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- W3122710918 abstract "A top quark mass measurement is performed using $$35.9{,text {fb}^{-1}} $$ of LHC proton–proton collision data collected with the CMS detector at $$sqrt{s}=13,text {TeV} $$ . The measurement uses the $${mathrm {t}overline{mathrm {t}}}$$ all-jets final state. A kinematic fit is performed to reconstruct the decay of the $${mathrm {t}overline{mathrm {t}}}$$ system and suppress the multijet background. Using the ideogram method, the top quark mass ( $$m_{mathrm {t}}$$ ) is determined, simultaneously constraining an additional jet energy scale factor ( $$text {JSF}$$ ). The resulting value of $$m_{mathrm {t}} =172.34pm 0.20,text {(stat+JSF)} pm 0.70,text {(syst)} ,text {GeV} $$ is in good agreement with previous measurements. In addition, a combined measurement that uses the $${mathrm {t}overline{mathrm {t}}}$$ lepton+jets and all-jets final states is presented, using the same mass extraction method, and provides an $$m_{mathrm {t}}$$ measurement of $$172.26pm 0.07,text {(stat+JSF)} pm 0.61,text {(syst)} ,text {GeV} $$ . This is the first combined $$m_{mathrm {t}}$$ extraction from the lepton+jets and all-jets channels through a single likelihood function." @default.
- W3122710918 created "2021-02-01" @default.
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