Inclusive D* Meson Cross Sections and D* Jet Correlations in Photoproduction at HERA

TL;DR

This paper measures differential cross sections for D* mesons and their correlations with jets in photoproduction at HERA, providing insights into heavy quark production and testing QCD predictions.

Contribution

It presents new measurements of D* meson and D* jet production cross sections and correlations in photoproduction, comparing results with perturbative QCD models.

Findings

Measured D* meson differential cross sections.

Analyzed D* jet production and correlations.

Compared results with QCD predictions.

Abstract

Differential photoproduction cross sections are measured for events containing D* mesons. The data were taken with the H1 detector at the ep collider HERA and correspond to an integrated luminosity of 51.1 pb-1. The kinematic region covers small photon virtualities Q^2 < 0.01 GeV^2 and photon-proton centre-of-mass energies of 171 < W_gammap < 256 GeV. The details of the heavy quark production process are further investigated in events with one or two jets in addition to the D* meson. Differential cross sections for D* jet production are determined and the correlations between the D* meson and the jet(s) are studied. The results are compared with perturbative QCD predictions applying collinear- or kt -factorisation.