Direct hadron production in hadronic collisions

François Arleo, Stanley J. Brodsky, Dae Sung Hwang, Anne M. Sickles

Research output: Contribution to journalArticlepeer-review


The scaling behavior of the invariant production cross section is a powerful tool in order to probe the dynamics of particle production. Here, we investigate the scaling properties of large-p hadron, jet and prompt photon production in hadronic collisions by comparing systematically world data to NLO QCD predictions. In the hadron sector a significant discrepancy is reported, while prompt photon and jet production data prove in agreement with leadingtwist expectations. We interpret these results as coming from a non-negligible contribution of higher-twist processes, in which the hadron is produced directly in the hard subprocess. Predictions at RHIC are successfully compared to PHENIX preliminary measurements and LHC predictions are given.

Original languageEnglish (US)
Pages (from-to)81-84
Number of pages4
JournalNuclear Physics B - Proceedings Supplements
Issue number1 C
StatePublished - 2010
Externally publishedYes


  • Hadron production
  • Hadronic colliders
  • Higher twist

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

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