# 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

May 31, 2020 to June 5, 2020
Online
US/Central timezone

## Jet and Di-jet Underlying Event in p+Au collisions at $\sqrt{s_\mathrm{NN}}$ = 200 GeV at STAR

Jun 2, 2020, 7:30 AM
1h 20m
Online

#### Online

Poster Jets and High Momentum Hadrons

### Speaker

Veronica Verkest (Wayne State University)

### Description

Proton-ion collisions have been included in runs at the LHC and RHIC in addition to proton-proton and heavy ion collisions as a means of studying cold nuclear matter (CNM) effects. These asymmetric systems have yielded some unexpected trends, notably in measurements of nuclear modification factors at different centralities. Detectors at forward/backward rapidity have been used as a proxy for centrality or event activity (EA) in p+Au collisions in order to avoid auto-correlations in mid-rapidity measurements. In this poster, we show correlations of backward-rapidity (Au-going) event activity with mid-rapidity underlying event (UE) in p+Au collisions at $\sqrt{s_\mathrm{NN}}$ = 200 GeV measured with the STAR detector. We present UE measurements and show the trends of UE in relation to EA for high-transverse momentum ($p_{T}$) jet events vs. di-jet events. Additionally, we will study collision kinematics via observables including jet rapidity ($\eta$) and jet $p_{T}$ as a means of investigating the initial hard scattering of partons in these events.

Collaboration (if applicable) STAR Jets and High Momentum Hadrons Poster

### Presentation materials

 https://us02web.zoom.us/j/87900137321 Verkest_HP2020_poster.pdf Verkest_HP2020_posterVideo.mp4