ON HADRON PRODUCTION FROM THE QUARK-GLUON PLASMA PHASE INULTRA-RELATIVISTIC HEAVY-ION COLLISIONS

Fizika B (Zagreb)

V. A. IVANOVA¹  V. M.SAMSONOV¹  N. I. TROITSKAYA¹  A. N.IVANOV¹  A. YA. BERDNIKOV¹  V. F. KOSMACH¹  YA. A. BERDNIKOV¹ 

关键词: heavy-ion collisions;    quark gluon plasma;    hadronization;    ratios ofmultiplicities;   

DOI  :  

学科分类：物理（综合）

来源: Fizika B: a journal of experimental and theoretical physics

【 摘 要 】

We describe the quark gluon plasma (QGP) as a thermalized quark-gluon system, thethermalized QGP phase of QCD. The hadronization of the thermalized QGP phase is given in away resembling a coalescence model with correlated quarks and antiquarks. The inputparameters of the approach are the spatial volumes of the hadronization. We introducethree dimensionless parameters, C_M, C_B and C<sub>`B</sub>,related to the spatial volumes of the production of low-lying mesons (M), baryons (B) andantibaryons ([`(B)]). We show thatat the temperature T = 175 MeV our predictions for theratios of multiplicities agree well with the presently available set of hadron ratiosmeasured for various experiments given by the NA44, NA49, NA50 and WA97 Collaborations onPb+Pb collisions at 158 GeV/nucleon, the NA35 Collaboration on S+S collisions and theNA38 Collaboration on O+U and S+U collisions at 200 GeV/nucleon.

【 授权许可】

Unknown