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 |η| < 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.
Study of Z boson plus jets events using variables sensitive to double-parton scattering in pp collisions at 13 TeV / Battilana C.; Bonacorsi D.; Borgonovi L.; Brigliadori L.; Campanini R.; Capiluppi P.; Castro A.; Cavallo F.R.; Cuffiani M.; Dallavalle G.M.; Diotalevi T.; Fabbri F.; Fanfani A.; Giacomelli P.; Giommi L.; Grandi C.; Guiducci L.; Meo S.L.; Lunerti L.; Marcellini S.; Masetti G.; Navarria F.L.; Perrotta A.; Primavera F.; Rossi A.M.; Rovelli T.; Siroli G.P.; Albergo S.; Costa S.; Di Mattia A.; Potenza R.; Tricomi A.;. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - ELETTRONICO. - 2021:10(2021), pp. 176.0-176.42. [10.1007/JHEP10(2021)176]
Study of Z boson plus jets events using variables sensitive to double-parton scattering in pp collisions at 13 TeV
Battilana C.;Bonacorsi D.;Borgonovi L.;Castro A.;Cuffiani M.;Diotalevi T.;Fanfani A.;Giommi L.;Guiducci L.;Lunerti L.;Primavera F.;Rovelli T.;Siroli G. P.;
2021
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 |η| < 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.File | Dimensione | Formato | |
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