(CMS Collaboration) Sirunyan, Albert; Đurić, Senka; Lelas, Damir; Godinović, Nikola; Puljak, Ivica; Šćulac, Toni; Mesić, Benjamin; Šuša, Tatjana; Kovač, Marko; Ferenček, Dinko; Antunović, Željko; Starodumov, Andrey; Brigljević, Vuko; Luetić, Jelena; Kadija, Krešo; Woods, Nate (2018) Measurement of the top quark mass with lepton + jets final states using pp collisions at s√=13 TeV. European Physical Journal C: Particles and Fields, 78 . ISSN 1434-6044
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Abstract
The mass of the top quark is measured using a sample of tt¯ events collected by the CMS detector using proton-proton collisions at s√=13 TeV at the CERN LHC. Events are selected with one isolated muon or electron and at least four jets from data corresponding to an integrated luminosity of 35.9fb−1. For each event the mass is reconstructed from a kinematic fit of the decay products to a tt¯ hypothesis. Using the ideogram method, the top quark mass is determined simultaneously with an overall jet energy scale factor (JSF), constrained by the mass of the W boson in qq¯¯¯′ decays. The measurement is calibrated on samples simulated at next-to-leading order matched to a leading-order parton shower. The top quark mass is found to be 172.25±0.08(stat+JSF)±0.62(syst)GeV. The dependence of this result on the kinematic properties of the event is studied and compared to predictions of different models of tt¯ production, and no indications of a bias in the measurements are observed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | High energy physics ; Experimental particle physics ; LHC ; CMS ; Standard Model |
| Subjects: | NATURAL SCIENCES > Physics |
| Divisions: | Division of Experimental Physics |
| Depositing User: | Vuko Brigljević |
| Date Deposited: | 23 Aug 2019 10:37 |
| URI: | http://fulir.irb.hr/id/eprint/4947 |
| DOI: | 10.1140/epjc/s10052-018-6332-9 |
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