Measurement of the top quark mass in the all-jets final state at √s=13TeV and combination with the lepton+jets channel (CROSBI ID 266957)
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Podaci o odgovornosti
Sirunyan, Albert ; ... ; Đurić, Senka ; Lelas, Damir ; Roguljić, Matej ; 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
CMS Collaboration
engleski
Measurement of the top quark mass in the all-jets final state at √s=13TeV and combination with the lepton+jets channel
A top quark mass measurement is performed using 35.9fb−1 of LHC proton–proton collision data collected with the CMS detector at s√=13TeV. The measurement uses the tt¯ all-jets final state. A kinematic fit is performed to reconstruct the decay of the tt¯ system and suppress the multijet background. Using the ideogram method, the top quark mass (mt) is determined, simultaneously constraining an additional jet energy scale factor (JSF). The resulting value of mt=172.34±0.20(stat+JSF)±0.70(syst)GeV is in good agreement with previous measurements. In addition, a combined measurement that uses the tt¯ lepton+jets and all-jets final states is presented, using the same mass extraction method, and provides an mt measurement of 172.26±0.07(stat+JSF)±0.61(syst)GeV. This is the first combined mt extraction from the lepton+jets and all-jets channels through a single likelihood function.
high energy physics ; experimental particle physics ; LHC ; CMS ; standard model
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Podaci o izdanju
79 (4)
2019.
313
27
objavljeno
1434-6044
1434-6052
10.1140/epjc/s10052-019-6788-2