On thermodynamic self-consistency of generic axiomatic-nonextensive statistics

  • Generic axiomatic-nonextensive statistics introduces two asymptotic properties, to each of which a scaling function is assigned. The first and second scaling properties are characterized by the exponents c and d, respectively. In the thermodynamic limit, a grand-canonical ensemble can be formulated. The thermodynamic properties of a relativistic ideal gas of hadron resonances are studied, analytically. It is found that this generic statistics satisfies the requirements of the equilibrium thermodynamics. Essential aspects of the thermodynamic self-consistency are clarified. Analytical expressions are proposed for the statistical fits of various transverse momentum distributions measured in most-central collisions at different collision energies and colliding systems. Estimations for the freezeout temperature (Tch) and the baryon chemical potential (μb) and the exponents c and d are determined. The earlier are found compatible with the parameters deduced from Boltzmann-Gibbs (BG) statistics (extensive), while the latter refer to generic nonextensivities. The resulting equivalence class (c,d) is associated with stretched exponentials, where Lambert function reaches its asymptotic stability. In some measurements, the resulting nonextensive entropy is linearly composed on extensive entropies. Apart from power-scaling, the particle ratios and yields are excellent quantities to highlighting whether the particle production takes place (non)extensively. Various particle ratios and yields measured by the STAR experiment in central collisions at 200, 62.4 and 7.7 GeV are fitted with this novel approach. We found that both c and d<1, i.e. referring to neither BG- nor Tsallis-type statistics, but to (c,d)-entropy, where Lambert functions exponentially rise. The freezeout temperature and baryon chemical potential are found comparable with the ones deduced from BG statistics (extensive). We conclude that the particle production at STAR energies is likely a nonextensive process but not necessarily BG or Tsallis type.
      PCAS:
    • 05.70.Ln(Nonequilibrium and irreversible thermodynamics)
    • 05.70.Fh
    • 05.70.Ce(Thermodynamic functions and equations of state)
  • [1] A. N. Tawfik, Int. J. Mod. Phys. A, 29: 1430021 (2014)
    [2] A. Tawfik, J. Phys. G, 40: 055109 (2013)
    [3] R. Hagedorn, Nuovo Cimento Suppl., 3: 147 (1965)
    [4] A. Tawfik, J. Phys. G 40:055109 (2013)
    [5] R. Hagedorn, Nuovo Cimento Suppl. 3:147 (1965)
    [6] A. Tawfik, Prog. Theor. Phys., 126: 279 (2011)
    [7] A. Tawfik, Prog. Theor. Phys. 126:279 (2011)
    [8] C. Beck, Physica, A, 286: 164 (2000)
    [9] I. Bediaga, E. M. F. Curado, and J. M. de Miranda, Physica A, 286: 156 (2000)
    [10] C. Beck, Physica A 286:164 (2000)
    [11] W. M. Alberico, A. Lavagno, and P. Quarati, Eur. Phys. J. C, 12: 499-506 (2000)
    [12] I. Bediaga, E.M.F. Curado and J.M. de Miranda, Physica A 286:156 (2000)
    [13] W. M. Alberico, A. Lavagno, and P. Quarati, Eur. Phys. J. C 12:499-506 (2000)
    [14] S. Tripathy { et al.}, Eur. Phys. J. A, 52: 289 (2016)
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    [16] S. Tripathy, et al., Eur. Phys. J. A 52:289 (2016)
    [17] T. Bhattacharyya et al, Eur. Phys. J. A, 52: 30 (2016)
    [18] A. Khuntia, et al., Eur. Phys. J. A 52:292 (2016)
    [19] A. Deppman, J. Phys. G, 41: 055108 (2014)
    [20] T. Bhattacharyya, et al., Eur. Phys. J. A 52:30 (2016)
    [21] A. Deppman, J. Phys. G 41:055108 (2014)
    [22] W. M. Alberico et al, Physica A, 387: 467 (2008)
    [23] W. M. Alberico, et al., Physica A 387:467 (2008)
    [24] T. Bhattacharyya, R. Sahoo, and P. Samantray, Eur. Phys. J. A, 52: 283 (2016)
    [25] Q. A. Wong, Entropy, 5: 220 (2003).
    [26] T. Bhattacharyya, R. Sahoo, and P. Samantray, Eur. Phys. J. A 52:283 (2016)
    [27] Q. A. Wong, Entropy, 5:220 (2003).
    [28] A. N. Tawfik, Eur. Phys. J. A, 52: 253 (2016)
    [29] A. Bialas, Phys. Lett. B, 747: 190 (2015)
    [30] Abdel Nasser Tawfik, Eur. Phys. J. A 52:253 (2016)
    [31] G. Wilk and Z. Wlodarcyk, Phys. Lett. A, 379: 2941 (2015)
    [32] A. Bialas, Phys. Lett. B 747:190 (2015)
    [33] C. Beck and E. G. D. Cohen, Physica A, 322: 267 (2003)
    [34] G. Wilk and Z. Wlodarcyk, Phys. Lett. A 379:2941 (2015)
    [35] C. Beck and E. G. D. Cohen, Physica A 322:267 (2003)
    [36] F. Sattin, Eur. Phys. J. B, 49: 219 (2006)
    [37] F. Sattin, Eur. Phys. J. B 49:219 (2006)
    [38] B. I. Abelev et al (STAR Collaboration), Phys. Rev. C, 75: 064901 (2007)
    [39] B. I. Abelev, et al. (STAR Collaboration), Phys. Rev. C 75:064901 (2007)
    [40] A. Adare et al (PHENIX Collaboration), Phys. Rev. C, 83: 052004 (2010)
    [41] A. Adare, et al. (PHENIX Collaboration), Phys. Rev. C 83:052004 (2010)
    [42] K. Aamodt et al (ALICE Collaboration), Eur. Phys. J. C, 71: 1655 (2011).
    [43] G. Aad et al (ATLAS Collaboration), New J. Phys., 13: 053033 (2011)
    [44] K. Aamodt, et al. (ALICE Collaboration), Eur. Phys. J. C 71:1655 (2011).
    [45] V. Khachatryan et al (CMS Collaboration), JHEP, 05: 064 (2011)
    [46] G. Aad, et al. (ATLAS Collaboration), New J. Phys. 13:053033 (2011)
    [47] R. Hanel and S. Thurner, Europhys. Lett., 93: 20006 (2011)
    [48] V. Khachatryan, et al. (CMS Collaboration), JHEP 05:064 (2011)
    [49] R. Hanel and S. Thurner, Europhys. Lett., 96: 50003 (2011)
    [50] R. Hanel and S. Thurner, Europhys. Lett. 93:20006 (2011)
    [51] A. N. Tawfik, Lattice QCD thermodynamics and RHIC-BES particle production within generic nonextensive statistics, submitted to EPJA
    [52] R. Hanel and S. Thurner, Europhys. Lett. 96:50003 (2011)
    [53] A. S. Parvan, Eur. Phys. J. A, 51: 108 (2015)
    [54] Abdel Nasser Tawfik, Lattice QCD thermodynamics and RHIC-BES particle production within generic nonextensive statistics, submitted to EPJA
    [55] A. S. Parvan, Eur. Phys. J. A 51:108 (2015)
    [56] A. Deppman, Physica A, 391: 6380 (2012)
    [57] A. Deppman, Physica A 391:6380 (2012)
    [58] A. S. Parvan, Phys. Lett. A, 350: 331 (2006)
    [59] A. S. Parvan, Phys. Lett. A, 360: 26 (2006)
    [60] A. S. Parvan, Phys. Lett. A 350:331 (2006)
    [61] A. S. Parvan, Phys. Lett. A 360:26 (2006)
    [62] J. Cleymans and D. Worku, J. Phys. G, 39: 025006 (2012)
    [63] J. Letessier and J. Rafelski, Hadrons and Quark-Gluon Plasma, (Cambridge University Press, UK, 2004), p. 210
    [64] J. Cleymans and D. Worku, J. Phys. G 39:025006 (2012)
    [65] S. Thurner and R. Hanel, Int. J. Mod. Phys.: Conf. series, 16: 105 (2012)
    [66] J. Letessier and J. Rafelski, Hadrons and Quark-Gluon Plasma, (Cambridge University Press, UK, 2004) p. 210
    [67] J. Cleymans, H. Oeschler, K. Redlich, and S. Wheaton, Phys. Rev. C, 73: 034905 (2006)
    [68] S. Thurner and R. Hanel, Int. J. Mod. Phys.:Conf. series 16:105 (2012)
    [69] A. Andronic, P. Braun-Munzinger, and J. Stachel, Nucl. Phys. A, 772: 167 (2006)
    [70] J. Cleymans, H. Oeschler, K. Redlich, and S. Wheaton, Phys. Rev. C 73:034905 (2006)
    [71] A. Andronic, P. Braun-Munzinger, and J. Stachel, Nucl. Phys. A 772:167 (2006)
    [72] F. Becattini, J. Manninen, and M. Gazdzicki, Phys. Rev. C, 73: 044905 (2006)
    [73] C. Albajar et al (UA1 Collaboration), Nucl. Phys. B, 335, 261 (1990)
    [74] F. Becattini, J. Manninen, and M. Gazdzicki, Phys. Rev. C 73:044905 (2006)
    [75] A. Adare et al (PHENIX Collaboration), Phys. Rev. C, 88: 024906 (2013)
    [76] C. Albajar, et al. (UA1 Collaboration), Nucl. Phys. B 335, 261 (1990)
    [77] B. I. Abelev et al (STAR Collaboration), Phys. Rev. C, 79: 034909 (2009)
    [78] A. Adare, et al. (PHENIX Collaboration), Phys. Rev. C 88:024906 (2013)
    [79] B. Abelev et al (ALICE Collaboration), Phys. Lett. B, 728: 25 (2014)
    [80] B. I. Abelev, et al. (STAR Collaboration), Phys. Rev. C 79:034909 (2009)
    [81] B. Abelev, et al. (ALICE Collaboration), Phys. Lett. B 728:25 (2014)
    [82] B. Abelev et al (ALICE Collaboration), Phys. Rev. Lett. 109: 252301 (2012)
    [83] A. N. Tawfik and E. Abbas, Phys. Part. Nucl. Lett., 12: 521 (2015)
    [84] B. Abelev, et al. (ALICE Collaboration), Phys. Rev. Lett. 109:252301 (2012)
    [85] Abdel Nasser Tawfik and Ehab Abbas, Phys. Part. Nucl. Lett. 12:521 (2015)
    [86] C. Anteneodo and A. R. Plastino, J. Phys A: Math. Gen., 32: 1089 (1999)
    [87] C. Anteneodo and A. R. Plastino. J. Phys A:Math. Gen. 32:1089 (1999).
    [88] R. Hanel and S. Thurner, arXir: 1005.0138 [physics.class-ph]
    [89] R. Hanel and S. Thurner, A classification of complex statistical systems in terms of their stability and a thermodynamical derivation of their entropy and distribution functions, 1005.0138[physics.class-ph].
    [90] Fariel Shafee, IMA J. Appl. Math., 72: 785 (2007)
    [91] Fariel Shafee, IMA J. Appl. Math. 72:785 (2007).
    [92] J. Cleymans et al, Phys. Lett. B, 723: 351 (2013)
    [93] G. Wilk and Z. Wlodarczyk, Phys. Rev. Lett., 84: 2770 (2000)l Nasser Tawfik, Int. J. Mod. Phys. A 29:1430021 (2014)
    [94] J. Cleymans, et al., Phys. Lett. B 723:351 (2013)
    [95] G. Wilk and Z. Wlodarczyk, Phys. Rev. Lett. 84:2770 (2000).
  • [1] A. N. Tawfik, Int. J. Mod. Phys. A, 29: 1430021 (2014)
    [2] A. Tawfik, J. Phys. G, 40: 055109 (2013)
    [3] R. Hagedorn, Nuovo Cimento Suppl., 3: 147 (1965)
    [4] A. Tawfik, J. Phys. G 40:055109 (2013)
    [5] R. Hagedorn, Nuovo Cimento Suppl. 3:147 (1965)
    [6] A. Tawfik, Prog. Theor. Phys., 126: 279 (2011)
    [7] A. Tawfik, Prog. Theor. Phys. 126:279 (2011)
    [8] C. Beck, Physica, A, 286: 164 (2000)
    [9] I. Bediaga, E. M. F. Curado, and J. M. de Miranda, Physica A, 286: 156 (2000)
    [10] C. Beck, Physica A 286:164 (2000)
    [11] W. M. Alberico, A. Lavagno, and P. Quarati, Eur. Phys. J. C, 12: 499-506 (2000)
    [12] I. Bediaga, E.M.F. Curado and J.M. de Miranda, Physica A 286:156 (2000)
    [13] W. M. Alberico, A. Lavagno, and P. Quarati, Eur. Phys. J. C 12:499-506 (2000)
    [14] S. Tripathy { et al.}, Eur. Phys. J. A, 52: 289 (2016)
    [15] A. Khuntia et al, Eur. Phys. J. A, 52: 292 (2016)
    [16] S. Tripathy, et al., Eur. Phys. J. A 52:289 (2016)
    [17] T. Bhattacharyya et al, Eur. Phys. J. A, 52: 30 (2016)
    [18] A. Khuntia, et al., Eur. Phys. J. A 52:292 (2016)
    [19] A. Deppman, J. Phys. G, 41: 055108 (2014)
    [20] T. Bhattacharyya, et al., Eur. Phys. J. A 52:30 (2016)
    [21] A. Deppman, J. Phys. G 41:055108 (2014)
    [22] W. M. Alberico et al, Physica A, 387: 467 (2008)
    [23] W. M. Alberico, et al., Physica A 387:467 (2008)
    [24] T. Bhattacharyya, R. Sahoo, and P. Samantray, Eur. Phys. J. A, 52: 283 (2016)
    [25] Q. A. Wong, Entropy, 5: 220 (2003).
    [26] T. Bhattacharyya, R. Sahoo, and P. Samantray, Eur. Phys. J. A 52:283 (2016)
    [27] Q. A. Wong, Entropy, 5:220 (2003).
    [28] A. N. Tawfik, Eur. Phys. J. A, 52: 253 (2016)
    [29] A. Bialas, Phys. Lett. B, 747: 190 (2015)
    [30] Abdel Nasser Tawfik, Eur. Phys. J. A 52:253 (2016)
    [31] G. Wilk and Z. Wlodarcyk, Phys. Lett. A, 379: 2941 (2015)
    [32] A. Bialas, Phys. Lett. B 747:190 (2015)
    [33] C. Beck and E. G. D. Cohen, Physica A, 322: 267 (2003)
    [34] G. Wilk and Z. Wlodarcyk, Phys. Lett. A 379:2941 (2015)
    [35] C. Beck and E. G. D. Cohen, Physica A 322:267 (2003)
    [36] F. Sattin, Eur. Phys. J. B, 49: 219 (2006)
    [37] F. Sattin, Eur. Phys. J. B 49:219 (2006)
    [38] B. I. Abelev et al (STAR Collaboration), Phys. Rev. C, 75: 064901 (2007)
    [39] B. I. Abelev, et al. (STAR Collaboration), Phys. Rev. C 75:064901 (2007)
    [40] A. Adare et al (PHENIX Collaboration), Phys. Rev. C, 83: 052004 (2010)
    [41] A. Adare, et al. (PHENIX Collaboration), Phys. Rev. C 83:052004 (2010)
    [42] K. Aamodt et al (ALICE Collaboration), Eur. Phys. J. C, 71: 1655 (2011).
    [43] G. Aad et al (ATLAS Collaboration), New J. Phys., 13: 053033 (2011)
    [44] K. Aamodt, et al. (ALICE Collaboration), Eur. Phys. J. C 71:1655 (2011).
    [45] V. Khachatryan et al (CMS Collaboration), JHEP, 05: 064 (2011)
    [46] G. Aad, et al. (ATLAS Collaboration), New J. Phys. 13:053033 (2011)
    [47] R. Hanel and S. Thurner, Europhys. Lett., 93: 20006 (2011)
    [48] V. Khachatryan, et al. (CMS Collaboration), JHEP 05:064 (2011)
    [49] R. Hanel and S. Thurner, Europhys. Lett., 96: 50003 (2011)
    [50] R. Hanel and S. Thurner, Europhys. Lett. 93:20006 (2011)
    [51] A. N. Tawfik, Lattice QCD thermodynamics and RHIC-BES particle production within generic nonextensive statistics, submitted to EPJA
    [52] R. Hanel and S. Thurner, Europhys. Lett. 96:50003 (2011)
    [53] A. S. Parvan, Eur. Phys. J. A, 51: 108 (2015)
    [54] Abdel Nasser Tawfik, Lattice QCD thermodynamics and RHIC-BES particle production within generic nonextensive statistics, submitted to EPJA
    [55] A. S. Parvan, Eur. Phys. J. A 51:108 (2015)
    [56] A. Deppman, Physica A, 391: 6380 (2012)
    [57] A. Deppman, Physica A 391:6380 (2012)
    [58] A. S. Parvan, Phys. Lett. A, 350: 331 (2006)
    [59] A. S. Parvan, Phys. Lett. A, 360: 26 (2006)
    [60] A. S. Parvan, Phys. Lett. A 350:331 (2006)
    [61] A. S. Parvan, Phys. Lett. A 360:26 (2006)
    [62] J. Cleymans and D. Worku, J. Phys. G, 39: 025006 (2012)
    [63] J. Letessier and J. Rafelski, Hadrons and Quark-Gluon Plasma, (Cambridge University Press, UK, 2004), p. 210
    [64] J. Cleymans and D. Worku, J. Phys. G 39:025006 (2012)
    [65] S. Thurner and R. Hanel, Int. J. Mod. Phys.: Conf. series, 16: 105 (2012)
    [66] J. Letessier and J. Rafelski, Hadrons and Quark-Gluon Plasma, (Cambridge University Press, UK, 2004) p. 210
    [67] J. Cleymans, H. Oeschler, K. Redlich, and S. Wheaton, Phys. Rev. C, 73: 034905 (2006)
    [68] S. Thurner and R. Hanel, Int. J. Mod. Phys.:Conf. series 16:105 (2012)
    [69] A. Andronic, P. Braun-Munzinger, and J. Stachel, Nucl. Phys. A, 772: 167 (2006)
    [70] J. Cleymans, H. Oeschler, K. Redlich, and S. Wheaton, Phys. Rev. C 73:034905 (2006)
    [71] A. Andronic, P. Braun-Munzinger, and J. Stachel, Nucl. Phys. A 772:167 (2006)
    [72] F. Becattini, J. Manninen, and M. Gazdzicki, Phys. Rev. C, 73: 044905 (2006)
    [73] C. Albajar et al (UA1 Collaboration), Nucl. Phys. B, 335, 261 (1990)
    [74] F. Becattini, J. Manninen, and M. Gazdzicki, Phys. Rev. C 73:044905 (2006)
    [75] A. Adare et al (PHENIX Collaboration), Phys. Rev. C, 88: 024906 (2013)
    [76] C. Albajar, et al. (UA1 Collaboration), Nucl. Phys. B 335, 261 (1990)
    [77] B. I. Abelev et al (STAR Collaboration), Phys. Rev. C, 79: 034909 (2009)
    [78] A. Adare, et al. (PHENIX Collaboration), Phys. Rev. C 88:024906 (2013)
    [79] B. Abelev et al (ALICE Collaboration), Phys. Lett. B, 728: 25 (2014)
    [80] B. I. Abelev, et al. (STAR Collaboration), Phys. Rev. C 79:034909 (2009)
    [81] B. Abelev, et al. (ALICE Collaboration), Phys. Lett. B 728:25 (2014)
    [82] B. Abelev et al (ALICE Collaboration), Phys. Rev. Lett. 109: 252301 (2012)
    [83] A. N. Tawfik and E. Abbas, Phys. Part. Nucl. Lett., 12: 521 (2015)
    [84] B. Abelev, et al. (ALICE Collaboration), Phys. Rev. Lett. 109:252301 (2012)
    [85] Abdel Nasser Tawfik and Ehab Abbas, Phys. Part. Nucl. Lett. 12:521 (2015)
    [86] C. Anteneodo and A. R. Plastino, J. Phys A: Math. Gen., 32: 1089 (1999)
    [87] C. Anteneodo and A. R. Plastino. J. Phys A:Math. Gen. 32:1089 (1999).
    [88] R. Hanel and S. Thurner, arXir: 1005.0138 [physics.class-ph]
    [89] R. Hanel and S. Thurner, A classification of complex statistical systems in terms of their stability and a thermodynamical derivation of their entropy and distribution functions, 1005.0138[physics.class-ph].
    [90] Fariel Shafee, IMA J. Appl. Math., 72: 785 (2007)
    [91] Fariel Shafee, IMA J. Appl. Math. 72:785 (2007).
    [92] J. Cleymans et al, Phys. Lett. B, 723: 351 (2013)
    [93] G. Wilk and Z. Wlodarczyk, Phys. Rev. Lett., 84: 2770 (2000)l Nasser Tawfik, Int. J. Mod. Phys. A 29:1430021 (2014)
    [94] J. Cleymans, et al., Phys. Lett. B 723:351 (2013)
    [95] G. Wilk and Z. Wlodarczyk, Phys. Rev. Lett. 84:2770 (2000).
  • 加载中

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3. Waqas, M., Alrebdi, H.I., Ajaz, M. et al. Transverse momentum distributions of the identified particles in mini–bias non-single diffracted p+p collisions at 200 GeV[J]. Chinese Journal of Physics, 2024. doi: 10.1016/j.cjph.2023.11.018
4. Tawfik, A., Elyazeed, E.R.A., Alshehri, A.A. et al. An appropriate statistical approach for non-equilibrium particle production[J]. Modern Physics Letters B, 2024. doi: 10.1142/S0217984924504839
5. Yassin, H., Tawfik, A.N., Abo Elyazeed, E.R. Extensive/nonextensive statistics for pt distributions of various charged particles produced in p+p and a+a collisions in a wide range of energies[J]. Ukrainian Journal of Physics, 2022, 67(6): 393-430. doi: 10.15407/ujpe67.6.393
6. Yassin, H., Elyazeed, E.R.A., Tawfik, A.N. Transverse momentum spectra of strange hadrons within extensive and nonextensive statistics[J]. Physica Scripta, 2020, 95(7): 075305. doi: 10.1088/1402-4896/ab9128
7. Li, L.-L., Liu, F.-H. Kinetic Freeze-Out Properties from Transverse Momentum Spectra of Pions in High Energy Proton-Proton Collisions[J]. Physics (Switzerland), 2020, 2(2): 277-308. doi: 10.3390/physics2020015
8. Ishihara, M.. Chiral phase transition within the linear sigma model in the Tsallis nonextensive statistics based on density operator[J]. International Journal of Modern Physics E, 2019, 28(4): 1950020. doi: 10.1142/S0218301319500204
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10. Lao, H.-L., Liu, F.-H., Li, B.-C. et al. Examining the model dependence of the determination of kinetic freeze-out temperature and transverse flow velocity in small collision system[J]. Nuclear Science and Techniques, 2018, 29(11): 164. doi: 10.1007/s41365-018-0504-z
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Get Citation
Abdel Nasser Tawfik, Hayam Yassin, Eman R and Abo Elyazeed. On thermodynamic self-consistency of generic axiomatic-nonextensive statistics[J]. Chinese Physics C, 2017, 41(5): 053107. doi: 10.1088/1674-1137/41/5/053107
Abdel Nasser Tawfik, Hayam Yassin, Eman R and Abo Elyazeed. On thermodynamic self-consistency of generic axiomatic-nonextensive statistics[J]. Chinese Physics C, 2017, 41(5): 053107.  doi: 10.1088/1674-1137/41/5/053107 shu
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Revised: 2016-12-23
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On thermodynamic self-consistency of generic axiomatic-nonextensive statistics

  • 1. Egyptian Center for Theoretical Physics (ECTP), Modern University for Technology and Information (MTI), 11571 Cairo, Egypt
  • 2. World Laboratory for Cosmology and Particle Physics (WLCAPP), 11571 Cairo, Egypt
  • 3.  Physics Department, Faculty of Women for Arts, Science and Education, Ain Shams University, 11577 Cairo, Egypt

Abstract: Generic axiomatic-nonextensive statistics introduces two asymptotic properties, to each of which a scaling function is assigned. The first and second scaling properties are characterized by the exponents c and d, respectively. In the thermodynamic limit, a grand-canonical ensemble can be formulated. The thermodynamic properties of a relativistic ideal gas of hadron resonances are studied, analytically. It is found that this generic statistics satisfies the requirements of the equilibrium thermodynamics. Essential aspects of the thermodynamic self-consistency are clarified. Analytical expressions are proposed for the statistical fits of various transverse momentum distributions measured in most-central collisions at different collision energies and colliding systems. Estimations for the freezeout temperature (Tch) and the baryon chemical potential (μb) and the exponents c and d are determined. The earlier are found compatible with the parameters deduced from Boltzmann-Gibbs (BG) statistics (extensive), while the latter refer to generic nonextensivities. The resulting equivalence class (c,d) is associated with stretched exponentials, where Lambert function reaches its asymptotic stability. In some measurements, the resulting nonextensive entropy is linearly composed on extensive entropies. Apart from power-scaling, the particle ratios and yields are excellent quantities to highlighting whether the particle production takes place (non)extensively. Various particle ratios and yields measured by the STAR experiment in central collisions at 200, 62.4 and 7.7 GeV are fitted with this novel approach. We found that both c and d<1, i.e. referring to neither BG- nor Tsallis-type statistics, but to (c,d)-entropy, where Lambert functions exponentially rise. The freezeout temperature and baryon chemical potential are found comparable with the ones deduced from BG statistics (extensive). We conclude that the particle production at STAR energies is likely a nonextensive process but not necessarily BG or Tsallis type.

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