Physics of Particles and Nuclei Letters

, Volume 13, Issue 1, pp 74–78 | Cite as

High multiplicity study and gluon dominance model

Physics of Elementary Particles and Atomic Nuclei. Experiment

Abstract

Study of high multiplicity events in proton-proton interactions is carried out at the U-70 accelerator (IHEP, Protvino). These events are extremely rare. Usually, Monte Carlo codes underestimate topological cross sections in this region. The gluon dominance model (GDM) was offered to describe them. It is based on QCD and a phenomenological scheme of a hadronization stage. This model indicates a recombination mechanism of hadronization and a gluon fission. Future program of the SVD Collaboration is aimed at studying a long-standing puzzle of excess soft photon yield and its connection with high multiplicity at the U-70 and Nuclotron facility at JINR, Dubna.

Keywords

Charge Exchange Nucleus Letter High Multiplicity Valence Quark Neutral Pion 

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References

  1. 1.
    V. N. Ryadovikov, “Topological cross sections in proton-proton interactions at 50 GeV,” Phys. At. Nucl. 75, 315–320 (2012).CrossRefGoogle Scholar
  2. 2.
    E. S. Kokoulina, V. A. Nikitin, Yu. P. Petukhov, and A. Ya. Kutov, “Proton interactions with high multiplicity,” Phys. At. Nucl. 75, 664–667 (2012).CrossRefGoogle Scholar
  3. 3.
    V. V. Avdeichikov et al. (SVD-2 Collab.), “Spectrometer with a vertex detector for experiments at the IHEP accelerator,” Instrum. Exp. Tech. 56, 9–31 (2013).CrossRefGoogle Scholar
  4. 4.
    V. V. Avdeichikov et al., “(SVD-2 Collab.) A trigger of events with a high multiplicity of charged particles at the SVD-2 setup,” Instrum. Exp. Tech. 54, 159–168 (2011).CrossRefGoogle Scholar
  5. 5.
    E. S. Kokoulina, A. Ya. Kutov, V. A. Nikitin, and V. V. Popov, “Analysis of high multiplicity events,” Phys. Part. Nucl. Lett. 8, 855–859 (2011).CrossRefGoogle Scholar
  6. 6.
    E. S. Kokoulina, V. A. Nikitin, Yu. P. Petukhov, A. V. Karpov, and A. Ya. Kutov, “Search for collective phenomena in hadron interactions,” Phys. At. Nucl. 73, 2116–2124 (2010).CrossRefGoogle Scholar
  7. 7.
    V. V. Ammosov et al. (Mirabelle Collab.), “Average charged particle multiplicity and topological cross sections in 5-GeV/c and 69-GeV/c pp interactions,” Phys. Lett. B 42, 519–521 (1972).CrossRefADSGoogle Scholar
  8. 8.
    E. S. Kokoulina, “2011 neutral pion fluctuations in pp collisions at 50 GeV by SVD-2,” Prog. Theor. Phys. Suppl. 193, 306–309 (2011).CrossRefGoogle Scholar
  9. 9.
    A. G. Afonin et al. (SVD-2 Collab.), “Neutral pion number fluctuations at high multiplicity in pp-interactions at 50 GeV,” EPJ Web Conf. 37, 06002 (2012).CrossRefGoogle Scholar
  10. 10.
    V. N. Ryadovikov, “Fluctuations of the number of neutral pions at high multiplicity in pp interactions at 50 GeV,” Phys. At. Nucl. 75, 989–998 (2012).CrossRefGoogle Scholar
  11. 11.
    E. Kokoulina (for SVD-2 Collab.), “Evidence for a pion condensate formation in pp interactions at U-70,” in Proceedings of the 36th International Conference for High Energy Physics ICHEP-2012, Melbourne, Australia, July 4–11, 2012, PoS, 259 (2013).Google Scholar
  12. 12.
    E. S. Kokoulina, “The evidence for the pion condensate formation in pp interactions at U-70,” in Proceedings of the 21st International Baldin Seminar on High Energy Physics Problems ISHEPP-XXI, JINR, Dubna, Russia, Sept. 10–15, 2012, PoS, 007 (2012).Google Scholar
  13. 13.
    L. D. Landau and E. M. Lifshitz, Course of Theoretical Physics, Vol. 5: Statistical Physics (Nauka, Moscow, 1995; Pergamon, Oxford, 1980).Google Scholar
  14. 14.
    V. V. Begun and M. I. Gorenstein, “Bose-Einstein condensation of pions in high multiplicity events,” Phys. Lett. B 653, 190–195 (2007).CrossRefADSGoogle Scholar
  15. 15.
    V. V. Begun and M. I. Gorenstein, “Power law in microcanonical ensemble with scaling volume fluctuations,” Phys. Rev. C 78, 024904 (2008).CrossRefADSGoogle Scholar
  16. 16.
    J. G. Ulery (STAR Collab.), “Are there mach cones in heavy ion collisions? Three-particle correlations from STAR,” Int. J. Mod. Phys. E 16, 10 (2005).Google Scholar
  17. 17.
    P. Chliapnikov et al., “Observation of direct soft photon production in K+ p interactions at 70-GeV/c,” Phys. Lett. B 141, 276–280 (1984).CrossRefADSGoogle Scholar
  18. 18.
    E. S. Kokoulina, A. Ya. Kutov, and V. A. Nikitin, “Gluon dominance model and cluster production,” Braz. J. Phys. 37, 785–787 (2007).CrossRefADSGoogle Scholar
  19. 19.
    E. S. Kokoulina and A. Ya. Kutov, “High-multiplicity study,” Phys. Part. Nucl. Lett. 71, 1573–1581 (2008).Google Scholar
  20. 20.
    E. S. Kokoulina and V. A. Nikitin, “Study of multiparticle production by gluon dominance model,” in Proceedings of the 17the International Baldin Seminar on High Energy Physics Problems: Relativistic Nuclear Physics and Quantum Chromodynamics ISHEPP 2004 (2005), pp. 319–326.Google Scholar
  21. 21.
    P. F. Ermolov, E. S. Kokoulina, E. A. Kuraev, A. Ya. Kutov, V. A. Nikitin, A. A. Pankov, I. A. Roufanov, and N. K. Zhidkov, “Study of multiparticle production by gluon dominance model, Part II,” in Proceedings of the 17the International Baldin Seminar on High Energy Physics Problems: Relativistic Nuclear Physics and Quantum Chromodynamics ISHEPP 2004 (2005), pp. 327–336.Google Scholar
  22. 22.
    M. K. Volkov, E. S. Kokoulina, and E. A. Kuraev, “Excitation of physical vacuum,” Phys. Part. Nucl. Lett. 5, 16–23 (2004).Google Scholar
  23. 23.
    S. Barshay, “1989 anamolous soft photons from a coherent hadronic phase in high-energy collisions,” Phys. Lett. B 227, 279–284 (1989).CrossRefADSGoogle Scholar
  24. 24.
    White Paper. http://theor.jinr.ru/twiki-cgi/view/NICA/NICAWhitePaperGoogle Scholar
  25. 25.
    E. S. Kokoulina, “Analysis of multiparticle dynamics in e+ e–annihilation into hadrons by two stage model,” in Proceedings of the 32nd International Symposium on Multiparticle Dynamics, Alushta, Crimea, Ukraine, 2002 (World Scientific, 2003), 340–343.Google Scholar
  26. 26.
    E. S. Kokoulina, “Gluon dominance model and e + e annihilation,” in Proceedings of the 13th Annual Seminar on Nonlinear Phenomena in Complex Systems, Minsk, May 16–19, 2006 (Minsk, 2006), Vol. 13, pp. 73–82.Google Scholar
  27. 27.
    S. V. Semenov, S. M. Troshin, N. E. Tyurin, and O. A. Khrustalev, “Connection between elastic and inelastic processes at high-energies,” Sov. J. Nucl. Phys. 22, 410 (1975).Google Scholar
  28. 28.
    A. Giovannini, “QCD jets as Markov branching processes,” Nucl. Phys. B 61, 429–448 (1979).CrossRefADSGoogle Scholar
  29. 29.
    E. A. Kuraev, S. Bakmaev, and E. S. Kokoulina, “Azimuthal correlation of gluon jets created in pp, pp and e + e collisions,” Nucl. Phys. B 851, 551–564 (2011).CrossRefMATHADSGoogle Scholar
  30. 30.
    L. A. Didenko, V. S. Murzin, and L. I. Sarycheva, “Leading and charged exchange in pi-p interactions at 40 GeV,” in Proceedings of the 16th International Cosmic Ray Conference (1979), Vol. 6, pp. 29–33.ADSGoogle Scholar
  31. 31.
    E. A. Kuraev, E. S. Kokoulina, and E. Tomasi-Gustafsson, “Hard light meson production in (anti)protonhadron collisions and charge-exchange reactions,” Phys. Part. Nucl. Lett. 12, 1–7 (2015).CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

  1. 1.JINR, VBLHE, DubnaMoscow regionRussian

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