CMS Conference Reports

Ultimi arrivi:
2019-10-23
16:25
 Searches for Light Higgs Bosons at the CMS Experiment / Kalogeropoulos, Alexis (Princeton U.) /CMS Collaboration We report on recent results by the CMS Collaboration on searches for light Higgs bosons based on a sample of proton-proton collision data at $\sqrt{s} =13$ TeV, corresponding to a total integrated luminosity of 35.9 fb$^{-1}$.. CMS-CR-2019-098.- Geneva : CERN, 2019 - 7 p. Fulltext: PDF; In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019

2019-10-23
16:15
 Rare top quark production in CMS ttZ, tZ, tgamma, and tttt production / Alvarez Gonzalez, Barbara (Oviedo U.) /CMS Collaboration A comprehensive set of measurements of top quark pair and single top quark production in association with EWK bosons (Z or $\gamma$) is presented. The results are compared to theory predictions and re-interpreted as searches for new physics inducing deviations from the standard model predictions using an effective field theory approach. [...] CMS-CR-2019-228.- Geneva : CERN, 2019 - 5 p. Fulltext: PDF; In : 31st Recontres de Blois (Particle Physics and Cosmology), Blois, France, 2 - 7 Jun 2019

2019-10-23
16:10
 SEARCHES FOR DARK MATTER AT THE LHC / Tapper, Alexander (Imperial Coll., London) /ATLAS and CMS Collaborations Astrophysical measurements show that around 85\% of the universe consists of dark matter, the origin of which is unknown. Dedicated experiments search for dark matter in the cosmos interacting directly and through annihilation [...] CMS-CR-2019-210.- Geneva : CERN, 2019 - 9 p. Fulltext: PDF; In : 31st Recontres de Blois (Particle Physics and Cosmology), Blois, France, 2 - 7 Jun 2019

2019-10-23
15:59
 Recent Results on Heavy Flavour from CMS / Chistov, Ruslan (Moscow Phys. Eng. Inst.) /CMS Collaboration In this talk I report recent results on heavy flavor physics from pp collisions at CMS.It includes spectroscopy of open or hidden beauty hadrons from pp collision data at $\sqrt{s}=8$ and 13 TeV.These studies are aimed to gain new knowledge on the properties of beauty hadrons which enchance our understanding of QCD.. CMS-CR-2019-201.- Geneva : CERN, 2019 - 7 p. Fulltext: PDF; In : 18th International Conference on Strangeness in Quark Matter, Bari, Italy, 10 - 15 Jun 2019

2019-10-22
10:33
 Search for standard model production of four top quarks / Fangmeier, Caleb Arthur (Nebraska U.) /CMS Collaboration This talk describes efforts towards a first measurement of the standard model production of four top quarks with results based on up to the full Run 2 dataset. It includes implications of this measurement to constrain properties of the Higgs Boson and new physics scenarios including dark matter.. CMS-CR-2019-170.- Geneva : CERN, 2019 - 6 p. Fulltext: PDF; In : 2019 Meeting of the Division of Particles & Fields of the American Physical Society, Boston, United States Of America, 29 Jul - 2 Aug 2019

2019-10-18
15:31
 Performance of the BRIL luminometers at CMS in Run 2 / Karacheban, Olena (CERN) /CMS Collaboration CMS features three luminosity subdetectors capable of providing real-time (?online?) luminosity on a bunch-by-bunch level independently of the main CMS data acquisition system: the Fast Beam Conditions Monitor (BCM1F), the Hadron Forward (HF) calorimeter, and the Pixel Luminosity Telescope (PLT). These luminometers have operated since the beginning of Run 2 (2015-2018) at the LHC. [...] CMS-CR-2019-140.- Geneva : CERN, 2019 - 6 p. Fulltext: PDF; In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019

2019-10-18
15:31
 Optimizing the performance of the CMS ECAL trigger for Runs 2 and 3 of the CERN LHC / Tishelman Charny, Abraham (Northeastern U.) /CMS Collaboration The CMS Electromagnetic Calorimeter (ECAL) is a high resolution crystal calorimeter operating at the CERN LHC. It is responsible for the identification and precise reconstruction of electrons and photons in CMS, which were crucial in the discovery and subsequent characterization of the Higgs boson. [...] CMS-CR-2019-155.- Geneva : CERN, 2019 - 12 p. Fulltext: PDF; In : 2019 Meeting of the Division of Particles & Fields of the American Physical Society, Boston, United States Of America, 29 Jul - 2 Aug 2019

2019-10-16
16:41
 Firmware oriented trigger algorithm for CMS Drift Tubes in HL-LHC / Goy Lopez, Silvia (Madrid, CIEMAT) A full replacement of the muon trigger system in the CMS (Compact Muon Solenoid) detector is envisaged for operating at the maximum instantaneous luminosities expected in HL-LHC (High Luminosity Large Hadron Collider) of about $5-7.5\times10^{34}$~cm$^{-2}$s$^{-1}$. Under this scenario, the new on detector electronics that is being designed for the DT (Drift Tubes) detector will forward all the chamber information at its maximum time resolution. [...] CMS-CR-2019-074.- Geneva : CERN, 2019 - 7 p. Fulltext: PDF; In : Connecting the Dots and Workshop on Intelligent Trackers (CTD/WIT 2019) , Valencia, Spain, 2 - 5 Apr 2019

2019-10-16
16:35
 Level-1 track finding with an all-FPGA system at CMS for the HL-LHC / James, Thomas Owen (CERN) /CMS Collaboration The Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) is designed to study a wide range of high energy physics phenomena. It employs a large all-silicon tracker within a 3.8\,T magnetic solenoid, which allows precise measurements of transverse momentum ($p_\mathrm{T}$) and vertex position. [...] CMS-CR-2019-083.- Geneva : CERN, 2019 - 10 p. Fulltext: PDF; In : Connecting the Dots and Workshop on Intelligent Trackers (CTD/WIT 2019) , Valencia, Spain, 2 - 5 Apr 2019

2019-10-16
16:34
 Emittance scans for CMS luminosity calibration in Run 2 / Karacheban, Olena (CERN) /CMS Collaboration The absolute luminosity calibration for LHC experiments is derived from dedicated beam separation scans, known as van der Meer (vdM) scans. However, vdM scans are performed with special beam optics, wide beams, and fewer, well-separated bunches to reduce potential systematic effects, and only once per year per collision mode. [...] CMS-CR-2019-141.- Geneva : CERN, 2019 - 6 p. Fulltext: PDF; In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019