Self-affinity and phase transition study in target fragmentation of $\chem{{}^{28}Si}$-$\chem{AgBr}$ interactions at $14.5$$\un{\acro{\textit{A}}GeV}$

D. Ghosh; A. Deb; S. Bhattacharyya; J. Ghosh

doi:doi:10.1209/epl/i2003-00497-y

DOI: 10.1209/epl/i2003-00497-y
Europhys. Lett., 63 (6) , pp. 805-811 (2003)

Self-affinity and phase transition study in target fragmentation of $\chem{{}^{28}Si}$ - $\chem{AgBr}$ interactions at 14.5 $\un{\acro{\textit{A}}GeV}$

D. Ghosh, A. Deb, S. Bhattacharyya and J. Ghosh

Nuclear and Particle Physics Research Centre, Department of Physics Jadavpur University - Kolkata 700 032, India

(Received 3 February 2003; accepted in final form 11 July 2003)

Abstract
This paper reports the first evidence of non-thermal phase transition in the target fragmentation of $\chem{{}^{28}Si}$ - $\chem{AgBr}$ interactions at 14.5 $\un{\textit{A}GeV}$ . Factorial moment analysis has been performed in two dimensions taking into consideration the anisotropicity of the phase space. A signal of non-thermal phase transition is obtained by carrying out the investigation at that partitioning of phase space where the anisotropic scaling (self-affinity) behavior of dynamical fluctuation is best revealed. A signal of multifractality is also observed from the knowledge of anomalous fractal dimension d_q extracted from the intermittency exponent $\alpha_q$ at the anisotropic phase space scenario.

PACS
25.75.-q - Relativistic heavy-ion collisions.
25.70.Mn - Projectile and target fragmentation.
24.60.Ky - Fluctuation phenomena.

© EDP Sciences 2003

Self-affinity and phase transition study in target fragmentation of - interactions at 14.5

Self-affinity and phase transition study in target fragmentation of $\chem{{}^{28}Si}$ - $\chem{AgBr}$ interactions at 14.5 $\un{\acro{\textit{A}}GeV}$