P T andQ2 dependence of multijet production in γγ* collisions

  • N. Arteaga-Romero
  • C. Marimalo
  • P. Kessler
  • S. Ong
  • J. Silva


In the context of a measurement recently performed by the PLUTO Collaboration at PETRA, we have computed the contribution of 2-jet, 3-jet and 4-jet production processes (each involving 2 large-p T jets) in γγ* collisions to the differential cross sectiondσ/(dp T dQ2), whereQ2 is the γ*'s four momentum squared. It results that the total correction to the 2-jet contribution\(\left( {\gamma \gamma ^ * \to q\bar q} \right)\), obtained forp T andQ2 values located in the range 2 GeV<p T <6 GeV and 0.1 GeV2<Q2<12 GeV2 varies rather slowly as a function of those two parameters; it ranges between 30% and 70%. The specific contribution of the higher twist term involving the process\(\gamma \gamma ^ * \to Mq\bar q\) appears to be insignificant. The discrepancy observed between experiment and theory atQ2≲0.3 GeV2 andp T ≃2-3.5 GeV is not explained by our results.


Field Theory Elementary Particle Quantum Field Theory Production Process Particle Acceleration 
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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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • N. Arteaga-Romero
    • 1
  • C. Marimalo
    • 1
  • P. Kessler
    • 1
  • S. Ong
    • 1
  • J. Silva
    • 1
  1. 1.Laboratoire de Physique CorpusculaireCollège de FranceParis Cedex 05France

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