200A GeV硫打原子核反应中奇异压低的约化和奇异反重子产生

用事件产生器LUCIAE分析了200AGeV硫打原子核反应中p和Λ产额?横动量分布以及Λ/p比值的NA35数据,结果表明:NA35数据反映了极端相对论性核一核碰撞中青异压低与同能量的核子-核子碰撞相比有约化的现象;但是核-核碰撞中Λ/p比值趋向1,并不必然意味着夸克的味对称性.

Reduction of Strangeness Suppression and Strange Antibaryon Production in Sulphur-Nucleus Collisions at 200A GeV

We use the event generator LUCIAE to analyse NA35 data of the p and A yields, the transverse mass distributions and the ratio A / p in pp and central sulphur-nucleus collisions at 200A GeV. The results seem to indicate that NA35 data might imply the reduction of strangeness suppression in ultrarelativistic nucleus-nucleus collisions comparing to the nucleon-nucleon collision at the same energy. However, the ratio A/ p approaching to unity in AA collisions comparing to pp collision does not necessarily mean quark flavor symmetry.