Measurements of $D^{0}$ and $D^{*}$ production in p+p collisions at $\sqrt{s}$ = 510 GeV in STAR experiment

TL;DR

This paper reports measurements of $D^{0}$ and $D^{*}$ meson production in proton-proton collisions at 510 GeV, testing perturbative QCD predictions and providing insights into charm quark production at RHIC.

Contribution

It presents the first detailed measurements of $D^{0}$ and $D^{*}$ mesons at this energy in STAR, including signal extraction methods and background estimation techniques.

Findings

Measured $D^{0}$ and $D^{*}$ production cross-sections.

Compared experimental results with perturbative QCD calculations.

Provided data for charm production at 510 GeV.

Abstract

These proceedings present an investigation into the production of $D^{0}$ and $D^{*}$ mesons as a function of transverse momentum in proton-proton (p+p) collisions at a center-of-mass energy of $\sqrt{s}$ = 510 GeV, in the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). Objective of this analysis is to test the perturbative QCD calculations with the charm-anticharm production cross-sections obtained through $D^{0}$ and $D^{*}$ measurements. This report includes ongoing signal extractions of the $D^{0}$ and $D^{*}$ mesons from minimum bias events recorded during the p+p collisions at $\sqrt{s}$ = 510 GeV at STAR in 2017. Signals were reconstructed through the hadronic decay channels of these mesons. Like-sign combination and track rotation methods have been used to estimate the combinatorial background for $D^{0}$ measurement from $p_{T}$ = 0.0 to 2.1 GeV/$c$. For $D^{*}$, wrong-sign and side band combination of the decay daughters were utilized to reconstruct the combinatorial background from $p_{T}$ = 2.0 to 6.0 GeV/$c$.