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CERN Published Articles

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2019-11-12
06:10
Fracture functions in different kinematic regions and their factorizations / Chen, Kai-bao (Beijing, Inst. Theor. Phys. ; Beijing, GUCAS)
Fracture functions are parton distributions of a hadron in the presence of an almost collinear particle observed in the final state. They are important ingredients in QCD factorization for processes where a particle is produced diffractively. [...]
2019 - 6 p. - Published in : PoS DIS2019 (2019) 008 Fulltext: PDF;
In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019, pp.008

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2019-11-12
06:10
Nuclear matter effects in pion-induced Drell-Yan process at COMPASS / Mitrofanov, Evgenii (Dubna, JINR) /COMPASS
Cold nuclear matter effects such as parton energy loss and modifications of parton distribution functions in the DrellYan process in $\pi A$ and $pA$ collisions have been extensively studied during the last 30 years. Various theoretical models have been proposed to explain these effects, but a complete understanding is still lacking. [...]
2019 - 6 p. - Published in : AIP Conf. Proc. 2163 (2019) 030012
In : The XXIII International Scientific Conference of Young Scientists and Specialists, Dubna, Russia, 15 - 19 Apr 2019, pp.030012

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2019-11-12
06:10
Performance of the ALICE charged-particle veto detector in Pb-Pb and pp collisions at the LHC / Kondratyuk, Evgeny (Serpukhov, IHEP) /ALICE
The charged-particle veto (CPV) detector of the ALICE experiment is a multi-wire proportional chamber with pad readout. It is designed to improve photon identification in the photon spectrometer PHOS. [...]
2019 - 6 p. - Published in : AIP Conf. Proc. 2163 (2019) 030007
In : The XXIII International Scientific Conference of Young Scientists and Specialists, Dubna, Russia, 15 - 19 Apr 2019, pp.030007

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2019-11-12
06:10
Porting the LHCb Stack from x86 (Intel) to aarch64 (ARM) and ppc64le (PowerPC) / Promberger, Laura (Hochschule, Eng. Econ., Karlsruhe) ; Clemencic, Marco (CERN) ; Couturier, Ben (CERN) ; Iartza, Aritz Brosa (U. Oviedo (main)) ; Neufeld, Niko (CERN) /LHCb
LHCb is undergoing major changes in its data selection and processing chain for the upcoming LHC Run 3 starting in 2021. With this in sight several initiatives have been launched to optimise the software stack. [...]
2019 - 7 p. - Published in : EPJ Web Conf. 214 (2019) 05016 Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.05016

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2019-11-12
06:10
Improvements to the LHCb software performance testing infrastructure using message queues and big data technologies / Szymański, Maciej (Beijing, GUCAS ; CERN) ; Couturier, Ben (CERN) /LHCb
Software is an essential component of High Energy Physics experiments. Due to the fact that it is upgraded on relatively short timescales, software provides flexibility, but at the same time is susceptible to issues introduced during development process, thus mandating systematic testing. [...]
2019 - 7 p. - Published in : EPJ Web Conf. 214 (2019) 05014 Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.05014

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2019-11-12
06:10
Evolution of the ALICE software framework for Run 3 / Eulisse, Giulio (CERN) ; Konopka, Piotr (AGH-UST, Cracow ; CERN) ; Krzewicki, Mikolaj (Frankfurt U., FIAS ; Goethe U., Frankfurt (main)) ; Richter, Matthias (U. Oslo (main)) ; Rohr, David (CERN) ; Wenzel, Sandro (CERN)
ALICE is one of the four major LHC experiments at CERN. When the accelerator enters the Run 3 data-taking period, starting in 2021, ALICE expects almost 100 times more Pb-Pb central collisions than now, resulting in a large increase of data throughput. [...]
2019 - 7 p. - Published in : EPJ Web Conf. 214 (2019) 05010 Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.05010

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2019-11-12
06:10
Testing of complex, large-scale distributed storage systems: a CERN disk storage case study / Makai, Jozsef (CERN) ; Peters, Andreas Joachim (CERN) ; Bitzes, Georgios (CERN) ; Sindrilaru, Elvin Alin (CERN) ; Simon, Michal Kamil (CERN) ; Manzi, Andrea (CERN)
Complex, large-scale distributed systems are frequently used to solve extraordinary computing, storage and other problems. However, the development of these systems usually requires working with several software components, maintaining and improving a large codebase and also providing a collaborative environment for many developers working together. [...]
2019 - 7 p. - Published in : EPJ Web Conf. 214 (2019) 05008 Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.05008

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2019-11-12
06:10
A Python upgrade to the GooFit package for parallel fitting / Schreiner, Henry (Cincinnati U., RWC) ; Pandey, Himadri (Cincinnati U., RWC) ; Sokoloff, Michael D (Cincinnati U., RWC) ; Hittle, Bradley (OSC, Columbus) ; Tomko, Karen (OSC, Columbus) ; Hasse, Christoph (CERN ; Tech. U., Dortmund (main))
The GooFit highly parallel fitting package for GPUs and CPUs has been substantially upgraded in the past year. Python bindings have been added to allow simple access to the fitting configuration, setup, and execution. [...]
2019 - 7 p. - Published in : EPJ Web Conf. 214 (2019) 05006 Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.05006

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2019-11-12
06:10
Software packaging and distribution for LHCb using Nix / Burr, Chris (U. Manchester (main)) ; Clemencic, Marco (CERN) ; Couturier, Ben (CERN) /LHCb
Software is an essential and rapidly evolving component of modern high energy physics research. The ability to be agile and take advantage of new and updated packages from the wider data science community is allowing physicists to efficiently utilise the data available to them. [...]
2019 - 8 p. - Published in : EPJ Web Conf. 214 (2019) 05005 Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.05005

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2019-11-12
06:10
Geant-val: a web application for validation of detector simulations / Freyermuth, Luc (EISTI, Cergy) ; Konstantinov, Dmitri (CERN ; Serpukhov, IHEP) ; Latyshev, Grigorii (Serpukhov, IHEP) ; Razumov, Ivan (Serpukhov, IHEP ; CERN) ; Pokorski, Witold (CERN) ; Ribon, Alberto (CERN)
One of the key factors for the successful development of Monte-Carlo programs for physics simulations is to properly organize regression testing and validation. Geant4, the world-standard toolkit for HEP detector simulation, heavily relies on this activity. [...]
2019 - 6 p. - Published in : EPJ Web Conf. 214 (2019) 05002 Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.05002

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