首页|Analysis of transverse momentum spectra of protons,deuterons,and tritons in symmetric heavy-ion collisions at √S NN=200 GeV at the RHIC
Analysis of transverse momentum spectra of protons,deuterons,and tritons in symmetric heavy-ion collisions at √S NN=200 GeV at the RHIC
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Analysis of transverse momentum spectra of protons,deuterons,and tritons in symmetric heavy-ion collisions at √S NN=200 GeV at the RHIC
The blast wave model with Tsallis statistics is used to analyze the transverse momentum spectra of pro-tons(p),deuterons(d),and tritons(t)in√S NN=200 GeV gold-gold(Au-Au)collisions at the RHIC in various cent-rality bins.In particular transverse momentum ranges,the model results closely match experimental data from the PHENIX(p)and STAR(d and t)collaborations.The data are compared with those of protons obtained in Cu+Cu collisions and deuterons and tritons in Ru+Ru collisions at a center of mass energy of 200 GeV from the STAR col-laboration.Particle spectra are used to derive the kinetic freeze-out temperatures,transverse flow velocities,and freeze-out volumes.According to the findings,the kinetic freeze-out temperature increases from the central to peri-pheral collisions.In this transition,the transverse flow velocity and freeze-out volume both decrease.For the colli-sions of both collaborations,this study reveals mass-dependent kinetic freeze-out temperature and differential volume possibilities.Overall,the non-extensivity parameter q decreases with increasing centrality of the studied heavy-ion collisions,and heavier mass particles have smaller values of q,which implies higher degrees of thermaliz-ation and equilibrium in more central collisions and for heavier particles.
NETL
NSTL
万方数据
