# CMS Conference Reports

2023-02-06
16:00
 Search for new resonances in photon and jet final states using CMS data / Babbar, Jyoti (Panjab U.) /CMS Collaboration Searching for new resonances is one of the ways at the Large Hadron Collider to look for new physics beyond the standard model (BSM), put forward by many theoretical models. Such BSM models predict for instance the existence of substructure of quarks and the quantum black holes, with their signature manifesting in different final states in proton-proton collisions at the LHC. [...] CMS-CR-2023-004.- Geneva : CERN, 2023 - 8 p. Fulltext: PDF; In : 8th Symposium on Prospects in the Physics of Discrete Symmetries, Baden-baden, Germany, 7 - 11 Nov 2022

2023-02-06
15:56
 Tracker alignment in CMS: interplay with pixel local reconstruction / Ventura Barroso, Ana (DESY) /CMS Collaboration The CMS silicon tracking system measures the trajectories of charged particles with a hit resolution of the order of microns in the pixel detector and tens of microns in the strip detector. One of the most important inputs for track reconstruction is the precision with which the tracker geometry is known. [...] CMS-CR-2023-011.- Geneva : CERN, 2023 - 9 p. Fulltext: PDF; In : International Workshop on Semiconductor Pixel Detectors for Tracking and Imaging, Santa Fe, Us, 11 - 16 Dec 2022

2023-02-06
15:54
 Higher-order moments of the elliptic flow distribution in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$~TeV / Milosevic, Jovan (VINCA Inst. Nucl. Sci., B) /CMS Collaboration The collective anisotropic hydrodynamic behavior of charge hadrons is studied using the multiparticle correlation method. The elliptic anisotropy harmonic from different orders of multiparticle cumulants, $v_{2}\{2k\}$, are measured up to the tenth order ($k = 5$) as functions of the collision centrality in lead-lead collisions at an energy of $\sqrt{s_{\mathrm{NN}}}=~5.02$~TeV. [...] CMS-CR-2023-010.- Geneva : CERN, 2023 - 12 p. Fulltext: PDF; In : 11th International Conference of the Balkan Physical Union - BPU11 Congress, Belgrade, Rs, 28 Aug - 1 Sep 2022

2023-02-06
15:54
 Status of the CMS pixel detector / Veszpremi, Viktor (Budapest, RMKI) /CMS Collaboration The tracking detector of the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) is an all-silicon device. It is comprised of two sub-detectors. [...] CMS-CR-2023-013.- Geneva : CERN, 2023 - 14 p. Fulltext: PDF; In : International Workshop on Semiconductor Pixel Detectors for Tracking and Imaging, Santa Fe, Us, 11 - 16 Dec 2022

2023-02-06
15:51
 Results on 3D Pixel Sensors for the CMS Upgrade at the High Luminosity LHC / Ceccarelli, Rudy (INFN, Florence ; Florence U.) /CMS Collaboration The High Luminosity upgrade of the CERN Large Hadron Collider (HL-LHC) calls for new high-radiation tolerant silicon pixel sensors, capable of withstanding, in the innermost tracker layer of the CMS experiment, fluences up to $1.5\times10^{16}\,\mathrm{n_{eq}cm^{-2}}$ (1 MeV equivalent neutrons) before being replaced. An extensive R\&D; program aiming at 3D pixel sensors, built with a top-side only process, has been put in place in CMS in collaboration with FBK (Trento, Italy) and CNM (Barcelona, Spain) foundries. The basic 3D cell size has an area of $25\times100$ $\mu\mathrm{m^2}$ and is connected to a readout chip through a single, central electrode. A number of sensors were interconnected with the CMS pixel ReadOut Chip (CROC): built in 65\,nm technology, the chip will be used in the pixel tracker of the CMS experiment during HL-LHC operations. In this paper the first test beam results of irradiated 3D CROC modules are reported. The analysis of collected data shows excellent performance and hit detection efficiencies close to 99\% measured after a fluence of $1\times10^{16}\,\mathrm{n_{eq}cm^{-2}}$ while meeting the noise occupancy requirements of the innermost tracker layer.. CMS-CR-2023-008.- Geneva : CERN, 2023 - 10 p. Fulltext: PDF; In : International Workshop on Semiconductor Pixel Detectors for Tracking and Imaging, Santa Fe, Us, 11 - 16 Dec 2022

2023-02-06
15:50
 Higgs measurements from CMS / Trevisani, Nicolo' (KIT, Karlsruhe, EKP) /CMS Collaboration Ten years after the discovery of the Higgs boson in 2012, the data collected by CMS during the LHC Run 2 allows measuring many of the properties of this particle. A review of the recent Higgs results from CMS is presented in this report. [...] CMS-CR-2023-007.- Geneva : CERN, 2023 - 9 p. Fulltext: PDF; In : 8th Symposium on Prospects in the Physics of Discrete Symmetries, Baden-baden, Germany, 7 - 11 Nov 2022

2023-02-06
15:48
 Characterization of Planar Pixel Sensors for High-luminosity Upgrade of the CMS Detector / Ebrahimi, Aliakbar (PSI, Villigen) ; Meschini, Marco (INFN, Florence) The luminosity of the Large Hadron Collider (LHC) at CERN will be upgraded to $\rm{7.5 \times 10^{34}}$ $\rm{cm^{-2}s^{-1}}$. The increased luminosity leads to an increased particle fluence and ionizing dose in the detectors. [...] CMS-CR-2023-009.- Geneva : CERN, 2023 - 7 p. Fulltext: PDF; In : International Workshop on Semiconductor Pixel Detectors for Tracking and Imaging, Santa Fe, Us, 11 - 16 Dec 2022

2023-02-06
14:50
 Simulated performance and calibration of CMS Phase-2 Upgrade Inner Tracker sensors / Vami, Tamas Almos (Johns Hopkins U.) ; Swartz, Morris (Johns Hopkins U.) /CMS Collaboration The next upgrade of the Large Hadron Collider (LHC) is planned from 2026 when the collider will move to its High Luminosity phase (HL-LHC). The CMS detector needs to be substantially upgraded during this period to exploit the fourfold increase in luminosity provided by the HL-LHC. [...] CMS-CR-2023-003.- Geneva : CERN, 2023 - 13 p. Fulltext: PDF; In : International Workshop on Semiconductor Pixel Detectors for Tracking and Imaging, Santa Fe, Us, 11 - 16 Dec 2022

2023-02-06
14:49
 Deep learning techniques for energy clustering in the CMS electromagnetic calorimeter / Marzocchi, Badder (Northeastern U.) /CMS Collaboration The reconstruction of electrons and photons in CMS depends on topological clustering of the energy deposited by an incident particle in different crystals of the electromagnetic calorimeter (ECAL). These clusters are formed by aggregating neighbouring crystals according to the expected topology of an electromagnetic shower in the ECAL. [...] CMS-CR-2022-275.- Geneva : CERN, 2022 - 4 p. Fulltext: PDF; In : 2022 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector (RTSD) Conference (NSS/MIC 2022), Milan, Italy, 5 - 12 Nov 2022

2023-01-27
11:16
 Machine Learning in Top Physics in the ATLAS and CMS Collaborations / Keicher, Philip Daniel (Hamburg U.) /ATLAS and CMS Collaborations Machine learning is essential in many aspects of top-quark related physics in the ATLAS and CMS Collaborations. This work aims to give a brief overview over current applications in the two collaborations as well as on-going studies for future applications.\footnote{Copyright 2023 CERN for the benefit of the ATLAS and CMS Collaborations. Reproduction of this article or parts of it is allowed as specified in the CC-BY-4.0 license} CMS-CR-2023-006.- Geneva : CERN, 2023 - 9 p. Fulltext: PDF; In : 15th International Workshop on Top-Quark Physics (TOP 2022), Durham, UK, 4 - 9 Sep 2022