CERN Accelerating science

CERN Published Articles

Letzte Einträge:
2016-06-28
06:25
Radiation hardness of plastic scintillators for the Tile Calorimeter of the ATLAS detector / Jivan, H (U. Witwatersrand, Johannesburg, Sch. Phys. ; Pretoria, CSIR) ; Mellado, B (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Sideras-Haddad, E (U. Witwatersrand, Johannesburg, Sch. Phys. ; Pretoria, CSIR) ; Erasmus, R (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Liao, S (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Madhuku, M (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Peters, G (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Solvyanov, O (CERN)
The radiation damage in polyvinyl toluene based plastic scintillator EJ200 obtained from ELJEN technology was investigated. This forms part of a comparative study conducted to aid in the upgrade of the Tile Calorimeter of the ATLAS detector during which the Gap scintillators will be replaced. [...]
2015 - 7 p. - Published in : J. Phys. : Conf. Ser. 623 (2015) 012016 Fulltext: PDF;
In : Kruger2014: The International Workshop on Discovery Physics at the LHC, Skukuza, Mpumulanga, South Africa, 1 - 5 Dec 2014, pp.012016

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2016-06-28
06:25
HistFitter - A flexible framework for statistical data analysis / Lorenz, J M (Munich U. ; Munich, Tech. U., Universe) ; Baak, M (CERN) ; Besjes, G J (Nijmegen U., IMAPP ; NIKHEF, Amsterdam) ; Côté, D (Texas U., Arlington) ; Koutsman, A (TRIUMF) ; Short, D (Oxford U.)
We present a software framework for statistical data analysis, called HistFitter, that has extensively been used in the ATLAS Collaboration to analyze data of proton-proton collisions produced by the Large Hadron Collider at CERN. Most notably, HistFitter has become a de-facto standard in searches for supersymmetric particles since 2012, with some usage for Exotic and Higgs boson physics. [...]
2015 - 6 p. - Published in : J. Phys. : Conf. Ser. 608 (2015) 012049 Fulltext: PDF;
In : 16th International workshop on Advanced Computing and Analysis Techniques in physics (ACAT), Prague, Czech Republic, 1 - 5 Sep 2014, pp.012049

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2016-06-28
06:25
Recent Highlights of the ISOLDE Facility / Borge, M J G (CERN ; Madrid, Inst. Estructura Materia)
The on-line isotope mass separator ISOLDE is the radioactive beam facility of CERN. Its objective is the production and research of nuclei far from stability. [...]
2015 - 7 p. - Published in : J. Phys. : Conf. Ser. 580 (2015) 012049 Fulltext: PDF;
In : 11th International Spring Seminar on Nuclear Physics: Shell Model and Nuclear Structure : Achievements of the past two decades, Ischia, Italy, 12 - 16 May 2014, pp.012049

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2016-06-27
06:55
CERN needs for future accelerators in high energy physics / Holzer, B J (CERN)
Several new accelerator projects are being studied at CERN in a broad energy range from atomic to Tera scale level. The beam energy as well as the beam quality requirements raise the need for new future acceleration concepts to achieve more efficient accelerating structures and / or more compact devices. [...]
2015 - 6 p. - Published in : Eur. Phys. J. Spec. Top. 224 (2015) 2615-2620

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2016-06-27
06:55
Radiation hardness of plastic scintillators for the Tile Calorimeter of the ATLAS detector / Jivan, H (U. Witwatersrand, Johannesburg, Sch. Phys. ; Pretoria, CSIR) ; Sideras-Haddad, E (U. Witwatersrand, Johannesburg, Sch. Phys. ; Pretoria, CSIR) ; Erasmus, R (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Liao, S (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Madhuku, M (iThemba LABS) ; Peters, G (U. Witwatersrand, Johannesburg, Sch. Phys. ; Pretoria, CSIR) ; Sekonya, K (U. Witwatersrand, Johannesburg, Sch. Phys. ; iThemba LABS) ; Solvyanov, O (CERN)
The radiation damage in polyvinyl toluene based plastic scintillator EJ200 obtained from ELJEN technology was investigated. This forms part of a comparative study conducted to aid in the upgrade of the Tile Calorimeter of the ATLAS detector during which the Gap scintillators will be replaced. [...]
2015 - 6 p. - Published in : J. Phys. : Conf. Ser. 645 (2015) 012019 Fulltext: PDF; IOP Open Access article: PDF;
In : Workshop on High Energy Particle Physics, Johannesburg, South Africa, 11 - 13 Feb 2015, pp.012019

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2016-06-27
06:55
Identified charged hadron production in Pb-Pb collisions at $\sqrt {s_{NN} } = 2.76$ TeV with the ALICE experiment at the LHC / Milano, Leonardo (CERN)
Quark Gluon Plasma (QGP) is an unavoidable consequence of Quantum Chromodynamics (QCD). High-energy heavy-ion collisions offer the unique possibility to reproduce in the laboratory the conditions expected during the very first stages of the evolution of the Universe. [...]
2015 - Published in : Eur. Phys. J. Plus 130 (2015) 193

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2016-06-27
06:55
High-precision half-life measurements of the T=1/2 mirror β decays F17 and Cl33 / Grinyer, J (GANIL) ; Grinyer, G F (GANIL) ; Babo, M (GANIL) ; Bouzomita, H (GANIL) ; Chauveau, P (GANIL) ; Delahaye, P (GANIL) ; Dubois, M (GANIL) ; Frigot, R (GANIL) ; Jardin, P (GANIL) ; Leboucher, C (GANIL) et al.
Background: Measurements of the ft values for T=1/2 mirror β+ decays offer a method to test the conserved vector current hypothesis and to determine Vud, the up-down matrix element of the Cabibbo-Kobayashi-Maskawa matrix. In most mirror decays used for these tests, uncertainties in the ft values are dominated by the uncertainties in the half-lives. [...]
2015 - 7 p. - Published in : Phys. Rev. C 92 (2015) 045503 APS Open Access article: PDF;

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2016-06-27
06:55
Status of LHC Searches for SUSY without R-Parity / Franceschini, Roberto (CERN)
In this contribution we briefly review the status of current searches for supersymmetry at the Large Hadron Collider, focusing especially on viable sub-TeV colored superpartners which can appear in nonstandard scenarios. The presented material covers mostly signals that do not crucially rely on the presence of large missing transverse momentum, with special emphasis on R-parity violating supersymmetry. [...]
2015 - 16 p. - Published in : Adv. High Energy Phys. 2015 (2015) 581038 Fulltext: PDF; Hindawi Open Access article: PDF;

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2016-06-27
06:55
A Gas Target Internal to the LHC for the Study of pp Single-Spin Asymmetries and Heavy Ion Collisions / Barschel, Colin (CERN) ; Lenisa, Paolo (Ferrara U. ; INFN, Ferrara) ; Nass, Alexander (Julich, Forschungszentrum) ; Steffens, Erhard (Erlangen - Nuremberg U.)
We discuss the application of an open storage cell as gas target for a proposed LHC fixed-target experiment AFTER@LHC. The target provides a high areal density at minimum gas input, which may be polarized ^1H, ^2H, or ^3He gas or heavy inert gases in a wide mass range. [...]
2015 - 6 p. - Published in : Adv. High Energy Phys. 2015 (2015) 463141 Fulltext: PDF; Hindawi Open Access article: PDF;

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2016-06-27
06:55
Use of a Continuous Wave Laser and Pockels Cell for Sensitive High-Resolution Collinear Resonance Ionization Spectroscopy / de Groote, R  P (Leuven U.) ; Budinčević, I (Leuven U.) ; Billowes, J (Manchester U.) ; Bissell, M  L (Leuven U. ; Manchester U.) ; Cocolios, T  E (Manchester U.) ; Farooq-Smith, G  J (Manchester U.) ; Fedosseev, V  N (CERN) ; Flanagan, K  T (Manchester U.) ; Franchoo, S (Orsay, IPN) ; Garcia Ruiz, R F (Leuven U.) et al.
New technical developments have led to a 2 orders of magnitude improvement of the resolution of the collinear resonance ionization spectroscopy (CRIS) experiment at ISOLDE, CERN, without sacrificing the high efficiency of the CRIS technique. Experimental linewidths of 20(1) MHz were obtained on radioactive beams of francium, allowing us for the first time to determine the electric quadrupole moment of the short lived [t1/2=22.0(5)  ms] Fr219 Qs=-1.21(2)  eb, which would not have been possible without the advantages offered by the new method. [...]
2015 - 6 p. - Published in : Phys. Rev. Lett. 115 (2015) 132501 APS Open Access article: PDF;

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