Title:
First measurements of jet substructure in p+Au collisions at \sqrt{s_{NN}} = 200 GeV at STAR

Abstract:
We present the first inclusive measurements of the invariant and SoftDrop-groomed jet substructure in proton-gold collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV at STAR. The measurements are fully corrected for detector effects, and reported differentially in both the jet transverse momentum and jet radius parameter. We compare the measurements to published data from p+p collisions at the same energy, and to established leading-order Monte Carlo event generators, to investigate potential cold and hot nuclear matter effects on the fragmentation and hadronization of high-$p_{\mathrm{T}}$ jets. We find no significant modification to jet substructure in this small collision system. These measurements complement recent STAR results which demonstrate a dependence of jet production on the event activity measured at forward rapidity, but no final-state modification in the nuclear medium.

PAs:
Isaac Mooney¹, Joern Putschke²
1- Yale University, New Haven, CT
2- Wayne State University, Detroit, MI

Target journal:
Phys. Rev. D

Collaboration review:

GPC:
Chairperson:
Member at large:
English QA:
Code QA:
PA Rep: Isaac Mooney 
PWG Rep:

GPC meetings:
day, date, time
Zoom ID: 
Slides link
Comments

Paper draft:

arXiv link:

Comments on previous drafts:
HardProbes v0: link(s)
etc.
GPC v0: link(s)
etc.
IR v0: link(s)
etc.
PRD v0: link(s)
etc.
 

Paper code directory:
PSNxxxx (link)

HepData:

Analysis note:

Paper proposal talk:
Mar. 28, '24

PWGC preview talk:
Jun. 14, '24

Paper plots:
Fig. 1 (link)
etc.

Public presentations on behalf of the STAR collaboration:
HP - Austin, TX (virtual), June, '20
RHIC-AGS AUM -  Upton, NY (virtual), Oct, '20
DNP - New Orleans, LA (virtual), Oct/Nov, '20

JetCorr presentations:

Apr. 16, '20
May 7, '20
May 14, '20
May 21, '20
May 13, '21
May 27, '21
Sep. 16, '21
Nov. 18, '21