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      Kinetic freeze-out temperatures in central and peripheral collisions: which one is larger?

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      Nuclear Science and Techniques
      Springer Nature

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          Thermal phenomenology of hadrons from 200 AGeV S+S collisions

          We develop a complete and consistent description for the hadron spectra from heavy ion collisions in terms of a few collective variables, in particular temperature, longitudinal and transverse flow. To achieve a meaningful comparison with presently available data, we also include the resonance decays into our picture. To disentangle the influences of transverse flow and resonance decays in the \(m_T\)-spectra, we analyse in detail the shape of the \(m_T\)-spectra.
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            Transverse momentum spectra for charged particles at the CERN proton-antiproton collider

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              Centrality dependence of \(\rm \mathbf \pi\), K, p production in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 2.76 TeV

              In this paper measurements are presented of \(\rm \pi\)\(^+\(, \)\rm \pi\(\)^-\(, K\)^+\(, K\)^-\(, p and \)\overline{\rm p}\( production at mid-rapidity < 0.5, in Pb-Pb collisions at \)\sqrt{s_{\rm NN}} = 2.76\( TeV as a function of centrality. The measurement covers the transverse momentum (\)p_{\rm T}\() range from 100, 200, 300 MeV/\)c\( up to 3, 3, 4.6 GeV/\)c\(, for \)\rm\pi\(, K, and p respectively. The measured \)p_{\rm T}\( distributions and yields are compared to expectations based on hydrodynamic, thermal and recombination models. The spectral shapes of central collisions show a stronger radial flow than measured at lower energies, which can be described in hydrodynamic models. In peripheral collisions, the \)p_{\rm T}\) distributions are not well reproduced by hydrodynamic models. Ratios of integrated particle yields are found to be nearly independent of centrality. The yield of protons normalized to pions is a factor ~1.5 lower than the expectation from thermal models.
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                Author and article information

                Journal
                Nuclear Science and Techniques
                NUCL SCI TECH
                Springer Nature
                1001-8042
                2210-3147
                June 2018
                April 26 2018
                June 2018
                : 29
                : 6
                Article
                10.1007/s41365-018-0425-x
                134310fe-7b70-47b6-95ca-b1597ccc7b25
                © 2018

                http://www.springer.com/tdm

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