Levy stable law of intermittency and multifractal spectrum in 28Si-AgBr collisions at 14.6Â AGeV

The scaled factorial moments Fq are studied for 28Si-AgBr collisions at 14.6 AGeV. These moments follow the generalized power law 〈Fq(M)〉∝[g(M)]ϕq. The values of ϕq/ϕ2 obtained from the linear fits of ln 〈Fq〉 versus ln 〈F2〉 graphs are found to obey the Brax-Peschanski formula with Levy index μ = 1.635 ± 0.012 for η space and μ = 1.801 ± 0.003 for ϕ space. These values lie within the Levy stable region 0 ⩽ μ ⩽ 2. An analytical continuation of the Brax-Peschanski formula has been used to obtain the multifractal spectra f(αq) in negative q region.