Measurement of prompt open-charm production cross sections in proton-proton collisions at $\sqrt{s} = $ 13 TeV

TL;DR

This paper reports measurements of prompt open-charm meson production cross sections in proton-proton collisions at 13 TeV, providing data for testing quantum chromodynamics predictions and improving understanding of charm quark production.

Contribution

It presents the first detailed differential cross sections for D mesons at 13 TeV with CMS, comparing results to theoretical models and previous measurements.

Findings

Measured differential cross sections for D*±, D±, D0 mesons.

Results agree with certain QCD predictions within uncertainties.

Provides new data at 13 TeV for charm production studies.

Abstract

The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13 TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb$^{-1}$. The differential production cross sections of the D$^{*\pm}$, D$^\pm$, and D$^0$ ($\overline{\mathrm{D}}^{0}$) mesons are presented in ranges of transverse momentum and pseudorapidity 4 $\lt$ $p_\mathrm{T}$ $\lt$ 100 GeV and $\lvert\eta\rvert$ $\lt$ 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.