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Study of Z boson plus jets events using variables sensitive to double-parton scattering in pp collisions at 13 TeV

Abstract: ABSTRACT: Double-parton scattering is investigated using events with a Z boson and jets. The Z boson is reconstructed using only the dimuon channel. The measurements are performed with proton-proton collision data recorded by the CMS experiment at the LHC at s? = 13 TeV, corresponding to an integrated luminosity of 35.9 fb?1 collected in the year 2016. Differential cross sections of Z+ ?1 jet and Z+ ?2 jets are measured with transverse momentum of the jets above 20 GeV and pseudorapidity |?| < 2.4. Several distributions with sensitivity to double-parton scattering effects are measured as functions of the angle and the transverse momentum imbalance between the Z boson and the jets. The measured distributions are compared with predictions from several event generators with different hadronization models and different parameter settings for multiparton interactions. The measured distributions show a dependence on the hadronization and multiparton interaction simulation parameters, and are important input for future improvements of the simulations.

 Fuente: Journal of High Energy Physics, Vol. 2021, Num.10, Art. Num. 176

 Editorial: Springer Verlag

 Fecha de publicación: 21/10/2021

 Nº de páginas: 43

 Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP10(2021)176

 ISSN: 1126-6708,1029-8479

 Url de la publicación: https://doi.org/10.1007/JHEP10(2021)176