Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/21463
Title: Measurement of the cross section for t t ¯ production with additional jets and b jets in pp collisions at √s = 13 TeV
Authors: Sirunyan, AM
Tumasyan, A
Adam, W
Ambrogi, F
Bergauer, T
Dragicevic, M
Erö, J
Escalante Del Valle, A
Flechl, M
Frühwirth, R
Jeitler, M
Krammer, N
Krätschmer, I
Liko, D
Madlener, T
Mikulec, I
Rad, N
Schieck, J
Schöfbeck, R
Spanring, M
Spitzbart, D
Waltenberger, W
Wulz, CE
Zarucki, M
Drugakov, V
Mossolov, V
Suarez Gonzalez, J
Darwish, MR
De Wolf, EA
Di Croce, D
Janssen, X
Lelek, A
Pieters, M
Rejeb Sfar, H
Van Haevermaet, H
Van Mechelen, P
Van Putte, S
Van Remortel, N
Blekman, F
Bols, ES
Chhibra, SS
D’Hondt, J
De Clercq, J
Lontkovskyi, D
Lowette, S
Marchesini, I
Moortgat, S
Python, Q
Skovpen, K
Tavernier, S
Van Doninck, W
Van Mulders, P
Beghin, D
Bilin, B
Clerbaux, B
De Lentdecker, G
Delannoy, H
Dorney, B
Favart, L
Grebenyuk, A
Kalsi, AK
Popov, A
Postiau, N
Starling, E
Thomas, L
Vander Velde, C
Vanlaer, P
Vannerom, D
Cornelis, T
Dobur, D
Khvastunov, I
Niedziela, M
Roskas, C
Tytgat, M
Verbeke, W
Vermassen, B
Vit, M
Bondu, O
Bruno, G
Caputo, C
David, P
Delaere, C
Delcourt, M
Giammanco, A
Lemaitre, V
Prisciandaro, J
Saggio, A
Vidal Marono, M
Vischia, P
Zobec, J
Alves, FL
Alves, GA
Correia Silva, G
Hensel, C
Moraes, A
Rebello Teles, P
Belchior Batista Das Chagas, E
Carvalho, W
Chinellato, J
Coelho, E
Keywords: Hadron-Hadron scattering (experiments);Jets;Top physics
Issue Date: 20-Jul-2020
Publisher: Springer
Citation: Sirunyan, A.M., Tumasyan, A., Adam, W. et al. Measurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at s√ = 13 TeV. J. High Energ. Phys. 2020, 125 (2020).
Abstract: Measurements of the cross section for the production of top quark pairs in association with a pair of jets from bottom quarks (σtt¯bb¯¯¯) and in association with a pair of jets from quarks of any flavor or gluons (σtt¯jj) and their ratio are presented. The data were collected in proton-proton collisions at a center-of-mass energy of 13 TeV by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.9 fb−1. The measurements are performed in a fiducial phase space and extrapolated to the full phase space, separately for the dilepton and lepton+jets channels, where lepton corresponds to either an electron or a muon. The results of the measurements in the fiducial phase space for the dilepton and lepton+jets channels, respectively, are σtt¯jj = 2.36±0.02 (stat)±0.20 (syst) pb and 31.0±0.2 (stat)±2.9 (syst) pb, and for the cross section ratio 0.017 ± 0.001 (stat) ± 0.001 (syst) and 0.020 ± 0.001 (stat) ± 0.001 (syst). The values of σtt¯bb¯¯¯ are determined from the product of the σtt¯jj and the cross section ratio, obtaining, respectively, 0.040±0.002 (stat)±0.005 (syst) pb and 0.62±0.03 (stat)±0.07 (syst) pb. These measurements are the most precise to date and are consistent, within the uncertainties, with the standard model expectations obtained using a matrix element calculation at next-to-leading order in quantum chromodynamics matched to a parton shower.
URI: http://bura.brunel.ac.uk/handle/2438/21463
DOI: http://dx.doi.org/10.1007/JHEP07(2020)125
ISSN: 1126-6708
1029-8479
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

Files in This Item:
File Description SizeFormat 
FullText.pdf647.73 kBAdobe PDFView/Open


Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.