Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/18040
Title: Measurement of the top quark mass in the all-jets final state at √s=13TeV and combination with the lepton+jets channel
Authors: Sirunyan, AM
Tumasyan, A
Adam, W
Ambrogi, F
Asilar, E
Bergauer, T
Brandstetter, J
Dragicevic, M
Erö, J
Del Valle, AE
Flechl, M
Postiau, N
Starling, E
Thomas, L
Velde, CV
Vanlaer, P
Vannerom, D
Wang, Q
Cornelis, T
Dobur, D
Fagot, A
Gul, M
Khvastunov, I
Poyraz, D
Roskas, C
Trocino, D
Tytgat, M
Verbeke, W
Vermassen, B
Vit, M
Zaganidis, N
Bakhshiansohi, H
Bondu, O
Bruno, G
Caputo, C
David, P
Delaere, C
Delcourt, M
Giammanco, A
Cole, JE
Hobson, PR
Khan, A
Kyberd, P
Mackay, CK
Morton, A
Reid, ID
Teodorescu, L
Zahid, S
Frühwirth, R
Ghete, VM
Hrubec, J
Jeitler, M
Krammer, N
Krätschmer, I
Liko, D
Madlener, T
Mikulec, I
Rad, N
Rohringer, H
Schieck, J
Schöfbeck, R
Spanring, M
Spitzbart, D
Waltenberger, W
Wittmann, J
Wulz, CE
Zarucki, M
Chekhovsky, V
Mossolov, V
Gonzalez, JS
De Wolf, EA
Di Croce, D
Janssen, X
Lauwers, J
Lelek, A
Pieters, M
Van Haevermaet, H
Van Mechelen, P
Van Remortel, N
Zeid, SA
Blekman, F
D Hondt, J
De Clercq, J
Deroover, K
Flouris, G
Lontkovskyi, D
Lowette, S
Marchesini, I
Moortgat, S
Moreels, L
Python, Q
Skovpen, K
Tavernier, S
Van Doninck, W
Van Mulders, P
Van Parijs, I
Beghin, D
Bilin, B
Brun, H
Clerbaux, B
De Lentdecker, G
Delannoy, H
Dorney, B
Fasanella, G
Favart, L
Grebenyuk, A
Kalsi, AK
Lenzi, T
Luetic, J
Issue Date: 2019
Publisher: Springer Nature
Citation: European Physical Journal C, 2019, 79 (4)
Abstract: © 2019, CERN for the benefit of the CMS collaboration. 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 t t ¯ all-jets final state. A kinematic fit is performed to reconstruct the decay of the t t ¯ system and suppress the multijet background. Using the ideogram method, the top quark mass (m t ) 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 t t ¯ lepton+jets and all-jets final states is presented, using the same mass extraction method, and provides an m t measurement of 172.26±0.07(stat+JSF)±0.61(syst)GeV. This is the first combined m t extraction from the lepton+jets and all-jets channels through a single likelihood function.
URI: https://bura.brunel.ac.uk/handle/2438/18040
DOI: https://doi.org/10.1140/epjc/s10052-019-6788-2
ISSN: 1434-6044
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

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