Original scientific paper

Compound multiplicity distribution in nucleus-nucleus interactions - phase transition study

Dipak Ghosh ; Nuclear and Particle Physics Research Centre, Department of Physics, Jadavpur University, Kolkata - 700 032, India
Argha Deb ; Nuclear and Particle Physics Research Centre, Department of Physics, Jadavpur University, Kolkata - 700 032, India
Subrata Biswas ; Nuclear and Particle Physics Research Centre, Department of Physics, Jadavpur University, Kolkata - 700 032, India
Pasupati Mandal ; Nuclear and Particle Physics Research Centre, Department of Physics, Jadavpur University, Kolkata - 700 032, India
Prabir Kumar Haldar ; Nuclear and Particle Physics Research Centre, Department of Physics, Jadavpur University, Kolkata - 700 032, India

Abstract

Experimental data on compound multiplicity distribution produced in 24Mg-AgBr and 12C-AgBr interactions, both at 4.5A GeV, have been analysed in terms of scaled factorial moments. We have calculated the values of generalized dimension Dq for q = 2, 3, 4, 5, 6 and 7 with the help of intermittency exponent αq. From the knowledge of Dq, the multifractal specific heat is calculated for different multiplicity bin ranges. The parameter λq (λq = (αq + 1)/q) is calculated from αq to look for possible non-thermal phase transition. The analysis reveals no evidence of nonthermal phase transition. Instead, different specific heat in different multiplicity bins has been observed.

Keywords

24Mg-AgBr and 12C-AgBr interactions; compound multiplicity distribution; scaled factorial moments; search for non-thermal phase transition; multifractal specific heat

Hrčak ID:

304145

URI

https://hrcak.srce.hr/304145

Publication date:

1.8.2005.

Article data in other languages: croatian

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