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A. Malakhov

Antiparticle to Particle Ratios in Heavy Ion Interactions and A symptotic Properties of the Nuclear Matter. A. Malakhov. Laboratory of High Energy Physics Joint Institute for Nuclear Research malakhov@lhe.jinr.ru. HADRON STRUCTURE '13 30 June — 4 July, 2013

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A. Malakhov

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  1. Antiparticle to Particle Ratios in Heavy Ion Interactions and Asymptotic Properties of the Nuclear Matter A. Malakhov Laboratory of High Energy Physics Joint Institute for Nuclear Research malakhov@lhe.jinr.ru HADRON STRUCTURE '13 30 June — 4 July, 2013 Hotel SOREA Hutník, Tatranské Matliare, Slovak Republic

  2. Some years ago together with A.M.Baldin we published an article which predicted the particle yield as a result of nuclei interactions at high energy. At present the corresponding experimental data have started to appear up to the LHC energy. In this talk I will give a comparison ofpredictions made many years ago with the latest experimental data. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  3. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  4. strangeness baryon __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  5. Using the principle of symmetries, in particular, symmetries of the solutions, allowed A.M.Baldin to enter the self-similarity parameter of П for the nucleus interaction: П = min[½ √(uI NI + uIINII)2], where NI and NIIare cumulative numbers for nuclei I and II, and uI and uIIare 4-velocities of these nuclei. A.M.Baldin, A.A.Baldin. Phys. Particles and Nuclei, v.29, No.3 (1998) p.232. A.M.Baldin, A.I.Malakhov, and A.N.Sissakian. Physics of Particles and Nuclei, Vol.32. Suppl. 1, 2001, pp.S4-S30. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  6. In this casethe invariant cross-sections of the output inclusive particles of different types at nucleus interactions with atomic numbers AI and AII, are described by universal dependence in a broad energy range and different atomic numbersof colliding nuclei: Ed3/dp3 = C1AI(NI) AII(NII) exp (-П/C2), where(NI) = 1/3 + NI/3, (NII) = 1/3 + NII/3, С1 = 1.9∙104mbGeV-2с3st-1и С2 = 0.1250,002 __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  7. The experimental data on cumulative pion production were obtained at the ITEP and IHEP accelerators in dependence on similarity parameterп. The experimental data are normed on A dependences. A.M.Baldin, A.A.Baldin. Phys. Particles and Nuclei, v.29, No.3 (1998) p.232. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  8. A.M.Baldin, A.A.Baldin. Phys. Particles and Nuclei, v.29, No.3 (1998) p.232. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  9. A.M.Baldin, A.A.Baldin. Phys. Particles and Nuclei, v.29, No.3 (1998) p.232. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  10. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  11. Baldin A.M., Malakhov A.I. JINR Rapid Communications, No.1(87)-98, 1998, pp.5-12. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  12. PREDICTIONS __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  13. Asymptotics s/(2mImII)  (uIuII) = ch2Y   Пmin= (mT/2m0)[1+√1+(2-m12)/mT2 N  0 __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  14. The analytical representation for П leads to the following conclusions: There is the limit value of П at high energies The ratio of particle to antiparticle and nucleus to antinucleus production cross-section goes to the unit while energy rising The effective number of nucleons involved in the reaction decreases with collision energy increasing Probability of observation of antinuclei and fragments in the central rapidity region is small __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  15. For baryon For antibaryon __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  16. (Antibaryon/baryon) __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  17. Nuclear Physics A 859(2011) 63-72. http://hepdata.cedar.ac.uk/view/p7907. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  18. Nuclear Physics A610 (1996) 306c-316c (SPS, NA52). __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  19. RHIC, √S = 200 GeV G.Ambrosini et al. arXiv:nucl-ex/0011016v1 22 Nov 2000. L.Xue et al. arXiv:1206.4780v1 [nucl-th] 21 Jun 2012. Physical Review C 85 (2012) 044913 (SPS, NA49). SPS, √S = 7,3 GeV __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  20. B.Hippolyte. XXXVIII Rencontres de Moriond – Les Arcs-03/26/03 __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  21. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  22. Experiment: __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  23. Energy dependence of the midrapidity K-/K+ ratio in central Pb+Pb (Au+Au) collision The ratio increases with srt (sNN) from about 0.15 at low AGS energy [1] to about 0.5 at SP S energies [2] and reaches about 0.9 at RHIC [3]. [1] L. Ahle et al., E802 Collaboration, Phys. Rev. C 57, 466 (1998); 58, 3523 (1998); 60, 044904 (1999); E866 and E917 Collaboration, Phys. Lett. B 476, 1 (2000); 490, 53 (2000); J.Barrette et al., E877 Collaboration, Phys. Rev. C 62, 024901 (2000); D. Pelte et al., FOPI Collaboration, Z. Phys. A 357, 215 (1997). [2] S. V. Afanasiev et al. Energy dependence of pion and kaon production in central Pb¿Pb collisions. PHYSICAL REVIEW C 66, 054902, 2002 [3] K. Adcox et al., PHENIX Collaboration, Phys. Rev. Lett. 88, 242301 (2002); B. B. Back et al., PHOBOS Collaboration, ibid. 87, 102301 (2001). __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  24. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  25. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  26. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  27. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  28. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  29. Exper.: J.Adams et al. arXiv:nucl-ex/0211024v2 15 Jul 2003 __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  30. S.V.Afanasiev et al. Phys. Rev. C 66, 054902 (2002) (SPS, NA49) __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  31. __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  32. Conclusions • The description of the nuclear interactions in the four-velocity space and introduction of the self-similarity parameter allows one to predict the secondary particles production in a wide energy range from several GeV to the LHC energy with a good accuracy • For a more detailed examination of this approach is required more accurate experimental data on production anti-nuclei and nuclei (anti-d, d, anti-He3, He3 and etc.) • The more detail experimental data on the РТ dependence of the particle production need to have __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

  33. Thank you for the attention! __________________________________________________________________________________________A.Malakhov,HADRON STRUCTURE '13, 30 June-4 July, 2013, Tatranské Matliare, Slovak Republic .

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