Effect of event selection on jetlike correlation measurement in $d$+Au collisions at $\sqrt{s_{\rm{NN}}}=200$ GeV

TL;DR

This study investigates how event selection criteria influence jetlike correlation measurements in d+Au collisions at 200 GeV, revealing that jetlike yields increase with multiplicity and that non-jet contributions are minimal after correction.

Contribution

It demonstrates the impact of event selection on jetlike correlation measurements and clarifies the absence of a back-to-back ridge in these collisions.

Findings

Jetlike correlated yield increases with event multiplicity.

Non-jet contributions on the away side are minimal after correction.

No significant back-to-back ridge observed in d+Au collisions.

Abstract

Dihadron correlations are analyzed in $\sqrt{s_{_{\rm NN}}} = 200$ GeV $d$+Au collisions classified by forward charged particle multiplicity and zero-degree neutral energy in the Au-beam direction. It is found that the jetlike correlated yield increases with the event multiplicity. After taking into account this dependence, the non-jet contribution on the away side is minimal, leaving little room for a back-to-back ridge in these collisions.