5 research outputs found

    Particle Production in p-p and Heavy Ion Collisions at Ultrarelativistic Energies

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    Recent results related to the chemical equilibration of hadrons in the final state of p-p and heavy ion collisions are reviewed.Comment: 13 pages, 11 figures, Kruger2010: Workshop on Discovery Physics at the LHC, December 5 - 10 2010 Kruger National Park, South Afric

    Production of nuclei and antinuclei in pp and Pb-Pb collisions with ALICE at the LHC

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    We present first results on the production of nuclei and antinuclei such as (anti)deuterons, (anti)tritons, (anti)3He and (anti)4He in pp collisions at \s = 7 TeV and Pb-Pb collisions at \sNN = 2.76 TeV. These particles are identified using their energy loss (dE/dx) information in the Time Projection Chamber of the ALICE experiment. The Inner Tracking System gives a precise determination of the event vertex, by which primary and secondary particles are separated. The high statistics of over 360 million events for pp and 16 million events for Pb-Pb collisions give a significant number of light nuclei and antinuclei (Pb-Pb collisions: \sim30,000 anti-deuterons(dˉ\bar{d}) and \sim4 anti-alpha(4Heˉ\bar{^4He})). The predictions of various particle ratios from the THERMUS model is also discussed.Comment: 4 pages, 5 figures, parallel talk at Quark Matter 2011, May 23rd-28th 2011, Annecy, Franc

    Antimatter production in proton-proton and heavy-ion collisions at ultrarelativistic energies

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    One of the striking features of particle production at high beam energies is the near equal abundance of matter and antimatter in the central rapidity region. In this paper we study how this symmetry is reached as the beam energy is increased. In particular, we quantify explicitly the energy dependence of the approach to matter/antimatter symmetry in proton-proton and in heavy-ion collisions. Expectations are presented also for the production of more complex forms of antimatter like antihypernuclei.Comment: 7 pages, 5 figure

    ALICE Technical Design Report on Forward Detectors : FMD, T0 and V0

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    ALICE PHASE EI SEP ACC S2

    ALICE Technical Design Report of the Computing

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    ALICE, EI PHASE SE
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