CERN Published Articles

Derniers ajouts:
2019-11-20
04:04
 Dynamical friction in slab geometries and accretion discs / Vicente, Rodrigo (Lisbon, CENTRA) ; Cardoso, Vitor (Lisbon, CENTRA ; CERN) ; Zilhão, Miguel (Lisbon, CENTRA) The evolution of planets, stars and even galaxies is driven, to a large extent, by dynamical friction of gravitational origin. There is now a good understanding of the friction produced by extended media, either collisionless of fluid-like. [...] arXiv:1905.06353.- 2019-11-11 - 12 p. - Published in : Mon. Not. R. Astron. Soc. 489 (2019) 5424-5435 Fulltext: PDF;

2019-11-20
04:02
 Quantum Field Theory and the Electroweak Standard Model / Bednyakov, Alexander (Dubna, JINR) These lecture notes cover the basics of Quantum Field Theory (QFT) and peculiarities in the construction of the Electroweak (EW) sector of the Standard Model (SM). In addition, the present status, issues, and prospects of the SM are discussed.. arXiv:1812.10675.- 2019 - 41 p. - Published in : CERN Yellow Rep. School Proc. 6 (2019) 1-41 Fulltext: PDF; In : The 2018 European School of High-Energy Physics, Maratea, Italy, 20 Jun - 3 Jul 2018, pp.1-41

2019-11-20
04:01
 Probing homogeneity with standard candles / Chiang, Hsu Wen (Taiwan, Natl. Taiwan U.) ; Romano, Antonio Enea (CERN ; Antioquia U. ; Bishop's U., Sherbrooke) ; Nugier, Fabien (Taiwan, Natl. Taiwan U.) ; Chen, Pisin (Taiwan, Natl. Taiwan U. ; KIPAC, Menlo Park) We show that standard candles can provide some valuable information about the density contrast, which could be particularly important at redshifts where other observations are not available. We use an inversion method to reconstruct the local radial density profile from luminosity distance observations assuming background cosmological parameters obtained from large scale observations. [...] arXiv:1706.09734.- 2019-11-14 - 47 p. - Published in : JCAP 1911 (2019) 016 Fulltext: PDF; Preprint: PDF;

2019-11-19
06:00
 Some Theoretical Aspects of Quantum Electrodynamics / Yennie, D R (Cornell U., LNS) In this talk I want to restrict myself to topics I think are of most immediate interest to experimentalists. While there is interesting work going on at a more fundamental level in quantum electrodynamics, at the present time this work seems to be mainly concerned with the internal properties and consistency of the subject and it does not seem to have any immediate relevance to experiment. [...] 1967 - 16 p. - Published in : , pp. 32-47 In : 3rd International Symposium on Electron and Photon Interactions at High Energies, SLAC, Stanford, CA, USA, 5 - 9 Sep 1967, pp.32-47

2019-11-19
06:00
 What Have We Learned About Elementary Particles from Photon and Electron Interactions? / Drell, S D (SLAC ; Stanford U.) In trying to write this report I find myself in limbo. I am announced as speaking on "What We Have Learned” at the Opening of this conference prior to the presentation of many new and more precise experimental results — and in particular before the disclosure of first results from SLAC at significantly higher energies and momentum transfers than heretofore available. [...] 1967 - 29 p. - Published in : , pp. 3-31 In : 3rd International Symposium on Electron and Photon Interactions at High Energies, SLAC, Stanford, CA, USA, 5 - 9 Sep 1967, pp.3-31

2019-11-19
06:00
 New approaches for track reconstruction in LHCb’s Vertex Locator / Albrecht, Johannes (Tech. U., Dortmund (main)) ; Bourgeois, Dylan (Ecole Polytechnique, Lausanne) ; Coco, Victor (CERN) ; Couturier, Ben (CERN) ; Hasse, Christoph (Tech. U., Dortmund (main) ; CERN) ; Nolte, Niklas (CERN ; Tech. U., Dortmund (main)) ; Ponce, Sebastien (CERN) /LHCb Starting with Upgrade 1 in 2021, LHCb will move to a purely software-based trigger system. Therefore, the new trigger strategy is to process events at the full rate of 30MHz. [...] 2019 - 8 p. - Published in : EPJ Web Conf. 214 (2019) 01042 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.01042

2019-11-19
06:00
 Readout software for the ALICE integrated Online-Offline (O$^2$) system / Chapeland, Sylvain (CERN) ; Costa, Filippo (CERN) /ALICE ALICE (A Large Ion Collider Experiment) is a heavy-ion detector studying the physics of strongly interacting matter and the quark - gluon plasma at CERN’s LHC (Large Hadron Collider). During the second long shutdown of the LHC, the ALICE detector will be upgraded to cope with an interaction rate of 50 kHz in Pb–Pb collisions, producing in the online computing system (O$^2$) a sustained input throughput of 3 TB/s. [...] 2019 - 7 p. - Published in : EPJ Web Conf. 214 (2019) 01041 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.01041

2019-11-19
06:00
 Data handling in the ALICE O$^2$ event processing / Richter, Matthias (CERN ; Oslo U.) ; Krzewicki, Mikolaj (Frankfurt U., FIAS) ; Eulisse, Giulio (CERN) The ALICE experiment at the Large Hadron Collider (LHC) at CERN is planned to be operated in a continuous data-taking mode in Run 3. This will allow to inspect data from all Pb-Pb collisions at a rate of 50 kHz, giving access to rare physics signals embedded in a large background. [...] 2019 - 8 p. - Published in : EPJ Web Conf. 214 (2019) 01035 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.01035

2019-11-19
06:00
 Towards the ALICE Online-Offline (O$^2$) control system / Mrnjavac, Teo (CERN) ; Chibante Barroso, Vasco (CERN) The ALICE Experiment at CERN LHC (Large Hadron Collider) is under preparation for a major upgrade that is scheduled to be deployed during Long Shutdown 2 in 2019-2020 and that includes new computing systems, called O$^2$ (Online-Offline). To ensure the efficient operation of the upgraded experiment along with its newly designed computing system, a reliable, high performance and automated control system will be developed with the goal of managing the lifetime of all the O$^2$ processes, and of handling the various phases of the data taking activity by interacting with the detectors, the trigger system and the LHC. [...] 2019 - 8 p. - Published in : EPJ Web Conf. 214 (2019) 01033 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.01033

2019-11-19
06:00
 The ProtoDUNE Single Phase detector control system / Kehrli, Antoine (CERN) ; Lehmann Miotto, Giovanna (CERN) ; Pons, Xavier (CERN) ; Ravat, Sylvain (CERN) ; Rodriguez, Manuel J (CERN ; Madrid, CIEMAT) This paper presents the Detector Control System (DCS) that has been designed and implemented for the NP04 experiment at CERN. NP04, alsoknown as protoDUNE Single Phase (SP), aims at validating the engineering processes and detector performance of a large Liquid Argon (LAr) Time Projection Chamber (TPC) in view of the DUNE experiment. [...] 2019 - 8 p. - Published in : EPJ Web Conf. 214 (2019) 01024 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.01024