PoS - Proceedings of Science
Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Poster Session
Multi-dimensional measurements of parton shower in pp collisions at RHIC
M. Robotková*  on behalf of the STAR collaboration
Full text: pdf
Pre-published on: December 15, 2022
Published on: June 15, 2023
Jets, collimated sprays of hadrons, serve as an experimental tool for studying parton shower evolution. Differential measurements of jet substructure observables enable the exploration of perturbative and non-perturbative QCD processes. The SoftDrop grooming technique is based on removing soft wide-angle radiation and products of this procedure are substructure observables, such as the shared momentum fraction ($z_{\text{g}}$) and groomed jet radius ($R_{\text{g}}$). We present fully corrected correlations between the $z_{\text{g}}$ and $R_{\text{g}}$ at the first split for jets of varying momenta in $p$+$p$ collisions at the center of mass energy $\sqrt{s} = 200$ GeV. To study the evolution along the jet shower, we also present the $z_{\text{g}}$ and $R_{\text{g}}$ observables at the first, second, and third splits for various jet momenta. As these novel measurements are presented in three dimensions, we outline the correction procedure so that it can be used as a template for future multi-differential measurements across all experiments.
DOI: https://doi.org/10.22323/1.414.1183
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.