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CMS Conference Reports

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2022-10-03
18:08
The CMS Pixel Detector for the High Luminosity LHC / Cassese, Antonio (INFN, Florence) /CMS Collaboration
The LHC machine will be upgraded to increase its peak luminosity to $5\mbox{--}7.5\times10^{34}$ cm$^{-2}$s$^{-1}$ and to possibly reach an integrated luminosity of $3000\mbox{--}4000\;$fb$^{-1}$, with an average number of pileup events of $140\mbox{--}200$. The CMS experiment needs to be upgraded to keep up with the new challenges: the unprecedented radiation environment translates to the detector requirement of high resilience, while the increased number of events per bunch crossing requires higher detector granularity. Thus a completely new Inner Tracker will be installed. Design choices for the Inner Tracker Phase-2 upgrade, highlighting R\&D; activities and technological approaches, will be presented..
CMS-CR-2022-154.- Geneva : CERN, 2022 - 8 p. Fulltext: PDF;
In : 23rd International Workshop for Radiation Imaging Detectors, Riva Del Garda, It, 26 - 30 Jun 2022

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2022-10-03
18:05
Heavy-ion physics with CMS detector / Petrushanko, Sergey (Moscow State U.) /CMS Collaboration
We present a selection of very recent results by the CMS collaboration on heavy-ion physics at the LHC (CERN)..
CMS-CR-2022-150.- Geneva : CERN, 2022 - 16 p. Fulltext: PDF;
In : 72nd International Meeting on Nuclear Spectroscopy and Nuclear Structure : Fundamental problems and applications (Nucleus-2022), Moscow, Russia, 11 - 16 Jul 2022

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2022-09-27
17:02
Beyond the standard model searches in the top quark sectors at ATLAS and CMS / Chatterjee, Suman (Vienna, OAW) /ATLAS and CMS Collaborations
Searches for new physics are one of the most active fields of research at LHC. Due to its large mass, the top quark is predicted to have an enhanced coupling with the fields of new physics in several theoretical models. Multiple techniques are developed to probe new physics using the top quark as a tool in different phase space regions. [...]
CMS-CR-2022-145.- Geneva : CERN, 2022 - 7 p. Fulltext: PDF;
In : The Tenth Annual Large Hadron Collider Physics (LHCP2022), Online, Online, 16 - 20 May 2022

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2022-09-27
17:02
Resonant and non resonant searches at ATLAS and CMS / Ghosh, Saranya Samik (CERN) /ATLAS and CMS Collaborations
Recent results from the ATLAS and CMS Experiments are presented on searches for new physics beyond the standard model of particle physics probing resonant and non-resonant signatures
CMS-CR-2022-138.- Geneva : CERN, 2022 - 6 p. Fulltext: PDF;
In : The Tenth Annual Large Hadron Collider Physics (LHCP2022), Online, Online, 16 - 20 May 2022

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2022-09-27
17:02
Upgrade Calorimetry towards high-granularity / Paganis, Efstathios (Taiwan, Natl. Taiwan U.) /CMS Collaboration
The increase of the instantaneous luminosity during the High-Luminosity LHC (HL-LHC, phase 2) places stringent requirements on the detectors. New proposed calorimeters have to be designed to operate in the harsh radiation environment at the HL-LHC, where the average number of interactions per bunch crossing is expected to exceed 140. [...]
CMS-CR-2022-136.- Geneva : CERN, 2022 - 7 p. Fulltext: PDF;
In : The Tenth Annual Large Hadron Collider Physics (LHCP2022), Online, Online, 16 - 20 May 2022

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2022-09-27
17:02
Level-1 Triggering on High-Granularity Calorimeter information at the HL-LHC / Portales, Louis (Ecole Polytechnique) /CMS Collaboration
The CMS collaboration is building the high granularity calorimeter (HGCAL) for the endcap regions as part of its planned upgrade for the High-Luminosity LHC. The calorimeter data will form part of the Level-1 trigger (hardware) of the CMS experiment, reducing the event rate from the nominal 40 MHz to up to 750 kHz with a decision time (latency) of 10 microseconds. [...]
CMS-CR-2022-118.- Geneva : CERN, 2022 - 10 p. Fulltext: PDF;
In : 19th International Conference on Calorimetry in Particle Physics, Brighton, United Kingdom, 16 - 20 May 2022

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2022-09-20
12:20
Dijet events with large rapidity separation in proton-proton collisions at $\sqrt{s} = 2.76 $ TeV with CMS detector / Egorov, Anatolii (St. Petersburg, INP) /CMS Collaboration
The new search for Balitsky-Fadin-Kuraev-Lipatov (BFKL) evolution effects is performed at the Large Hadron Collider by the Compact Muon Solenoid experiment. The cross sections for inclusive and Mueller-Navelet dijet production are measured as a function of the rapidity separation between the jets in proton-proton collisions at $\sqrt{s} = 2.76\unit{TeV}$ for jets with transverse momentum $p_{\perp} > 35\unit{GeV}$ and rapidity $\vert y\vert < 4.7$. [...]
CMS-CR-2022-152.- Geneva : CERN, 2022 - 16 p. Fulltext: PDF;
In : 72nd International Meeting on Nuclear Spectroscopy and Nuclear Structure : Fundamental problems and applications (Nucleus-2022), Moscow, Russia, 11 - 16 Jul 2022

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2022-09-20
12:17
Upgraded CMS Fast Beam Condition Monitor for LHC Run 3 Online Luminosity and Beam Induced Background Measurements / Wanczyk, Joanna Malgorzata (CERN) /CMS Collaboration
The fast Beam Condition Monitor (BCM1F) for the CMS experiment at the LHC was upgraded for precision luminosity measurement in the demanding conditions foreseen for LHC Run 3. BCM1F has been rebuilt with new silicon diodes, produced on the CMS Phase 2 Outer Tracker PS silicon wafers. [...]
CMS-CR-2022-144.- Geneva : CERN, 2022 - p. Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022

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2022-09-19
12:40
Measurement of nonprompt and prompt $D^0$ azimuthal anisotropy in Pb-Pb collisions at $\sqrt{s_{_{\mathrm{NN}}}} =$ 5.02 TeV / Stojanovic, Milan (Purdue U.) /CMS Collaboration
Heavy quarks are primarily produced via initial hard scatterings, and thus carry information about the early stages of the Quark-Gluon Plasma (QGP). Measurements of the azimuthal anisotropy of the final-state heavy flavor hadrons provide information about the initial collision geometry, its fluctuation, and more importantly, the mass dependence of energy loss in QGP. [...]
CMS-CR-2022-141.- Geneva : CERN, 2022 - 5 p. Fulltext: PDF;
In : The 20th International Conference on Strangeness in Quark Matter, Busan, Kr, 13 - 17 Jun 2022

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2022-09-19
12:40
Studies of heavy quark diffusion in QGP with nonprompt $D^0$ collectivity and jet-$D^0$ angular correlations in PbPb collisions / Stojanovic, Milan (Purdue U.) /CMS Collaboration
Measurements of the correlations of the final-state heavy flavor hadrons are of great interest since they provide information about the initial collision geometry and its fluctuation. More importantly, those measurements could reveal the mass dependence of parton energy loss and quark diffusion in the Quark-Gluon Plasma (QGP). [...]
CMS-CR-2022-140.- Geneva : CERN, 2022 - 7 p. Fulltext: PDF;
In : XXIXth International Conference on Ultra-relativistic Nucleus-Nucleus Collisions, Krakow, Online, Pl, 4 - 10 Apr 2022

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