Modified dihadron fragmentation functions in hot and nuclear matter.


Journal Article

Medium modification of dihadron fragmentation functions due to gluon bremsstrahlung induced by multiple partonic scattering is studied in both deep-inelastic scattering (DIS) off large nuclei and high-energy heavy-ion collisions within the same framework of twist expansion. The modification for dihadrons is found to closely follow that for single hadrons, leading to a weak nuclear suppression of their ratios in DIS experiments. A mild enhancement of the near-side correlation of two high transverse momentum hadrons with increasing centrality is found in heavy-ion collisions due to trigger bias and the rise in parton energy loss with centrality. Successful comparisons between theory and experiment for multihadron observables in both confining and deconfined media offer comprehensive evidence for partonic energy loss as the mechanism of jet modification in dense matter.

Full Text

Duke Authors

Cited Authors

  • Majumder, A; Wang, E; Wang, X-N

Published Date

  • October 12, 2007

Published In

Volume / Issue

  • 99 / 15

Start / End Page

  • 152301 -

PubMed ID

  • 17995159

Pubmed Central ID

  • 17995159

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/PhysRevLett.99.152301


  • eng

Conference Location

  • United States