D0 cross section in pp collisions at sqrt{s}=7 TeV, measured with the ALICE experiment

TL;DR

This paper reports the measurement of D0 meson production cross-section in proton-proton collisions at 7 TeV using the ALICE detector, providing data to test pQCD predictions and serve as a reference for heavy-ion collision studies.

Contribution

The paper presents the first measurement of D0 meson cross-section at 7 TeV with detailed analysis procedures and comparison to theoretical pQCD models.

Findings

Preliminary D0 cross-section results in 2-12 GeV/c pT range.

Comparison shows agreement with pQCD predictions within uncertainties.

Provides essential baseline data for heavy-ion collision analysis.

Abstract

The measurement of the cross-section for charm production in pp collisions at the LHC is not only a fundamental reference to investigate medium properties in heavy-ion collisions, but also a key test of pQCD predictions in a new energy domain. The ALICE experiment has measured the D meson production in pp collisions at $\sqrt{s}=7$ TeV. We present the analysis procedure for $\rm D^{0}\to \rm K^{-}\rm \pi^{+}$ and for the calculation of efficiency and acceptance corrections. Finally, we show the preliminary results on $\rm D^0$ cross section in pp collisions at $\sqrt{s}=7$ TeV, measured in the region $2<p_{\rm t}<12$ GeV/$c$ at central rapidity $|y|<0.5$. These results are compared to perturbative QCD predictions.