First proton–proton collisions at the LHC as observed with the ALICE detector
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- Published on 14 December 2009
On 23rd November 2009, during the early commissioning of the CERN Large Hadron Collider (LHC), two counter-rotating proton bunches were circulated for the first time concurrently in the machine, at the LHC injection energy of 450 GeV per beam, allowing all LHC experiments to report first collision candidates.
284 such candidates were recorded by the ALICE experiment, allowing the events to be immediately reconstructed and analyzed. The results obtained by measuring the spatial distribution (specifically, the pseudorapidity density) of charged primary particles in the central region, were found to be consistent with previous measurements in proton-antiproton interactions at the same centre-of-mass energy at the CERN SppS collider (UA5 Collaboration, G.J. Alner et al., Z Phys. C 33 (1986), DOI 10.1007/BF01410446).
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J Schukraft, the ALICE spokesman, said: This important benchmark test illustrates also the excellent functioning and rapid progress of the LHC accelerator, and of both the hardware and software of the ALICE experiment, in this early start-up phase.
The paper is published open access on SpringerLink.com and distributed under the Creative Commons Attribution Noncommercial License.
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EPJ C further extends OA publishing scheme
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- Published on 06 October 2008
Following the completion of the first period (2007-2008) of its OA publishing scheme, and in anticipation of successful negotiations with interested Open Access funding agencies in the future, the "open access" publishing fees for all experimental papers submitted to and accepted for publication by The European Physical Journal C - Particles and Fields will continue to be waived. The paper categories concerned are both regular articles and scientific notes, on experimental physics. Independently, all Letters continue to be published "open access" by default, without any fees being incurred by the authors.
EPJ C appoints new theory Editor-in-Chief
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- Published on 01 September 2008
Prof. Georg Weiglein (University of Durham, UK) has been appointed the new Editor-in-Chief for theoretical particle and high-energy physics of The European Physical Journal (EPJ) C. He leads the journal into the hot phase of LHC physics and works together with Prof. Siegfried Bethke (MPI Munich, Germany), Editor-in-Chief for experimental physics. Georg Weiglein succeeds Jochen Bartels (University of Hamburg, Germany), who had been the journal's theory Editor-in-Chief since 1999. Jochen Bartels and Dieter Haidt (DESY, Hamburg) together successfully shaped the profile of EPJC, after the merger of the famous journals Zeitschrift für Physik C and Il Nuovo Cimento A, back in 1998.
EPJ C extends OA publishing scheme
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- Published on 01 November 2007
In anticipation of successful negotiations with interested Open Access funding agencies, as of today and until such negotiations have taken place before or by the end of 2008, all experimental papers submitted to and accepted by The European Physical Journal C - Particles and Fields will be published with full, online open access without any fees being incurred by the authors.
