Publication:
Development and validation of HERWIG 7 tunes from CMS underlying-event measurements

Дата
2021
Авторы
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Matveev, V.
Chadeeva, M.
Oskin, A.
Parygin, P.
Polikarpov, S.
Zhemchugov, E.
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Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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© 2021, CERN for the benefit of the CMS collaboration.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.
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Development and validation of HERWIG 7 tunes from CMS underlying-event measurements / Sirunyan, A.M. [et al.] // European Physical Journal C. - 2021. - 81. - № 4. - 10.1140/epjc/s10052-021-08949-5
URI
https://www.doi.org/10.1140/epjc/s10052-021-08949-5
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85104366975&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000639810800002
 https://openrepository.mephi.ru/handle/123456789/23897
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