Original scientific paper

Fluctuation of pions in relativistic and ultrarelativistic nuclear collisions-scale dependent or not?

Dipak Ghosh ; Nuclear and Particle Physics Research Centre, Department of Physics, Jadavpur University, Kolkata -700032, India
Argha Deb ; Nuclear and Particle Physics Research Centre, Department of Physics, Jadavpur University, Kolkata -700032, India
Srimonti Dutta ; Nuclear and Particle Physics Research Centre, Department of Physics, Jadavpur University, Kolkata -700032, India

Abstract

Fluctuation pattern of pions is investigated in a wide range of projectile energy from 4.5 AGeV (24Mg-AgBr interactions) to 200 AGeV (32S-AgBr interactions). Two-dimensional analysis is performed. To obtain the correct phase-space partition condition considering anisotropy of phase space, we use the concept of Hurst exponent H. The analysis is performed in a rigorous way by fitting one-dimensional factorial moment saturation curves. The effective fluctuation strength aeff is calculated. The study reveals that the fluctuation pattern is scale-dependent at both relativistic and ultrarelativistic energies.

Keywords

nuclear collisions; fluctuation; self-affinity; self-similarity; multi-particle production; scale dependence; phase-space dependence; effective fluctuation strength

Hrčak ID:

304461

URI

https://hrcak.srce.hr/304461

Publication date:

2.5.2007.

Article data in other languages: croatian

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