کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5488147 | 1524073 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Some observations on Levy stability and intermittency in nucleus-nucleus interactions at SPS energies
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک اتمی و مولکولی و اپتیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The power law relation between higher order and second order scaled factorial moments is studied in one dimensional pseudo-rapidity phase (η) space in the interactions of 32S beam with CNO, AgBr and Emulsion at incident energy of 200 AGeV. Observation for such a power law may indicate a self similar cascade mechanism in multiparticle production process. The values of slope, βq are found to be independent of target size. The value of the scaling exponent Ï
â=â1.412 obtained is higher than the critical value Ï
â=â1.304, indicating that no second order phase transition exists in our data. The ratio of anomalous fractal dimensions, dq/d2 is found to increase with increase in the order of moments, q. The dependence of dq/d2 on q indicates a multifractal structure and the presence of self-similar cascading mechanism in our data. The dq/d2 values are well described by the Levy-stable distribution with Levy index μâ=â1.562 which is consistent with and lies within the Levy stable region (0ââ¤âμââ¤â2). The multifractal spectrum is concave downward with a maximum at qâ=â0. The decrease in Dq with increasing q shows that there is a self affine multifractal behaviour in multiparticle production in our data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Physics - Volume 55, Issue 2, April 2017, Pages 260-267
Journal: Chinese Journal of Physics - Volume 55, Issue 2, April 2017, Pages 260-267
نویسندگان
Mir Hashim Rasool, Shafiq Ahmad,