COMPOUND MULTIPLICITY DISTRIBUTION IN NUCLEUS-NUCLEUS INTERACTIONS -PHASE TRANSITION STUDY

[摘要] Experimental data on compound multiplicity distribution produced in ²⁴Mg-AgBrand ¹²C-AgBr interactions, both at 4.5A GeV, have been analysed in terms ofscaled factorial moments. We have calculated the values of generalized dimension D_qfor q=2,3,4,5,6 and 7 with the help of intermittency exponent a_q.From the knowledge of D_q, the multifractal specific heat is calculated fordifferent multiplicity bin ranges. The parameter l_q(l_q=(a_q +1)/q)is calculated from a_q to look for possiblenon-thermal phase transition. The analysis reveals no evidence of non-thermal phasetransition. Instead, different specific heat in different multiplicity bins has beenobserved.

[学科分类] 物理（综合）

[关键词] 24Mg-AgBr and 12C-AgBr interactions;compoundmultiplicity distribution;scaled factorial moments;search for non-thermal phasetransition;multifractal specific heat