The European Physical Journal C

, Volume 62, Issue 1, pp 145–150 | Cite as

Generation of complete events containing very high-p T jets

Regular Article - Theoretical Physics


The study of very high transverse-momentum jets will be an important issue at the LHC, in particular since the corresponding cross sections will be considerably larger than at RHIC energies. Jets are expected to provide information on QGP formation, due to the energy loss of fast partons in the medium. Jet cross sections can in principle be compared to simple pQCD calculations, based on the hypothesis of factorization. But often it is useful or even necessary to not only compute the production rate of the very high-p T jets, but in addition the “rest of the event”. The proposed talk is based on recent work, where we try to construct an event generator—fully compatible with pQCD—which allows one to compute complete events, consisting of high-p T jets plus all the other low p T particles produced at the same time. Whereas in “generators of inclusive spectra” like Pythia one may easily trigger on high-p T phenomena, this is not so obvious for “generators of physical events”, where in principle one has to generate a very large number of events in order to finally obtain rare events (like those with a very high-p T jet). We shall discuss how we overcome these difficulties in the framework of the EPOS model.


Multiple Scattering Hard Process Hard Scattering Parton Model DGLAP Evolution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    B. Alessandro et al., ALICE: physics performance report, II. J. Phys. G 32, 1295–2040 (2006) ADSCrossRefGoogle Scholar
  2. 2.
    X.-N. Wang, M. Gyulassy, A systematic study of particle production in p + p (anti-p) collisions via the HIJING model. Phys. Rev. D 45, 844–856 (1992) CrossRefADSGoogle Scholar
  3. 3.
    D.E. Acosta et al., Soft and hard interactions in \(p\bar{p}\) collisions at \(\sqrt{s}=\) 1800 GeV and 630 GeV. Phys. Rev. D 65, 072005 (2002) CrossRefADSGoogle Scholar
  4. 4.
    N. Armesto et al., Heavy ion collisions at the LHC—last call for predictions. J. Phys. G 35, 054001 (2008) CrossRefGoogle Scholar
  5. 5.
    K. Werner, Core–corona separation in ultra-relativistic heavy ion collisions. Phys. Rev. Lett. 98, 152301 (2007) CrossRefADSGoogle Scholar
  6. 6.
    K. Werner, F.-M. Liu, T. Pierog, Parton ladder splitting and the rapidity dependence of transverse momentum spectra in deuteron gold collisions at RHIC. Phys. Rev. C 74, 044902 (2006) CrossRefADSGoogle Scholar
  7. 7.
    S. Ostapchenko, T. Pierog, K. Werner, H.J. Drescher, M. Haldik, Parton-based Gribov–Regge theory. Phys. Rep. 350 (2001) Google Scholar
  8. 8.
    R. Bellwied, Strange particle production mechanisms in proton-proton collisions at rhic. Acta Phys. Hung. A 27, 201–204 (2006) CrossRefGoogle Scholar
  9. 9.
    B.I. Abelev et al., Rapidity and species dependence of particle production at large transverse momentum for d + Au collisions at s(NN)**(1/2) = 200 GeV. Phys. Rev. C 76, 054903 (2007) CrossRefADSGoogle Scholar

Copyright information

© Springer-Verlag / Società Italiana di Fisica 2008

Authors and Affiliations

  1. 1.SUBATECH, Ecole des Mines de NantesUniversité de Nantes, CNRS/IN2P3NantesFrance

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