"Non-Extensive Thermodynamical Approach for Hadronization in High
Energy Collisions"
Dr. Gergely Gábor Barnaföldi, Wigner Institute, Hungary
Hadron spectra measured in high-energy collisions present
distributions which can be derived from the non-extensive
statistical and thermodynamical phenomena. Based on earlier
theoretical developments, it seems, the methods are very
applicable for jets hadronization processes in electron-positron,
proton-proton, and even in heavy-ion collisions. Here, we present what
can we learned from the recent theoretical and
phenomenological developments: transverse momentum spectra
and azimuthal anisotropy (v2) of charge averaged pions and kaons
stemming from high-energy collisions form RHIC to LHC energies,
which are described analytically in a \u2018soft+hard\u2019 model. In this
model, we propose that hadron yields produced in heavy-ion
collisions are simply the sum of yields stemming from jets (hard
yields) in addition to the yields originating from the bulk or from the
Quark-Gluon Plasma (soft yields). The hadron spectra in both
types of yields are approximated by the Tsallis-Pareto like
distribution, and parameters q & T provided information on the
system's 'soft' and 'hard' components. See more in Ref. [1].
References:
[1] G.G. Barnaföldi, K. Ürmössy, G. Bíró: A \u2019soft+hard\u2019 model for
Pion, Kaon, and Proton Spectra and v2 measured in PbPb
Collisions at sqrt(s) = 2.76 ATeV, J.Phys.Conf.Ser. 612 (2015) 1,
012048, arXiv:1509.06195, 1501.05959, 1501.0235, 1405.3963