Helium-3 production from Pb+Pb collisions at SPS energies with the UrQMD model and the traditional coalescence afterburner

作者: YongJia Wang , CaiWan Shen , XiaoBao Wang , QingFeng Li

DOI: 10.1007/S11433-015-5775-3

关键词: AfterburnerYield (chemistry)Nuclear physicsHelium-3NucleonParticle physicsPhysicsNuclear theoryCoalescence (physics)Rapidity

摘要: A potential version of the UrQMD (UrQMD/M) transport model and a traditional coalescence are combined to calculate production 3He fragments in central Pb+Pb collisions at SPS energies 20-80 GeV/nucleon. It is found that Lorentz transformation afterburner influences visibly yield should be considered calculations. The rapidity distribution multiplicities (including concave shape) can described well with UrQMD/M when it stops during tcut=(100±25) fm/c one parameter set (R0,P0)=(3.8 fm, 0.3 GeV/c) taken into use afterwards.

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