Jet properties from di-hadron correlations in p+p collisions at s**(1/2) = 200-GeV

TL;DR

This paper analyzes di-hadron correlations in proton-proton collisions at 200 GeV to extract jet properties and understand partonic intrinsic momentum effects on high transverse momentum hadron production.

Contribution

It provides a measurement of the partonic intrinsic momentum from azimuthal correlations in p+p collisions at 200 GeV, offering insights into jet formation and kT-smearing effects.

Findings

Measured intrinsic partonic momentum $\sqrt{\left<k^2_T ight>} = 2.68 ext{ GeV/c}$

Analyzed azimuthal correlations to determine jet properties

Discussed impact of kT-smearing on inclusive $\pi^0$ cross sections

Abstract

An analysis of high pT hadron spectra associated with high pT $\pi^0$ particles in p+p collisions at s**(1/2) = 200-GeV is presented. The shape of the azimuthal angular correlation is used to determine the value of partonic intrinsic momentum $\sqrt{\left<k^2_T\right>} = 2.68 \pm 0.07(\rm stat) \pm 0.34(\rm sys)$ GeV/c. The effect of kT-smearing of inclusive $\pi^0$ cross section is discussed.