CMS Conference Reports

2018-02-19
12:59
 Systematic studies of charge-dependent azimuthal correlation in pPb and PbPb collisions at the LHC / Tu, Zhoudunming (Rice U.) /CMS Collaboration Studies of charge-dependent azimuthal correlations for same- and opposite-sign particle pairs are presented in PbPb collisions at 5.02 TeV and pPb collisions at 5.02 and 8.16 TeV, with the CMS experiment at the LHC. The azimuthal correlations are evaluated with respect to the second- and also higher-order event planes, as a function of particle pseudorapidity and transverse momentum, and event multiplicity. [...] CMS-CR-2017-373.- Geneva : CERN, 2017 - 11 p. Fulltext: PDF; In : 11th International Workshop on Critical Point and Onset of Deconfinement, Stony Brook, NY, USA, 07 - 11 Aug 2017

2018-02-19
12:59
 Higgs Boson Measurements in CMS with Run II Data / Kumar, Ashok (Delhi U.) /CMS Collaboration Latest results from the CMS experiment on studies of Higgs boson production are presented. Studies involving the 125 GeV Higgs boson using various Standard Model production and decay modes have been performed using proton proton collisions from data accumulated during the LHC Run II with center-of-mass energy of 13 TeV. [...] CMS-CR-2017-444.- Geneva : CERN, 2017 - 6 p. Fulltext: PDF; In : Light Cone 2017 : Frontiers in Light Front Hadron Physics : Theory and Experiment., Mumbai, Maharashtra, India, 18 - 22 Sep 2017

2018-02-19
10:11
 Operation and Performance of the CMS Outer Tracker / Butz, Erik Manuel (KIT, Karlsruhe, EKP) /CMS Collaboration The CMS Silicon Strip Tracker with its more than 15000 silicon modules and 200\,m$^2$ of active silicon area has been running together with the other subsystems of CMS for several years. We present the performance of the detector in the LHC Run 2 data taking. [...] CMS-CR-2017-428.- Geneva : CERN, 2017 - 11 p. Fulltext: PDF; In : The 26th International Workshop on Vertex Detectors , Las Caldas, Spain, 10 - 15 Sep 2017

2018-02-15
16:50
 Beam-dynamic effects at the CMS BRIL van der Meer scans / Babaev, Anton (TOMSK-POLYTEC) /CMS Collaboration The CMS Beam Radiation Instrumentation and Luminosity Project (BRIL) is responsible for the simulation and measurement of luminosity, beam conditions and radiation fields in the CMS experiment. The project is engaged in operating and developing new detectors (luminometers), adequate for the experimental conditions associated with high values of instantaneous luminosity delivered by the CERN LHC. [...] CMS-CR-2017-415.- Geneva : CERN, 2017 - 8 p. Fulltext: PDF;

2018-02-15
16:34
 Photon-photon measurements in CMS / Chudasama, Ruchi (Bhabha Atomic Res. Ctr.) /CMS Collaboration We discuss the measurement of photon-photon processes using data collected by the CMS experiment in pp collisions at $\sqrt{s}$ = 7 and 8 TeV and in PbPb collisions at $\sqrt{s_{_{{\rm NN}}}}= 5.02$ TeV.. CMS-CR-2017-218.- Geneva : CERN, 2017 - 6 p. Fulltext: PDF; In : International Conference on the Structure and the Interactions of the Photon, including the 22th International Workshop on Photon-Photon Collisions, Geneva, Switzerland, 22 - 26 May 2017

2018-02-15
16:33
 CMS Pixel detector development for the HL-LHC / Schwandt, Joern (Hamburg U.) /CMS Collaboration An upgrade program is underway which will bring the luminosity of the LHC up to about 7.5x10$^{34}$ cm$^{-2}$s$^{-1}$ in 2027, with the goal of an integrated luminosity of 3000~fb$^{-1}$ by the end of 2037. This High Luminosity scenario, HL-LHC, will present new challenges of higher data rates and increased radiation hardness for the pixel detector (a non-ionizing fluence of 2x10$^{16}$~n$_{eq}$/cm$^2$ and an ionizing dose of 10~MGy, is expected on the inner pixel layer for 3000~fb$^{-1}$ integrated luminosity). [...] CMS-CR-2018-018.- Geneva : CERN, 2018 - 7 p. Fulltext: PDF; In : 11th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11) in conjunction with 2nd Workshop on SOI Pixel Detectors (SOIPIX2017) at OIST, Okinawa, Japan, Okinawa, Japan, 10 - 15 Dec 2017

2018-02-15
16:32
 Silicon-Based Detectors at the HL-LHC / Hartmann, Frank (KIT, Karlsruhe, EKP) /ALICE,ATLAS,CMS and LHCB Collaborations This document discusses the silicon-based detectors planned for the High Luminosity LHC. The special aspects to cope with the new environment and its challenges, e.g. [...] CMS-CR-2018-015.- Geneva : CERN, 2018 - 12 p. Fulltext: PDF; In : 11th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11) in conjunction with 2nd Workshop on SOI Pixel Detectors (SOIPIX2017) at OIST, Okinawa, Japan, Okinawa, Japan, 10 - 15 Dec 2017

2018-02-05
11:25
 Alignment of the upgraded CMS pixel detector / Schroder, Matthias (KIT, Karlsruhe, EKP) /CMS Collaboration The all-silicon tracking system of the CMS experiment provides excellent resolution for charged tracks and an efficient tagging of heavy-flavour jets. After a new pixel detector has been installed during the LHC technical stop at the beginning of 2017, the positions, orientations, and surface curvatures of the sensors needed to be determined with a precision at the order of a few micrometres to ensure the required physics performance. [...] CMS-CR-2018-019.- Geneva : CERN, 2018 - 7 p. Fulltext: PDF; In : 11th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11) in conjunction with 2nd Workshop on SOI Pixel Detectors (SOIPIX2017) at OIST, Okinawa, Japan, Okinawa, Japan, 10 - 15 Dec 2017

2018-02-05
11:25
 The CMS Outer Tracker for HL-LHC / Dierlamm, Alexander Hermann (KIT, Karlsruhe, EKP) /CMS Collaboration The LHC is planning an upgrade program, which will bring the luminosity to about $5-7\times10^{34}$~cm$^{-2}$s$^{-1}$ in 2026, with a goal of an integrated luminosity of 3000 fb$^{-1}$ by the end of 2037. This High Luminosity LHC scenario, HL-LHC, will require a preparation program of the LHC detectors known as Phase-2 Upgrade. [...] CMS-CR-2018-014.- Geneva : CERN, 2018 - 7 p. Fulltext: PDF; In : 11th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11) in conjunction with 2nd Workshop on SOI Pixel Detectors (SOIPIX2017) at OIST, Okinawa, Japan, Okinawa, Japan, 10 - 15 Dec 2017

2018-02-05
11:25
 Performance of the CMS Phase 1 Pixel Detector / Akgun, Bora (CERN) /CMS Collaboration It is anticipated that the LHC accelerator will reach and exceed the luminosity of L = 2$\times$10$^{34}$cm$^{-2}$s$^{-1}$ during the LHC Run 2 period until 2023. At this higher luminosity and increased hit occupancies the CMS phase-0 pixel detector would have been subjected to severe dead time and inefficiencies introduced by limited buffers in the analog read-out chip and effects of radiation damage in the sensors. [...] CMS-CR-2018-012.- Geneva : CERN, 2018 - 7 p. Fulltext: PDF; In : 11th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11) in conjunction with 2nd Workshop on SOI Pixel Detectors (SOIPIX2017) at OIST, Okinawa, Japan, Okinawa, Japan, 10 - 15 Dec 2017
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