KAI-FENG CHEN et al.PAO-TI CHANGRONG-SHYANG LUWEI-SHU HOU2022-04-252022-04-25202114346044https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104366975&doi=10.1140%2fepjc%2fs10052-021-08949-5&partnerID=40&md5=fb946ed0183b5705881f2e96e6f8421fhttps://scholars.lib.ntu.edu.tw/handle/123456789/606553This 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. ? 2021, CERN for the benefit of the CMS collaboration.journal article10.1140/epjc/s10052-021-08949-52-s2.0-85104366975