A top quark mass measurement is performed using 35.9 fb - 1 of LHC proton- proton collision data collected with the CMS detector at v s = 13 TeV. The measurement uses the tt all- jets final state. A kinematic fit is performed to reconstruct the decay of the tt system and suppress themultijet 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

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2019). Measurement of the top quark mass in the all-jets final state at sqrt(s) = 13 TeV and combination with the lepton+jets channel. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 79(4) [10.1140/epjc/s10052-019-6788-2].

Measurement of the top quark mass in the all-jets final state at sqrt(s) = 13 TeV and combination with the lepton+jets channel

Benaglia, A.;Beschi, A.;Brivio, F.;Ciriolo, V.;Dinardo, M. E.;Fiorendi, S.;Gennai, S.;Ghezzi, A.;Govoni, P.;Malberti, M.;Monti, F.;Moroni, L.;Paganoni, M.;Ragazzi, S.;de Fatis, T. Tabarelli;Zuolo, D.;Massironi, A.;Gerosa, R.;Lucchini, M. T.;De Guio, F.;
2019

Abstract

A top quark mass measurement is performed using 35.9 fb - 1 of LHC proton- proton collision data collected with the CMS detector at v s = 13 TeV. The measurement uses the tt all- jets final state. A kinematic fit is performed to reconstruct the decay of the tt system and suppress themultijet 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
Articolo in rivista - Articolo scientifico
Physics, LHC, CMS, top quark
English
2019
79
4
313
open
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2019). Measurement of the top quark mass in the all-jets final state at sqrt(s) = 13 TeV and combination with the lepton+jets channel. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 79(4) [10.1140/epjc/s10052-019-6788-2].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/225833
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