Title
Development and validation of HERWIG 7 tunes from CMS underlying-event measurements
Document Type
Article
Abstract
This paper presents new sets of parameters (“tunes”) for the underlying-event model of the HERWIG7 event generator. These parameters control the description of multiple-parton interactions (MPI) and colour reconnection in HERWIG7, and are obtained from a fit to minimum-bias data collected by the CMS experiment at s=0.9, 7, and 13Te. The tunes are based on the NNPDF 3.1 next-to-next-to-leading-order parton distribution function (PDF) set for the parton shower, and either a leading-order or next-to-next-to-leading-order PDF set for the simulation of MPI and the beam remnants. Predictions utilizing the tunes are produced for event shape observables in electron-positron collisions, and for minimum-bias, inclusive jet, top quark pair, and Z and W boson events in proton-proton collisions, and are compared with data. Each of the new tunes describes the data at a reasonable level, and the tunes using a leading-order PDF for the simulation of MPI provide the best description of the data.
Department(s)
Physics and Engineering
Publication Title
European Physical Journal C
Volume
81
Issue
4
Publication Date
4-1-2021
DOI
10.1140/epjc/s10052-021-08949-5
ISSN
14346044
E-ISSN
14346052
Recommended Citation
The CMS Collaboration; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; and Hogan, Julie M., "Development and validation of HERWIG 7 tunes from CMS underlying-event measurements" (2021). Physics and Engineering Faculty Publications. 106.
https://spark.bethel.edu/physics-faculty/106
Comments
The CMS Collaboration includes over 100 authors. This record includes the Bethel author and the first 5 authors listed. The full list of authors can be viewed on the downloaded document or at the original publisher's website - https://doi.org/10.1140/epjc/s10052-021-08949-5