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Event generator tunes obtained from underlying event and multiparton scattering measurements

2016-03-17Journal article Open access
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dc.contributor.authorCMS collaboration (2304 authors)
dc.contributor.authorHollar, Jonathan
dc.contributor.authorCalpas, Betty
dc.contributor.authorNayak, Aruna
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorBeirão Da Cruz E Silva, Cristóvão
dc.contributor.authorDi Francesco, Agostino
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorFerreira Parracho, Pedro Guilherme
dc.contributor.authorGallinaro, Michele
dc.contributor.authorLeonardo, Nuno
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorNguyen, Federico
dc.contributor.authorRodrigues Antunes, Joao
dc.contributor.authorSeixas, Joao
dc.contributor.authorToldaiev, Oleksii
dc.contributor.authorVadruccio, Daniele
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorSilva, Pedro
dc.contributor.authorMusella, Pasquale
dc.contributor.authorPela, Joao
dc.date.accessioned2019-02-04T08:42:04Z
dc.date.available2019-02-04T08:42:04Z
dc.date.issued2016-03-17
dc.date.updated2019-02-04T08:42:04Z
dc.description.abstractNew sets of parameters (“tunes”) for the underlying-event (UE) modelling of the pythia8, pythia6 and herwig++ Monte Carlo event generators are constructed using different parton distribution functions. Combined fits to CMS UE proton–proton ( $\mathrm {p}\mathrm {p}$ ) data at $\sqrt{s} = 7\,\text {TeV} $ and to UE proton–antiproton ( $\mathrm {p}\overline{\mathrm{p}} $ ) data from the CDF experiment at lower $\sqrt{s}$ , are used to study the UE models and constrain their parameters, providing thereby improved predictions for proton–proton collisions at 13 $\,\text {TeV}$ . In addition, it is investigated whether the values of the parameters obtained from fits to UE observables are consistent with the values determined from fitting observables sensitive to double-parton scattering processes. Finally, comparisons are presented of the UE tunes to “minimum bias” (MB) events, multijet, and Drell–Yan ( $ \mathrm{q} \overline{\mathrm{q}} \rightarrow \mathrm{Z}/ \gamma ^* \rightarrow $ lepton-antilepton+jets) observables at 7 and 8 $\,\text {TeV}$ , as well as predictions for MB and UE observables at 13 $\,\text {TeV}$ .
dc.description.versionPeer Reviewed
dc.identifierEur.Phys.J. C76 (2016) 155 Eur. Phys. J. C 76 (2016) 155; DOI 10.1140/epjc/s10052-016-3988-x
dc.identifier.urihttp://dx.doi.org/10.1140/epjc/s10052-016-3988-x
dc.identifier.urihttp://hdl.handle.net/10400.26/26980
dc.language.isoeng
dc.titleEvent generator tunes obtained from underlying event and multiparton scattering measurements
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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