Power laws in elementary and heavy-ion collisions - A story of fluctuations and nonextensivity?

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Wilk, Grzegorz
Wlodarczyk, Zbigniew
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Abstract
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We review from the point of view of nonextensive statistics the ubiquitous presence in elementary and heavy-ion collisions of power-law distributions. Special emphasis is placed on the conjecture that this is just a reflection of some intrinsic fluctuations existing in the hadronic systems considered. These systems summarily described by a single parameter q playing the role of a nonextensivity measure in the nonextensive statistical models based on Tsallis entropy.
Comment: 14 pages, a minireview for EPJA topical issue
Keywords
High Energy Physics - Phenomenology, Nuclear Theory
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