Altas Energías

**EXTRAORDINARIO** (Notar día lugar y hora) Non-Extensive Thermodynamical Approach for Hadronization in High Energy Collisions

by Dr. Gergely Gabor Barnaföldi (Wigner Institute, Hungary))

Friday, 15 January 2016 from to (Mexico/General)
at ICN-UNAM ( Salon de seminarios B-302, 2o nivel edificio B )
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Avenida Universidad No. 3000, Col. UNAM-C.U. Distrito Federal, C.P. 04510, México
Description
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 ‘soft+hard’ 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].

[1] G.G. Barnaföldi, K. Ürmössy, G. Bíró: A ’soft+hard’ 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
Material:
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