Jet Properties from Di-hadron Correlations in p+p Collisions at s=200Â GeV

An analysis of high pT hadron spectra associated with high pT π0 particles in p+p collisions at s=200 GeV is presented. The shape of the azimuthal angular correlation is used to determine the value of partonic intrinsic momentum 〈kT2〉=2.68±0.07(stat)±0.34(sys) GeV/c. The effect of kT-smearing of inclusive π0 cross section is discussed.