CERN Accelerating science

CERN Preprints

Nyeste elementer:
2019-05-23
13:43
Motorized linear stages for the UA9 experiment / Natochii, Andrii (Centre National de la Recherche Scientifique (FR)) ; Gavrikov, Yury (NRC Kurchatov Institute PNPI (RU)) ; Garattini, Marco (Imperial College (GB)) ; Scandale, Walter (CERN)
In this paper, we describe the mechanical structure of the motorized linear stages that are used for plas- tic scintillator detector placement in a high-energy particle beam during the dedicated UA9 collaboration measurements at CERN, including a detailed overview of the software. [...]
CERN-EN-2019-001.
- 2019. - 15 p.
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2019-05-23
05:03
Spin correlations in top physics at ATLAS and CMS in Run 2 / Linacre, Jacob
Measurements of $\mathrm{t\bar{t}}$ spin correlations are presented in events with top quarks produced in $\mathrm{pp}$ collisions at the LHC. [...]
arXiv:1905.08634 ; CMS CR-2019/053.
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2019-05-23
05:03
Rare top quark production and decays at ATLAS and CMS / Skovpen, Kirill
The most recent studies in the top quark sector are reviewed with the focus on the rare production mechanisms and suppressed decays. [...]
arXiv:1905.08324.
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2019-05-23
05:03
Mixing and time-dependent CP violation in beauty at LHCb / Govorkova, Ekaterina
Recent measurements of the time-dependent CP violation are presented. [...]
arXiv:1905.08465.
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2019-05-22
04:36
RE3/1 and RE4/1 RPC chambers integration in the inner region of the forward muon spectrometer in the CMS experiment / Voevodina, E. ; Crotty, I.
The high pseudorapidity ($\eta$) region of the Compact Muon Solenoid (CMS) muon system is covered by Cathode Strip Chambers only and lacks redundant coverage despite the fact that it is a challenging region for muons in terms of backgrounds and momentum resolution. [...]
arXiv:1905.07814.
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2019-05-22
04:36
Status of the GBAR experiment at CERN / Latacz, Barbara
The GBAR experiment aims at measuring the free fall of antihydrogen atoms in the terrestrial gravitational field. [...]
arXiv:1905.06404.
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2019-05-22
04:36
Sphere Packing and Quantum Gravity / Hartman, Thomas (Cornell U., Phys. Dept.) ; Mazáč, Dalimil (YITP, Stony Brook ; Stony Brook U., New York, SCGP) ; Rastelli, Leonardo (YITP, Stony Brook ; CERN)
We establish a precise relation between the modular bootstrap, used to constrain the spectrum of 2D CFTs, and the sphere packing problem in Euclidean geometry. [...]
arXiv:1905.01319 ; YITP-SB-19-11.
- 72 p.
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2019-05-22
04:35
Flavored Axions / Ziegler, Robert (CERN)
Precision flavor experiments can look for the QCD axion complementarily to usual searches with axion helio- and haloscopes, allowing to test PQ breaking scales as high as $10^{12} \, {\rm GeV}$. [...]
arXiv:1905.01084.
- 8 p.
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2019-05-22
04:35
Temperature dependence of $\eta/s$: uncertainties from the equation of state / Auvinen, Jussi (Belgrade, Inst. Phys.) ; Eskola, Kari J. (Helsinki U. ; Helsinki Inst. of Phys.) ; Huovinen, Pasi (Wroclaw U.) ; Niemi, Harri (Helsinki U. ; Helsinki Inst. of Phys.) ; Paatelainen, Risto (CERN) ; Petreczky, Péter (Brookhaven)
We perform a global model-to-data comparison on Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV and Pb+Pb collisions at $2.76$ TeV and $5.02$ TeV, using a 2+1D hydrodynamics model with the EKRT initial state and a shear viscosity over entropy density ratio $(\eta/s)(T)$ with a linear $T$ dependence. [...]
arXiv:1811.01792.
- 8 p.
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2019-05-20
08:47
Inclusive J/$\psi$ production at mid-rapidity in pp collisions at $\sqrt{s}$ = 5.02 TeV / ALICE Collaboration
Inclusive J/$\psi$ production is studied in minimum-bias proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 5.02 TeV by ALICE at the CERN LHC. [...]
arXiv:1905.07211 ; CERN-EP-DRAFT-ALICE-2019-014.
- 21 p.
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