Pythia 8 underlying event tune for RHIC energies

Manny Rosales Aguilar; Zilong Chang; Raghav Kunnawalkam Elayavalli; Renee Fatemi; Yang He; Yuanjing Ji; Dmitry Kalinkin; Matthew Kelsey; Isaac Mooney; Veronica Verkest

doi:10.1103/PhysRevD.105.016011

Pythia 8 underlying event tune for RHIC energies

Manny Rosales Aguilar
, Zilong Chang
, Raghav Kunnawalkam Elayavalli
, Renee Fatemi
, Yang He
, Yuanjing Ji
, Dmitry Kalinkin
, Matthew Kelsey
, Isaac Mooney
, Veronica Verkest

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

We report an underlying event tune for the pythia8 Monte Carlo event generator that is applicable for hadron collisions primarily at s ranges available at the Relativistic Heavy-Ion Collider (RHIC). We compare our new pythia8 tuned predictions to midrapidity inclusive π± spectra, jet substructure, Drell-Yan production, and underlying event measurements from RHIC and the Tevatron, as well as underlying event data from the Large Hadron Collider. With respect to the default pythia8 Monash Tune, the new "Detroit"tune shows significant improvements in the description of the experimental data. Additionally, we explore the validity of pythia8 predictions for forward rapidity π in s=200 GeV collisions, where neither tune is able to sufficiently describe the data. We advocate for the new tune to be used for pythia8 studies at current and future RHIC experiments, and discuss future tuning exercises at lower center-of-mass energies, where forward/backward kinematics are essential at the upcoming Electron-Ion Collider.

Original language	English
Article number	016011
Journal	Physical Review D
Volume	105
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.105.016011
State	Published - Jan 1 2022

Bibliographical note

Publisher Copyright:
© 2022 authors. Published by the American Physical Society.

Funding

We would like to thank the STAR collaboration and its management for initiating such a tuning exercise and their support and comments during the tuning process has indelibly contributed to its successful completion. We also like to thank Elke-Caroline Aschenauer and Carl Gagliardi in particular for input during the tuning. Special thanks to Flemming Videbaek for access to BRAHMS data. We express our gratitude to Christian Bierlich for useful discussions throughout this work. We thank the RCF facility at Brookhaven National Laboratory and the Wayne State University high performance computing center for the computational resources used for this work. This work was supported in part by the Office of Nuclear Physics within the U.S. DOE Office of Science, the U.S. National Science Foundation, and the National Natural Science Foundation of China.

Funders
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China
National Science Foundation Office of International Science and Engineering
Horia Hulubei National Institute for Physics and Nuclear Engineering
National Natural Science Foundation of China (NSFC)

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.105.016011

Cite this

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title = "Pythia 8 underlying event tune for RHIC energies",

abstract = "We report an underlying event tune for the pythia8 Monte Carlo event generator that is applicable for hadron collisions primarily at s ranges available at the Relativistic Heavy-Ion Collider (RHIC). We compare our new pythia8 tuned predictions to midrapidity inclusive π± spectra, jet substructure, Drell-Yan production, and underlying event measurements from RHIC and the Tevatron, as well as underlying event data from the Large Hadron Collider. With respect to the default pythia8 Monash Tune, the new {"}Detroit{"}tune shows significant improvements in the description of the experimental data. Additionally, we explore the validity of pythia8 predictions for forward rapidity π in s=200 GeV collisions, where neither tune is able to sufficiently describe the data. We advocate for the new tune to be used for pythia8 studies at current and future RHIC experiments, and discuss future tuning exercises at lower center-of-mass energies, where forward/backward kinematics are essential at the upcoming Electron-Ion Collider.",

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AU - Aguilar, Manny Rosales

AU - Chang, Zilong

AU - Elayavalli, Raghav Kunnawalkam

AU - Fatemi, Renee

AU - He, Yang

AU - Ji, Yuanjing

AU - Kalinkin, Dmitry

AU - Kelsey, Matthew

AU - Mooney, Isaac

AU - Verkest, Veronica

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N2 - We report an underlying event tune for the pythia8 Monte Carlo event generator that is applicable for hadron collisions primarily at s ranges available at the Relativistic Heavy-Ion Collider (RHIC). We compare our new pythia8 tuned predictions to midrapidity inclusive π± spectra, jet substructure, Drell-Yan production, and underlying event measurements from RHIC and the Tevatron, as well as underlying event data from the Large Hadron Collider. With respect to the default pythia8 Monash Tune, the new "Detroit"tune shows significant improvements in the description of the experimental data. Additionally, we explore the validity of pythia8 predictions for forward rapidity π in s=200 GeV collisions, where neither tune is able to sufficiently describe the data. We advocate for the new tune to be used for pythia8 studies at current and future RHIC experiments, and discuss future tuning exercises at lower center-of-mass energies, where forward/backward kinematics are essential at the upcoming Electron-Ion Collider.

AB - We report an underlying event tune for the pythia8 Monte Carlo event generator that is applicable for hadron collisions primarily at s ranges available at the Relativistic Heavy-Ion Collider (RHIC). We compare our new pythia8 tuned predictions to midrapidity inclusive π± spectra, jet substructure, Drell-Yan production, and underlying event measurements from RHIC and the Tevatron, as well as underlying event data from the Large Hadron Collider. With respect to the default pythia8 Monash Tune, the new "Detroit"tune shows significant improvements in the description of the experimental data. Additionally, we explore the validity of pythia8 predictions for forward rapidity π in s=200 GeV collisions, where neither tune is able to sufficiently describe the data. We advocate for the new tune to be used for pythia8 studies at current and future RHIC experiments, and discuss future tuning exercises at lower center-of-mass energies, where forward/backward kinematics are essential at the upcoming Electron-Ion Collider.

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Pythia 8 underlying event tune for RHIC energies

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

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