On Mechanism of Charmed c-Quarks Fragmentation in Hadronic Collisions

TL;DR

This paper introduces a modified mechanism for charmed quark fragmentation into D mesons in hadronic collisions, highlighting how valence quark distributions in initial mesons influence the spectra of produced D and D_s mesons.

Contribution

It presents a new fragmentation mechanism accounting for valence quark differences in initial mesons, explaining variations in D meson spectra in different hadronic beams.

Findings

Different inclusive spectra of D and D_s mesons observed in π± and K± beams.

Valence quark distributions significantly affect charmed meson production.

Modified fragmentation mechanism aligns with experimental spectra data.

Abstract

We propose a modification of the mechanism of charmed quarks fragmentation into $D$ mesons in hadronic collisions. It is shown that the distinction in valence quark distributions in the initial $\pi^{\pm}$ and $K^{\pm}$ mesons leads to different inclusive spectra of $D$ and $D_s$ mesons produced in $\pi^{\pm}$ and $K^{\pm}$ beams.