruction, even in the expected harsh environment.In 2017 the CMS GEM project is looking to achieve a major milestone in the project with the installation of 5 super-chambers in CMS; this exercise will allow for the study of services installation and commissioning, and integration with the rest of the subsystems for the first time. An overview of the DAQ system will be given with emphasis on the usage during chamber quality control testing, commissioning in CMS, and integration with the central CMS system..
CMS-CR-2017-163.- Geneva : CERN, 2017 - 5 p. Fulltext: PDF;
In : International Conference on Technology and Instrumentation in Particle Physics 2017, Beijing, China, 21 - 26 May 2017

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2017-06-26
14:09
Operational Experience with Radioactive Source Calibration of the CMS Hadron Endcap Calorimeter Wedges with Phase I Upgrade Electronics / Bilki, Burak (Iowa U.) /CMS Collaboration
The Phase I Upgrade of the CMS Hadron Endcap Calorimeters consist of new photodetectors (Silicon Photomultipliers in place of Hybrid Photo-Diodes) and front-end electronics (QIE11). The upgrade will allow the elimination of the high amplitude noise and drifting response of the Hybrid Photo-Diodes, at the same time enabling the mitigation of the radiation damage of the scintillators and the wavelength shifting fibers with a larger spectral acceptance of the Silicon Photomultipliers. [...]
CMS-CR-2017-171.- Geneva : CERN, 2017 - 5 p. Fulltext: PDF;
In : International Conference on Technology and Instrumentation in Particle Physics 2017, Beijing, China, 21 - 26 May 2017

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2017-06-26
14:09
Commissioning of the CMS Hadron Forward Calorimeters Phase I Upgrade / Bilki, Burak (Iowa U.) /CMS Collaboration
The final phase of the CMS Hadron Forward Calorimeters Phase I upgrade is being performed during the Extended Year End Technical Stop of 2016 â?? 2017. In the framework of the upgrade, the PMT boxes are being reworked to implement two channel readout in order to exploit the benefits of the multi-anode PMTs in background tagging and signal recovery. [...]
CMS-CR-2017-170.- Geneva : CERN, 2017 - 5 p. Fulltext: PDF;
In : International Conference on Technology and Instrumentation in Particle Physics 2017, Beijing, China, 21 - 26 May 2017

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2017-06-26
14:09
Searches for dark matter at CMS in events with missing transverse energy / Laner Ogilvy, Christian (Imperial Coll., London) /CMS Collaboration
Many theories predict candidates to the dark matter particles that are light enough to be produced at the LHC. This talk presents the searches for dark matter at CMS in events with missing transverse energy, focusing on the recent results obtained using data collected in 2016..
CMS-CR-2017-165.- Geneva : CERN, 2017 - 7 p. Fulltext: PDF;
In : 25th International Workshop on Deep Inelastic Scattering and Related Topics, Birmingham, UK, 03 - 07 Apr 2017

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2017-06-26
14:09
Higgs boson measurements and extended scalar sector searches in fermionic final states / Lenz, Teresa (DESY) /CMS Collaboration
Latest results of SM Higgs measurements in the fermionic final state are presented, as well as results of searches for BSM Higgs bosons using the CMS detector at LHC. Results are based on pp collision data collected at centre-of-mass energies of 8 and 13 TeV. [...]
CMS-CR-2017-164.- Geneva : CERN, 2017 - 6 p. Fulltext: PDF;
In : 25th International Workshop on Deep Inelastic Scattering and Related Topics, Birmingham, UK, 03 - 07 Apr 2017

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2017-06-22
17:07
Dark matter search in CMS / Vartak, Adish (UC, San Diego) /CMS Collaboration
The dark matter search program at the LHC covers a wide range of final states and targets a variety of possible interactions between dark matter and standard model particles. A summary of the dark matter searches performed at the CMS experiment, using proton-proton collision data collected at a center of energy of 13 TeV, is presented.Searches performed in various final states are described, and results interpreted in terms of several dark matter models are presented. [...]
CMS-CR-2017-147.- Geneva : CERN, 2017 - 10 p. Fulltext: PDF;
In : 52nd Rencontres de Moriond on Very High Energy Phenomena in the Universe, La Thuile, Italy, 18 - 25 Mar 2017

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2017-06-22
17:00
FPGA-based Real-time Charged Particle Trajectory Reconstruction at the Large Hadron Collider / Bartz, Edward Hugo (Rutgers U., Piscataway) ; Chaves, Jorge Enrique (Cornell U.) ; Gershtein, Yury (Rutgers U., Piscataway) ; Halkiadakis, Eva (Rutgers U., Piscataway) ; Hildreth, Michael (Notre Dame U.) ; Kyriacou, Savvas (Rutgers U., Piscataway) ; Lannon, Kevin Patrick (Notre Dame U.) ; Lefeld, Anthony James (Ohio State U.) ; Ryd, Anders Per Erik (Cornell U.) ; Skinnari, Louise (Cornell U.) et al.
The upgrades of the Compact Muon Solenoid particle physics experiment at CERN's Large Hadron Collider provide a major challenge for the real-time collision data selection. This paper presents a novel approach to pattern recognition and charged particle trajectory reconstruction using an all-FPGA solution. [...]
CMS-CR-2017-100.- Geneva : CERN, 2017 - 9 p. Fulltext: PDF;
In : 25th Annual International Symposium on Field-Programmable Custom Computing Machines, Napa, CA, USA, 30 Apr - 2 May 2017

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2017-06-15
11:45
Searches for low mass BSM particles using the 125 GeV Higgs / Asawatangtrakuldee, Chayanit (DESY) /CMS Collaboration
Searches for low mass beyond the Standard Model (BSM) particles using the discovered Higgs boson at 125 GeV are presented in different possible channels, including invisible decays of the Higgs boson, the Higgs boson decays to new light bosons in which the light bosons decay to SM particles, and Lepton Flavour Violation (LFV) of the Higgs boson. The data is collected with the CMS detector at the LHC which corresponding to integrated luminosities of 19.7 and 2.3 fb$^{-1}$ at central-of-mass energies of 8 and 13 TeV, respectively. [...]
CMS-CR-2017-149.- Geneva : CERN, 2017 - 9 p. Fulltext: PDF;
In : 25th International Workshop on Deep Inelastic Scattering and Related Topics, Birmingham, UK, 03 - 07 Apr 2017

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2017-06-15
11:37
Search for new resonances decaying into W, Z and H bosons at CMS / Zucchetta, Alberto (Zurich U.) /CMS Collaboration
Beyond the standard model theories like Extra-Dimensions and Composite Higgs scenarios predict the existence of very heavy resonances compatible with a spin 0 (Radion), spin 1 (W', Z') and spin 2 (Graviton) particle with large branching fractions in pairs of standard model bosons and negligible branching fractions to light fermions. We present an overview of searches for new physics containing W, Z or H bosons in the final state, using proton-proton collision data collected with the CMS detector at the CERN LHC. [...]
CMS-CR-2017-154.- Geneva : CERN, 2017 - 8 p. Fulltext: PDF;
In : 25th International Workshop on Deep Inelastic Scattering and Related Topics, Birmingham, UK, 03 - 07 Apr 2017

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