Intrinsic transverse momentum in di-hadron correlations
Abstract
We study di-hadron correlations in proton-proton collisions at s = 200 GeV and interpret experimental data in terms of a fragmentation width and a momentum imbalance. A fragmentation width of 580 50 GeV/c is obtained, and the measured momentum imbalance gives an `intrinsic' transverse momentum width of partons in the proton of 2.6 0.2 GeV/c. Consequences to heavy ion collisions are discussed.
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