Estimate of cold nuclear matter effects on bottom production in d+Au collisions at $\sqrt{s_{NN}} = 200$ GeV

TL;DR

This paper studies how cold nuclear matter effects influence bottom quark production in d+Au collisions at RHIC, finding no suppression and explaining low-$p_T$ enhancements through shadowing and initial $k_T$ broadening.

Contribution

It provides the first detailed analysis of bottom production modification due to CNM effects at RHIC energies, highlighting the roles of shadowing and $k_T$ broadening.

Findings

Bottom production is not suppressed by CNM effects.

Shadowing and $k_T$ broadening explain low-$p_T$ heavy flavor electron enhancement.

Results align with experimental observations at RHIC.

Abstract

We investigate modification of the bottom quark production due to cold nuclear matter effects (CNM) at mid-rapidity in d+Au collisions at $\sqrt{s_{NN}} = 200$ GeV at RHIC. Our results indicate that bottom production is not suppressed due to CNM effects in those collisions. We also found that shadowing and initial $k_T$ breadboarding for charm quarks explains at low $p_T$ ($p_T < 3$ GeV/c) the enhancement of heavy flavor decay electron yield in d+Au collisions at $\sqrt{s_{NN}} = 200$ GeV compared to p+p.