Development and validation of HERWIG 7 tunes from CMS underlying-event measurements
| Parent link: | European Physical Journal C Vol. 81, iss. 4.— 2021.— [312, 47 p.] |
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| Corporate Author: | |
| Other Authors: | , , , , , , , |
| Summary: | Title screen 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 =0.9s=0.9, 7, and 13TeV. 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. |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-08949-5 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664667 |