@article{f4a8d1a2d27e4aaf83f8f539743c84a2,
title = "Underlying event measurements in p+p collisions at s =200 GeV at RHIC",
abstract = "Particle production sensitive to nonfactorizable and nonperturbative processes that contribute to the underlying event associated with a high transverse momentum (pT) jet in proton+proton collisions at s=200 GeV is studied with the STAR detector. Each event is divided into three regions based on the azimuthal angle with respect to the highest-pT jet direction: In the leading jet direction ({"}Toward{"}), opposite to the leading jet ({"}Away{"}), and perpendicular to the leading jet ({"}Transverse{"}). In the Transverse region, the average charged particle density is found to be between 0.4 and 0.6",
author = "J. Adam and L. Adamczyk and Adams, \{J. R.\} and Adkins, \{J. K.\} and S. Kabana and \{STAR Collaboration\}",
note = "Publisher Copyright: {\textcopyright}, between 0.5 and 0.7 GeV/c for particles with pT>0.2 GeV/c at mid-pseudorapidity (|η|<1) and jet pT>15 GeV/c. Both average particle density and {\textcopyright} depend weakly on the leading jet pT. Closer inspection of the Transverse region hints that contributions to the underlying event from initial- A nd final-state radiation are significantly smaller in these collisions than at the higher energies, up to 13 TeV, recorded at the LHC. Underlying event measurements associated with a high-pT jet will contribute to our understanding of QCD processes at hard and soft scales at RHIC energies, as well as provide constraints to modeling of underlying event dynamics. {\textcopyright} 2020 American Physical Society.",
year = "2020",
month = mar,
day = "1",
doi = "10.1103/PhysRevD.101.052004",
language = "English",
volume = "101",
journal = "Physical Review D",
issn = "2470-0010",
number = "5",
}