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Event generator tunes obtained from underlying event and multiparton scattering measurements

Abstract: New 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 (pppp) data at s?=7TeVs=7TeVand to UE proton?antiproton (pp¯¯¯pp¯) data from the CDF experiment at lower s?s, are used to study the UE models and constrain their parameters, providing thereby improved predictions for proton?proton collisions at 13TeVTeV. 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 (qq¯¯¯?Z/???qq¯?Z/??? lepton-antilepton+jets) observables at 7 and 8TeVTeV, as well as predictions for MB and UE observables at 13TeVTeV.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: European Physical Journal C, Vol. 76, Num. 3, Art. Num. 155, (2016)

Editorial: Springer New York LLC

 Fecha de publicación: 01/03/2016

Nº de páginas: 52

Tipo de publicación: Artículo de Revista

 DOI: 10.1140/epjc/s10052-016-3988-x

ISSN: 1434-6044,1434-6052

Url de la publicación: https://doi.org/10.1140/epjc/s10052-016-3988-x

Autores/as

KHACHATRYAN, VLADIMIR

JUAN RAMON CASTIÑEIRAS DE SAA

PABLO DE CASTRO MANZANO

JUAN GARCIA FERRERO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

ANA YAIZA RODRIGUEZ MARRERO