CERN Accelerating science

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2020-07-15
04:37
CMS RPC Background -- Studies and Measurements / Hadjiiska, R. (Sofiya, Inst. Nucl. Res.) ; Samalan, A. (Gent U.) ; Tytgat, M. (Gent U.) ; Zaganidis, N. (Gent U.) ; Alves, G.A. (Rio de Janeiro, CBPF) ; Marujo, F. (Rio de Janeiro, CBPF) ; Torres Da Silva De Araujo, F. (Rio de Janeiro State U.) ; Da Costa, E.M. (Rio de Janeiro State U.) ; De Jesus Damiao, D. (Rio de Janeiro State U.) ; Nogima, H. (Rio de Janeiro State U.) et al.
The expected radiation background in the CMS RPC system has been studied using the MC prediction with the CMS FLUKA simulation of the detector and the cavern. [...]
arXiv:2005.12769.
- 6 p.
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2020-07-15
04:37
Detecting circular polarisation in the stochastic gravitational-wave background from a first-order cosmological phase transition / Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn) ; Fairbairn, Malcolm (King's Coll. London) ; Lewicki, Marek (King's Coll. London ; Warsaw U.) ; Vaskonen, Ville (King's Coll. London ; NICPB, Tallinn) ; Wickens, Alastair (King's Coll. London)
We discuss the observability of circular polarisation of the stochastic gravitational-wave background (SGWB) generated by helical turbulence following a first-order cosmological phase transition, using a model that incorporates the effects of both direct and inverse energy cascades. [...]
arXiv:2005.05278.
- 30 p.
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2020-07-14
12:16
Observation of enhanced double parton scattering in proton-lead collisions at $\sqrt{s_\mathrm{NN}}=8.16$ TeV
A study of prompt charm-hadron pair production in proton-lead collisions at $\sqrt{s_\mathrm{NN}}= 8.16$ TeV is performed using data corresponding to an integrated luminosity of about 30 nb${}^{-1}$, collected with the LHCb experiment. [...]
CERN-EP-2020-119 ; LHCB-PAPER-2020-010.
- 2020.
Fulltext - Related data file(s) - Supplementary information

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2020-07-14
12:00
Technical Note N°92 : Calculation of Eddy curent effects in the vacuum chambers of the BOOSTER Synchrotron quadrupole and bending magnets / Asner, A
MPS-INT-MA-67-11 ; CERN-MPS-INT-MA-67-11.
- 1967. - 17 p.
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2020-07-14
04:06
Unifying dark matter, dark energy and inflation with a fuzzy dark fluid / Arbey, A. ; Coupechoux, J.-F.
Scalar fields appear in many cosmological models, in particular in order to provide explanations for dark energy and inflation, but also to emulate dark matter. [...]
arXiv:2007.05376 ; CERN-TH-2020-117.
- 23 p.
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2020-07-14
04:06
Integrating LHCb workflows on HPC resources: status and strategies / Stagni, Federico (CERN) ; Valassi, Andrea (CERN) ; Romanovskiy, Vladimir (Kurchatov Inst., Moscow)
High Performance Computing (HPC) supercomputers are expected to play an increasingly important role in HEP computing in the coming years. [...]
arXiv:2006.13603.
- 9 p.
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2020-07-14
04:06
Exothermic Dark Matter for XENON1T Excess / Lee, Hyun Min (Chung-Ang U. ; CERN)
Motivated by the recent excess in the electron recoil from XENON1T experiment, we consider the possibility of exothermic dark matter, which is composed of two states with mass splitting. [...]
arXiv:2006.13183.
- 16 p.
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2020-07-14
04:06
Temperature dependence of $\eta/s$ of strongly interacting matter: effects of the equation of state and the parametric form of $(\eta/s)(T)$ / Auvinen, Jussi (Belgrade, Inst. Phys.) ; Eskola, Kari J. (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Huovinen, Pasi (Belgrade, Inst. Phys. ; Wroclaw U.) ; Niemi, Harri (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Paatelainen, Risto (CERN) ; Petreczky, Peter (Brookhaven)
We investigate the temperature dependence of the shear viscosity to entropy density ratio $\eta/s$ using a piecewise linear parametrization. [...]
arXiv:2006.12499.
- 17 p.
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2020-07-14
04:05
Mathematical and Numerical Methods for Non-linear Beam Dynamics / Herr, Werner (CERN)
One of the most severe limitations in particle accelerators and beam transport are non-linear effects. [...]
arXiv:2006.09052.
- 39 p.
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2020-07-14
04:05
Direct Vlasov solvers / Mounet, Nicolas (CERN)
In these proceedings we will describe the theory and practical steps required to build Vlasov solvers such as those commonly used to compute coherent instabilities in synchrotrons. [...]
arXiv:2006.09080.
- 25 p.
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