Roland Brun

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We report on the first measurement of the triangular v3, quadrangular v4, and pentagonal v5 charged particle flow in Pb-Pb collisions at sqrt(s(NN)) = 2.76  TeV measured with the ALICE detector at the CERN Large Hadron Collider. We show that the triangular flow can be described in terms of the initial spatial anisotropy and its fluctuations, which provides(More)
Results on the energy dependence of charged pion and kaon production in central Pb+Pb collisions at 40, 80 and 158 A·GeV are presented and compared with data at lower and higher energies. The mean pion multiplicity increases approximately linearly with s 1/4 with a change of slope around 40 A·GeV. The change from pion suppression with respect to p+p(More)
Measurements of cross sections of inelastic and diffractive processes in proton–proton collisions at LHC energies were carried out with the ALICE detector. The fractions of diffractive processes in inelastic collisions were determined from a study of gaps in charged particle pseudora-pidity distributions: for single diffraction (diffractive mass
Differential cross sections of charged particles in inelastic pp collisions as a function of p T have been measured at √ s = 0.9, 2.76 and 7 TeV at the LHC. The p T spectra are compared to NLO-pQCD calculations. Though the differential cross section for an individual √ s cannot be described by NLO-pQCD, the relative increase of cross section with √ s is in(More)
The directed flow of charged particles at midrapidity is measured in Pb-Pb collisions at √(s(NN))=2.76 TeV relative to the collision symmetry plane defined by the spectator nucleons. A negative slope of the rapidity-odd directed flow component with approximately 3 times smaller magnitude than found at the highest RHIC energy is observed. This suggests a(More)
The ALICE measurement of K(S)(0) and Λ production at midrapidity in Pb-Pb collisions at √(s(NN))=2.76 TeV is presented. The transverse momentum (p(T)) spectra are shown for several collision centrality intervals and in the p(T) range from 0.4 GeV/c (0.6 GeV/c for Λ) to 12 GeV/c. The p(T) dependence of the Λ/K(S)(0) ratios exhibits maxima in the vicinity of(More)
A model for the description of nutrient, oxygen and plankton dynamics in Lake Z urich, Switzerland has recently been developed. Because with this model the attempt is made to mechanistically describe the most important mass uxes and conversion processes in the water column and sediment of the lake, it is already too complicated to allow all its parameters(More)
The ALICE Collaboration at the LHC has measured the J/ψ and ψ photoproduction at mid-rapidity in ultra-peripheral Pb–Pb collisions at √ s NN = 2.76 TeV. The charmonium is identified via its leptonic decay for events where the hadronic activity is required to be minimal. The analysis is based on an event sample corresponding to an integrated luminosity of(More)
Silicon on insulator (SOI) wafers have become today one of the standard substrate choices for high-end CMOS applications. Current quality of SOI wafers is approaching to the quality of high end bulk Si products. The manufacturing process requires monitoring of tens of parameters, both on-line during wafer processing and off-line on the finished product.(More)
The concept of Virtual Monte Carlo (VMC) has been developed by the ALICE Software Project to allow diierent Monte Carlo simulation programs to run without changing the user code, such as the geometry deenition, the detector response simulation or input and output formats. Recently, the VMC classes have been integrated into the ROOT framework, and the other(More)
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