2018-08-16
10:41 |
Evidence for light-by-light scattering in ultraperipheral PbPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV
/ d'Enterria, David (CERN)
/CMS Collaboration
Evidence for light-by-light (LbL) scattering, $\gamma\gamma\to\gamma\gamma$, in ultraperipheral PbPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV is reported. LbL scattering processes are selected in events with just two photons produced, with transverse energy $E_T^{\gamma}>2$ GeV, pseudorapidity $\mid\eta^{\gamma}\mid<2.4$; and diphoton invariant mass $m^{\gamma\gamma}>5$~GeV, transverse momentum $p_{T}^{\gamma\gamma} <1$~GeV, and acoplanarity $(1-\Delta \phi^{\gamma\gamma}/\pi)<0.01$. [...]
CMS-CR-2018-159.-
Geneva : CERN, 2018 - 5 p.
Fulltext: PDF;
In : The 27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions, Venice, Italy, 13 - 19 May 2018
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2018-08-16
10:41 |
Rare decays at CMS
/ Piedra Gomez, Jonatan (Cantabria Inst. of Phys.)
/CMS Collaboration
Searches for flavour changing neutral currents (FCNC) in events with
top quarks and the Z or the Higgs boson are presented by the CMS Collaboration.
These searches use proton-proton collision events taken by the CMS experiment
at the Large Hadron Collider (LHC), built by the European Organization for
Nuclear Research (CERN). Upper limits at $95\%$ confidence level are set on the
branching fractions of ${\rm t \to qZ}$ and ${\rm t \to qH}$ decays. [...]
CMS-CR-2018-157.-
Geneva : CERN, 2018 - 8 p.
Fulltext: PDF;
In : XIV International Conference on Heavy Quarks and Leptons , Yamagata, Japan, 27 May - 1 Jun 2018
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2018-08-16
10:40 |
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2018-08-16
10:40 |
Observation of $\mathrm{t}\overline{\mathrm{t}}\mathrm{H}$ production at CMS
/ Salerno, Daniel Nicholas (Zurich U.)
/CMS Collaboration
The observation of Higgs boson production in association with a top quark-antiquark pair is reported, based on a combined analysis of proton-proton collision data at center-of-mass energies of $\sqrt{s}=7$, 8 and 13 TeV, corresponding to integrated luminosities of up to 5.1, 19.7, and 35.9 fb${}^{-1}$, respectively. The data were collected with the CMS detector at the CERN LHC. [...]
CMS-CR-2018-138.-
Geneva : CERN, 2018 - 5 p.
Fulltext: PDF;
In : 30th Rencontres de Blois Particle Physics and Cosmology, Blois, France, 3 - 8 Jun 2018
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2018-08-16
10:39 |
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2018-08-16
10:38 |
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2018-08-16
07:02 |
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Analysis of the radiation hardness and charge collection efficiency of thinned silicon diodes
/ Boscardin, M (ITC-IRST, Trento) ; Bruzzi, M (INFN, Florence ; Florence U.) ; Candelori, A (INFN, Padua) ; Dalla Betta, G -F (U. Trento (main)) ; Focardi, E (INFN, Florence ; Florence U.) ; Khomenkov, V (INFN, Padua) ; Piemonte, C (ITC-IRST, Trento) ; Ronchin, S (ITC-IRST, Trento) ; Tosi, C (U. Florence (main)) ; Zorzi, N (ITC-IRST, Trento)
Due to their low depletion voltage, even after high particle fluences, improved tracking precision and momentum resolution and reduced material budget, thin substrates are one of the possible choices to provide radiation hard detectors for future high energy physics experiments. [...]
2004. - 4 p.
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2018-08-16
07:02 |
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2018-08-16
04:25 |
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2018-08-16
04:25 |
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