Production of associated $\chi_b$ and open charm at the LHC

TL;DR

This paper investigates the production of $$ and open charm at the LHC using single parton scattering, highlighting the importance of this process for understanding other production mechanisms.

Contribution

It provides a detailed analysis of $ + car c$ production and the impact of feed-down effects, emphasizing the need for precise single parton scattering studies.

Findings

Feed-down from $$ states accounts for a few percent of the total cross section.

Differential distribution shapes are similar to LHCb results, except for azimuthal asymmetry.

Single parton scattering is crucial for isolating other production channels.

Abstract

In the present paper we study the production of $\chi_b + c\bar c$ at the LHC within single parton scattering approach. A special attention payed to the feed-down from $\chi_b$ states to the associated $\Upsilon + c\bar c$ production, which was recently studied by the LHCb. We have found that this feed-down is about percents of the total cross section seen in the experiment. It is shown that the shapes of the differential distributions are almost same as found by the LHCb except the azimuthal asymmetry, which is almost flat in the experiment. We conclude that the precise study of the single parton scattering contributions is necessary for the correct isolation of other possible production channels such as double parton scattering.