Abstract
The kinetic freeze-out temperatures, \(T_0\), in nucleus–nucleus collisions at the Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies are extracted by four methods: (1) the Blast-Wave model with Boltzmann–Gibbs statistics (the BGBW model), (2) the Blast-Wave model with Tsallis statistics (the TBW model), (3) the Tsallis distribution with flow effect (the improved Tsallis distribution), and (4) the intercept in \(T=T_0+am_0\) (the alternative method), where \(m_0\) denotes the rest mass and T denotes the effective temperature which can be obtained by different distribution functions. It is found that the relative sizes of \(T_0\) in central and peripheral collisions obtained by the conventional BGBW model which uses a zero or nearly zero transverse flow velocity, \(\beta _{\text{T}}\), are contradictory in tendency with other methods. With a re-examination for \(\beta _{\text{T}}\) in the first method, in which \(\beta _{\text{T}}\) is taken to be \(\sim (0.40\pm 0.07)c\), a recalculation presents a consistent result with others. Finally, our results show that the kinetic freeze-out temperature in central collisions is larger than that in peripheral collisions.
Similar content being viewed by others
References
N. Xu, (for the STAR Collaboration), An overview of STAR experimental results. Nucl. Phys. A 931, 1 (2014). https://doi.org/10.1016/j.nuclphysa.2014.10.022
S. Chatterjee, S. Das, L. Kumar et al., Freeze-out parameters in heavy-ion collisions at AGS, SPS, RHIC, and LHC energies. Adv. High Energy Phys. 2015, 349013 (2015). https://doi.org/10.1155/2015/349013
S. Chatterjee, B. Mohanty, R. Singh, Freezeout hypersurface at energies available at the CERN Large Hadron Collider from particle spectra: Flavor and centrality dependence. Phys. Rev. C 92, 024917 (2015). https://doi.org/10.1103/PhysRevC.92.024917
S. Chatterjee, B. Mohanty, Production of light nuclei in heavy-ion collisions within a multiple-freezeout scenario. Phys. Rev. C 90, 034908 (2014). https://doi.org/10.1103/PhysRevC.90.034908
S.S. Räsänen, (for the ALICE Collaboration). ALICE overview. EPJ Web Conf. 126, 02026 (2016) https://doi.org/10.1051/epjconf/201612602026
M. Floris, Hadron yields and the phase diagram of strongly interacting matter. Nucl. Phys. A 931, 103 (2014). https://doi.org/10.1016/j.nuclphysa.2014.09.002
S. Das, D. Mishra, S. Chatterjee et al., Freeze-out conditions in proton-proton collisions at the highest energies available at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider. Phys. Rev. C 95, 014912 (2017). https://doi.org/10.1103/PhysRevC.95.014912
P. Huovinen, Chemical freeze-out temperature in the hydrodynamical description of Au+Au collisions at \(\sqrt{s_{NN}}=\) 200 GeV. Eur. Phys. J. A 37, 121 (2008). https://doi.org/10.1140/epja/i2007-10611-3
B. De, Non-extensive statistics and understanding particle production and kinetic freeze-out process from \(p_T\)-spectra at 2.76 TeV. Eur. Phys. J. A 50, 138 (2014). https://doi.org/10.1140/epja/i2014-14138-2
A. Andronic, An overview of the experimental study of quark-gluon matter in high-energy nucleus-nucleus collisions. Int. J. Mod. Phys. A 29, 1430047 (2014). https://doi.org/10.1142/S0217751X14300476
E. Schnedermann, J. Sollfrank, U. Heinz, Thermal phenomenology of hadrons from \(200A\) GeV S+S collisions. Phys. Rev. C 48, 2462 (1993). https://doi.org/10.1103/PhysRevC.48.2462
B.I. Abelev et al., (STAR Collaboration), Systematic measurements of identified particle spectra in pp, d+Au, and Au+Au collisions at the STAR detector. Phys. Rev. C 79, 034909 (2009). https://doi.org/10.1103/PhysRevC.79.034909
B.I. Abelev et al., (STAR Collaboration), Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at \(\sqrt{s_{NN}}=\) 9.2 GeV. Phys. Rev. C 81, 024911 (2010). https://doi.org/10.1103/PhysRevC.81.024911
Z.B. Tang, Y.C. Xu, L.J. Ruan et al., Spectra and radial flow in relativistic heavy ion collisions with Tsallis statistics in a blast-wave description. Phys. Rev. C 79, 051901(R) (2009). https://doi.org/10.1103/PhysRevC.79.051901
T. Bhattacharyya, J. Cleymans, A. Khuntia et al., Radial flow in non-extensive thermodynamics and study of particle spectra at LHC in the limit of small (\(q-1\)). Eur. Phys. J. A 52, 30 (2016). https://doi.org/10.1140/epja/i2016-16030-5
D. Thakur, S. Tripathy, P. Garg et al., Indication of a differential freeze-out in proton-proton and heavy-ion collisions at RHIC and LHC energies. Adv. High Energy Phys. 2016, 4149352 (2016). https://doi.org/10.1155/2016/4149352
S. Takeuchi, K. Murase, T. Hirano, P. Huovinen, Y. Nara, Effects of hadronic rescattering on multistrange hadrons in high-energy nuclear collisions. Phys. Rev. C 92, 044907 (2015). https://doi.org/10.1103/PhysRevC.92.044907
H. Heiselberg, A.-M. Levy, Elliptic flow and Hanbury–Brown–Twiss correlations in noncentral nuclear collisions. Phys. Rev. C 59, 2716 (1999). https://doi.org/10.1103/PhysRevC.59.2716
U.W. Heinz, Lecture Notes for lectures presented at the 2nd CERN–Latin-American School of High-Energy Physics, June 1–14, 2003, San Miguel Regla, Mexico (2004), arXiv:hep-ph/0407360
R. Russo, Measurement of \(D^+\) meson production in p-Pb collisions with the ALICE detector, Ph.D. Thesis, Universita degli Studi di Torino, Italy (2015), arXiv:1511.04380 [nucl-ex]
F.-H. Liu, Y.-Q. Gao, H.-R. Wei, On descriptions of particle transverse momentum spectra in high energy collisions. Adv. High Energy Phys. 2014, 293873 (2014). https://doi.org/10.1155/2014/293873
H.-R. Wei, F.-H. Liu, R.A. Lacey, Kinetic freeze-out temperature and flow velocity extracted from transverse momentum spectra of final-state light flavor particles produced in collisions at RHIC and LHC. Eur. Phys. J. A 52, 102 (2016). https://doi.org/10.1140/epja/i2016-16102-6
H.-L. Lao, H.-R. Wei, F.-H. Liu et al., An evidence of mass-dependent differential kinetic freeze-out scenario observed in Pb-Pb collisions at 2.76 TeV. Eur. Phys. J. A 52, 203 (2016). https://doi.org/10.1140/epja/i2016-16203-2
H.-R. Wei, F.-H. Liu, R.A. Lacey, Disentangling random thermal motion of particles and collective expansion of source from transverse momentum spectra in high energy collisions. J. Phys. G 43, 125102 (2016). https://doi.org/10.1088/0954-3899/43/12/125102
S.S. Adler et al., (PHENIX Collaboration), Identified charged particle spectra and yields in Au+Au collisions at \(\sqrt{s_{NN}}= 200\) GeV. Phys. Rev. C 69, 034909 (2004). https://doi.org/10.1103/PhysRevC.69.034909
B.I. Abelev et al., (STAR Collaboration), Identified baryon and meson distributions at large transverse momenta from Au+Au collisions at \(\sqrt{s_{NN}}= 200\) GeV. Phys. Rev. Lett. 97, 152301 (2006). https://doi.org/10.1103/PhysRevLett.97.152301
G. Agakishiev et al., (STAR Collaboration), Identified hadron compositions in \(p+p\) and Au+Au collisions at high transverse momenta at \(\sqrt{s_{NN}}= 200\) GeV. Phys. Rev. Lett. 108, 072302 (2012). https://doi.org/10.1103/PhysRevLett.108.072302
B. Abelev et al., (ALICE Collaboration), Centrality dependence of \(\pi \), \(K\), and \(p\) in Pb-Pb collisions at \(\sqrt{s_{NN}}= 2.76\) TeV. Phys. Rev. C 88, 044910 (2013). https://doi.org/10.1103/PhysRevC.88.044910
J. Adam et al., (ALICE Collaboration), Centrality dependence of the nuclear modification factor of charged pions, kaons, and protons in Pb-Pb collisions at \(\sqrt{s_{NN}}= 2.76\) TeV. Phys. Rev. C 93, 034913 (2016). https://doi.org/10.1103/PhysRevC.93.034913
E. Schnedermann, U. Heinz, Relativistic hydrodynamics in a global fashion. Phys. Rev. C 47, 1738 (1993). https://doi.org/10.1103/PhysRevC.47.1738
L. Kumar, (for the STAR Collaboration), Systematics of kinetic freeze-out properties in high energy collisions from STAR. Nucl. Phys. A 931, 1114 (2014). https://doi.org/10.1016/j.nuclphysa.2014.08.085
H. Zheng, L.L. Zhu, Comparing the Tsallis distribution with and without thermodynamical description in \(p+p\) collisions. Adv. High Energy Phys. 2016, 9632126 (2016). https://doi.org/10.1155/2016/9632126
J. Cleymans, D. Worku, Relativistic thermodynamics: Transverse momentum distributions in high-energy physics. Eur. Phys. J. A 48, 160 (2012). https://doi.org/10.1140/epja/i2012-12160-0
R. Odorico, Does a transverse energy trigger actually trigger on large-\(p_T\) jets? Phys. Lett. B 118, 151 (1982). https://doi.org/10.1016/0370-2693(82)90620-7
G. Arnison et al., (UA1 Collaboration), Transverse momentum spectra for charged particles at the CERN proton-antiproton collider. Phys. Lett. B 118, 167 (1982). https://doi.org/10.1016/0370-2693(82)90623-2
T. Mizoguchi, M. Biyajima, N. Suzuki, Analyses of whole transverse momentum distributions in \(p{\bar{p}}\) and \(pp\) collisions by using a modified version of Hagedorn’s formula. Int. J. Mod. Phys. A 32, 1750057 (2017). https://doi.org/10.1142/S0217751X17500579
H.-L. Lao, F.-H. Liu, R.A. Lacey, Extracting kinetic freeze-out temperature and radial flow velocity from an improved Tsallis distribution. Eur. Phys. J. A 53, 44 (2017). https://doi.org/10.1140/epja/i2017-12238-1; and Erratum. Eur. Phys. J. A 53, 143 (2017). https://doi.org/10.1140/epja/i2017-12333-3
F.-H. Liu, Y.-Q. Gao, B.-C. Li, Comparing two-Boltzmann distribution and Tsallis statistics of particle transverse momentums in collisions at LHC energies. Eur. Phys. J. A 50, 123 (2014). https://doi.org/10.1140/epja/i2014-14123-9
H. Zheng, L.L. Zhu, Can Tsallis distribution fit all the particle spectra produced at RHIC and LHC? Adv. High Energy Phys. 2015, 180491 (2015). https://doi.org/10.1155/2015/180491
H.C. Song, Y. Zhou, K. Gajdošová, Collective flow and hydrodynamics in large and small systems at the LHC. Nucl. Sci. Tech. 28, 99 (2017). https://doi.org/10.1007/s41365-017-0245-4
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was supported by the National Natural Science Foundation of China (Nos. 11575103 and 11747319), the Shanxi Provincial Natural Science Foundation (No. 201701D121005), and the Fund for Shanxi “1331 Project” Key Subjects Construction.
Rights and permissions
About this article
Cite this article
Lao, HL., Liu, FH., Li, BC. et al. Kinetic freeze-out temperatures in central and peripheral collisions: which one is larger?. NUCL SCI TECH 29, 82 (2018). https://doi.org/10.1007/s41365-018-0425-x
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/s41365-018-0425-x