Europhys. Lett.
Volume 69, Number 2, January 2005
Page(s) 193 - 199
Section Nuclear physics
Published online 22 December 2004
Europhys. Lett., 69 (2), pp. 193-199 (2005)
DOI: 10.1209/epl/i2004-10339-6

Evidence of correlation between void probability and fractality of medium-energy protons in relativistic nuclear collisions

Dipak Ghosh, Argha Deb, Ishita Sen (Datta), Rinku Sarkar and Keya Chattopadhaya (Datta)

Nuclear and Particle Physics Research Centre, Department of Physics Jadavpur University - Kolkata 700032, India

received 4 February 2004; accepted in final form 15 November 2004
published online 22 December 2004

This paper presents a study of void probability scaling of medium-energy target protons emitted in $\chem{{}^{24}Mg}$- $\chem{AgBr}$ interaction at 4.5  AGeV in terms of their emission angle $(\theta)$. The scaling is best revealed in the phase space region for which $\cos\theta=-0.3$ to $\cos\theta=0.7$ and does not hold good for the total region of phase space. Fractal study reveals an interesting observation. A multifractal nature of the particle spectra has been observed in whole phase space whereas monofractal proton emission is evident in the phase space where the void probability scaling is valid.

24.60.Ky - Fluctuation phenomena.
25.75.-q - Relativistic heavy-ion collisions.

© EDP Sciences 2005