Open-charm and charm-tagged-jet production with ALICE at LHC

TL;DR

This paper presents recent ALICE measurements of charm production and charm-tagged jets at the LHC, including baryon-to-meson ratios, jet-momentum fractions, parton splittings, and the first direct observation of the dead-cone effect in hadron collisions.

Contribution

It provides new experimental data on charm hadronization and jet structure at 13 TeV, including the first direct measurement of the dead-cone effect at hadron colliders.

Findings

Measured baryon-to-meson ratios for charm hadrons in pp collisions.

Reported jet-momentum fractions for D0 mesons and Lambda_c baryons.

First direct measurement of the dead-cone effect at a hadron collider.

Abstract

The latest results on charm-tagged jets and open-charm production obtained with \mbox{ALICE} at the LHC are presented. The baryon-to-meson ratios for $\mathrm{\Lambda^+_c}$, $\mathrm{\Sigma^{0,+,++}_c}$ and $\mathrm{\Xi^{0,+}_c}$ measured in pp collisions at $\sqrt{s}=13\ \mathrm{TeV}$ are discussed. The measurements of the jet-momentum fraction carried by the $\mathrm{D^0}$ meson and $\mathrm{\Lambda^+_c}$ baryon in pp collisions at $\sqrt{s}=13\ \mathrm{TeV}$ are reported, and the number of leading-parton splittings $n_{SD}$ for $\mathrm{D^0}$-tagged and inclusive jets in pp collisions at $\sqrt{s}=13\ \mathrm{TeV}$ are compared. Finally, the first direct measurement of the dead-cone effect at hadron colliders is shown.