CERN Accelerating science

CERN Preprints

Letzte Einträge:
2019-12-11
04:46
Probing the scale of grand unification with gravitational waves / Buchmuller, Wilfried ; Domcke, Valerie ; Murayama, Hitoshi ; Schmitz, Kai
The spontaneous breaking of $U(1)_{B-L}$ around the scale of grand unification can simultaneously account for hybrid inflation, leptogenesis, and neutralino dark matter, thus resolving three major puzzles of particle physics and cosmology in a single predictive framework. [...]
arXiv:1912.03695 ; CERN-TH-2019-215 ; DESY 19-210 ; IPMU 19-0179.
- 6 p.
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2019-12-11
04:46
Timing Performance of a Micro-Channel-Plate Photomultiplier Tube / Bortfeldt, J. (CERN) ; Brunbauer, F. (CERN) ; David, C. (CERN) ; Desforge, D. (IRFU, Saclay) ; Fanourakis, G. (Democritos Nucl. Res. Ctr.) ; Gallinaro, M. (LIP, Lisbon) ; Garcıa, F. (Helsinki U.) ; Giomataris, I. (IRFU, Saclay) ; Gustavsson, T. (LIDYL, Saclay) ; Guyot, C. (IRFU, Saclay) et al.
The spatial dependence of the timing performance of the R3809U-50 Micro-Channel-Plate PMT (MCP-PMT) by Hamamatsu was studied in high energy muon beams. [...]
arXiv:1909.12604.
- 6 p.
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2019-12-10
04:11
Precision calculations of dark matter relic abundance / Ala-Mattinen, Kalle ; Kainulainen, Kimmo
The dark matter annihilation channels sometimes involve sharp resonances. [...]
arXiv:1912.02870 ; CERN-TH-2019-214.
- 20 p.
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2019-12-09
18:52
Determination of the strong coupling constant ${\alpha_S}(m_{\mathrm{Z}})$ from measurements of inclusive $\mathrm{W}^{\pm}$ and $Z$ boson production cross sections in proton-proton collisions at $\sqrt{s} = $ 7 and 8 TeV
Twelve measurements of inclusive cross sections of $\mathrm{W^{\pm}} $ and $\mathrm{Z}$ boson production, performed in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV, are compared with perturbative quantum chromodynamics calculations at next-to-next-to-leading order (NNLO) accuracy obtained with the CT14, HERAPDF2.0, MMHT14, and NNPDF3.0 parton distribution functions (PDFs). [...]
CERN-EP-2019-259 ; CMS-SMP-18-005-003.
- 2019.
Additional information for the analysis - CMS AuthorList - Fulltext

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2019-12-09
13:47
Measurement of $CP$ violation in $B^0\to D^{*\pm} D^{\mp}$ decays
The decay-time-dependent $CP$ asymmetry in $B^0 \to D^{*\pm}D^{\mp}$ decays is measured using a data set corresponding to an integrated luminosity of$9$fb$^{-1}$ recorded by the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. [...]
CERN-EP-2019-264 ; arXiv:1912.03723 ; LHCB-PAPER-2019-036.
- 2019.
Fulltext - Related data file(s) - Supplementary information

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2019-12-09
11:43
Behaviour of copper during initial conditioning in the pulse DC system / Profatilova, Iaroslava (CERN) ; Wuensch, Walter (CERN) ; Calatroni, Sergio (CERN)
Conditioning is a process that is used to improve the quality of RF accelerating structures before starting operation at full field and power. [...]
CERN-ACC-2019-0058 ; CLIC-Note-1145.
- 2019. - 10 p.
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2019-12-08
12:49
Double Higgs boson production and Higgs self-coupling extraction at CLIC / Roloff, Philipp Gerhard (CERN) ; Schnoor, Ulrike (CERN) ; Simoniello, Rosa (Johannes Gutenberg Universitaet Mainz (DE)) ; Xu, B (University of Cambridge, United Kingdom)
The Compact Linear Collider (CLIC) is a future electron-positron collider that will allow measurement of the trilinear Higgs self-coupling in double Higgs boson events produced at its high-energy stages with collision energies of √s = 1.5 and 3 TeV. The sensitivity to the Higgs self-coupling is driven by the measurements of the cross section and the invariant mass distribution of the Higgs-boson pair in the W-boson fusion process, e+e− → HHνeνe. [...]
CLICdp-Pub-2019-007.- Geneva : CERN, 2019 - 20. Fulltext: PDF;

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2019-12-07
21:58
Performance of the reconstruction and identification of high-momentum muons in proton-proton collisions at $\sqrt{s} = $ 13 TeV / CMS Collaboration
The CMS detector at the LHC has recorded events from proton-proton collisions, with muon momenta reaching up to 1.8 TeV in the collected dimuon samples. [...]
arXiv:1912.03516 ; CMS-MUO-17-001 ; CERN-EP-2019-238 ; CMS-MUO-17-001-003.
- 2019.
Additional information for the analysis - CMS AuthorList - Fulltext - Fulltext

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2019-12-06
14:37
Silicon Vertex & Tracking Detectors for the Compact Linear Collider / Spannagel, Simon (University of Glasgow (GB))
CLIC is a proposed linear e+ e- collider with center-of-mass energies of up to 3 TeV. Its main objectives are precise top quark, Higgs boson and Beyond Standard Model physics. [...]
CLICdp-Conf-2019-013.- Geneva : CERN, 2019 - 11. Fulltext: PDF;

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2019-12-06
11:29
BE Department Annual Report 2018 / Collier, Paul (CERN) ; Arduini, Gianluigi (CERN) ; Billen, Ronny (CERN) ; Hatziangeli, Eugenia (CERN) ; Jensen, Erk (CERN) ; Jones, Rhodri (CERN) ; Laderi, Efthymia (CERN) ; Lamont, Mike (CERN) ; Mackney, Anna (CERN) ; Sollander, Peter (CERN) et al.
The Beams Department hosts the Groups responsible for the beam generation, acceleration, diagnostics, controls and performance optimization for the whole CERN accelerator complex. [...]
CERN-ACC-2019-0057.
- 2019. - 96 p.
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