Effects of inelastic (re)scattering processes ss→gg and gg→ss on strange hadron production in pp collisions at RHIC and LHC energies

  • The rapidity densities at mid-rapidity and the transverse momentum distributions for strange hadrons produced in pp collisions are analyzed using the modi ed PACIAE model by considering the effect of inelastic (re)scattering processes ss→gg and gg→ss in parton (re)scattering. The calculated results of the transverse momentum spectra of the strangeness fitting with data measured by STAR and ALICE Collabora- tions can be improved, especially at large transverse momentum levels. This demonstrates that the effect of inelastic (re)scattering processes of ss→gg and gg→ss is not negligible at RHIC and LHC energy levels.
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  • [1] SA Ben-Hao, ZHOU Dai-Mei, DONG Bao-Guo, YAN Yu-Liang, MA Hai-Liang, LI Xiao-Mei. J. Phys. G: Nucl. Part. Phys., 2009, 36: 025007; YAN Yu-Liang, ZHOU Dai-Mei, DONG Bao-Guo, LI Xiao-Mei, MA Hai-Liang, SA Ben-Hao. Phys. Rev. C, 2009, 79: 054902; SA Ben-Hao, ZHOU Dai-Mei, YAN Yu-Liang, LI Xiao-Mei, FENG Sheng-Qin, DONG Bao-Guo, CAI Xu, arXiv:1104.1238v1[2] Sjstrand T, Mrenna S, Skands P, J. HEP NP, 2006, 05: 026 (in Chinese)[3] LONG Hai-Yan, FENG Sheng-Qin, ZHOU Dai-Mei, YAN Yu-Liang, MA Hai-Liang, SA Ben-Hao. Phys. Rev. C, 2011, 84: 034905[4] TAI An, SA Ben-Hao. Phys. Lett. B, 1997, 409: 393[5] Abelev B I et al. (STAR collaboration). Phys. Rev. C, 2007, 75: 064901[6] Admodt K et al. (ALICE collaboration). Eur. Phys. J. C, 2011, 71: 1594[7] Rafelski J. Phys. Rep., 1982, 88: 331[8] Abbott T et al. (E802 collaboration). Phys. Rev. Lett., 1990, 64: 847[9] Eiseman S E et al. (E810 collaboration). Phys. Lett. B, 1990, 248: 254[10] Bratkovskaya E L et al. Phys. Rev. C, 2004, 69: 054907[11] Blume C, Markert C. Progress in Particle and Nuclear Physics, 2011[12] Andersson B, Gustafson G, Ingelman G, Sjstrand T. Phys. Rep., 1983, 97: 31[13] Bocquet G et al. (UA1 collaboration). Phys. Lett. B, 1996, 366: 447[14] TAI An, SA Ben-Hao. Phys. Rev. C, 1998, 57: 261[15] Pi H. Comput. Phys. Commun., 1992, 71: 173[16] SA Ben-Hao, TAI An. Comput. Phys. Commun., 1995, 90: 121; TAI An, SA Ben-Hao. Comput. Phys. Commun., 1999, 116: 353[17] Combridge B L, Kripfgang J, Ranft J. Phys. Lett. B, 1977, 70: 234
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LONG Hai-Yan and FENG Sheng-Qin. Effects of inelastic (re)scattering processes ss→gg and gg→ss on strange hadron production in pp collisions at RHIC and LHC energies[J]. Chinese Physics C, 2012, 36(7): 616-621. doi: 10.1088/1674-1137/36/7/009
LONG Hai-Yan and FENG Sheng-Qin. Effects of inelastic (re)scattering processes ss→gg and gg→ss on strange hadron production in pp collisions at RHIC and LHC energies[J]. Chinese Physics C, 2012, 36(7): 616-621.  doi: 10.1088/1674-1137/36/7/009 shu
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Received: 2011-10-31
Revised: 1900-01-01
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Effects of inelastic (re)scattering processes ss→gg and gg→ss on strange hadron production in pp collisions at RHIC and LHC energies

    Corresponding author: FENG Sheng-Qin,

Abstract: The rapidity densities at mid-rapidity and the transverse momentum distributions for strange hadrons produced in pp collisions are analyzed using the modi ed PACIAE model by considering the effect of inelastic (re)scattering processes ss→gg and gg→ss in parton (re)scattering. The calculated results of the transverse momentum spectra of the strangeness fitting with data measured by STAR and ALICE Collabora- tions can be improved, especially at large transverse momentum levels. This demonstrates that the effect of inelastic (re)scattering processes of ss→gg and gg→ss is not negligible at RHIC and LHC energy levels.

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