Published January 1, 2021
| Version v1
Journal article
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Study of Z boson plus jets events using variables sensitive to double-parton scattering in pp collisions at 13 TeV
Creators
- Tumasyan, A.1
- Adam, W.2
- Andrejkovic, J. W.2
- Bergauer, T.2
- Chatterjee, S.2
- Dragicevic, M.2
- Del Valle, A. Escalante2
- Fruhwirth, R.
- Jeitler, M.
- Krammer, N.2
- Lechner, L.2
- Liko, D.2
- Mikulec, I2
- Paulitsch, P.2
- Pitters, F. M.2
- Schieck, J.
- Schofbeck, R.2
- Spanring, M.2
- Templ, S.2
- Waltenberger, W.2
- Waltenberger, W.2
- 1. Yerevan Phys Inst, Yerevan, Armenia
- 2. Inst Hochenergiephys, Vienna, Austria
Description
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 root s = 13TeV, 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 vertical bar eta vertical bar < 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.
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