O ct 2 00 6 From di - hadron correlations to parton intrinsic transverse momentum in proton - proton collisions ⋆


Di-hadron correlations in proton-proton collisions at √ s = 200 GeV are interpreted in terms of a fragmentation width and a momentum imbalance. A fragmentation width of 580 ± 50 GeV/c is obtained, and the momentum imbalance gives an ‘intrinsic’ transverse momentum width of partons in the proton of 2.6 ± 0.2 GeV/c. 


3 Figures and Tables