Multiplicity dependence of two-particle azimuthal correlations in pp collisions at the LHC


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Abelev B., Adam J., Adamová D., Adare A., Aggarwal M., Aglieri Rinella G., ...More

Journal of High Energy Physics, vol.2013, no.9, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 2013 Issue: 9
  • Publication Date: 2013
  • Doi Number: 10.1007/jhep09(2013)049
  • Journal Name: Journal of High Energy Physics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Hadron-Hadron Scattering
  • Yıldız Technical University Affiliated: No

Abstract

We present the measurements of particle pair yields per trigger particle obtained from di-hadron azimuthal correlations in pp collisions at = 0.9, 2.76, and 7 TeV recorded with the ALICE detector. The yields are studied as a function of the charged particle multiplicity. Taken together with the single particle yields the pair yields provide information about parton fragmentation at low transverse momenta, as well as on the contribution of multiple parton interactions to particle production. Data are compared to calculations using the PYTHIA6, PYTHIA8, and PHOJET event generators. [Figure not available: see fulltext.] © 2013 CERN for the benefit of the ALICE collaboration.