Title: | Measurements of tt¯ cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at s=13TeV |
Authors: | Tumasyan, A Adam, W Asilar, E Bergauer, T Brandstetter, J Brondolin, E Dragicevic, M Erö, J Flechl, M Friedl, M Frühwirth, R Ghete, VM Hörmann, N Hrubec, J Jeitler, M König, A Krätschmer, I Liko, D Matsushita, T Mikulec, I Rabady, D Rad, N Rohringer, H Schieck, J Strauss, J Waltenberger, W Wulz, CE Chekhovsky, V Mossolov, V Suarez Gonzalez, J Shumeiko, N Alderweireldt, S De Wolf, EA Janssen, X Lauwers, J Van De Klundert, M Van Haevermaet, H Van Mechelen, P Van Remortel, N Van Spilbeeck, A Abu Zeid, S Blekman, F D'Hondt, J De Bruyn, I De Clercq, J Deroover, K Lowette, S Moortgat, S Moreels, L Olbrechts, A Python, Q Skovpen, K Tavernier, S Van Doninck, W Van Mulders, P Van Parijs, I Brun, H Clerbaux, B De Lentdecker, G Delannoy, H Fasanella, G Favart, L Goldouzian, R Grebenyuk, A Karapostoli, G Lenzi, T Luetic, J Maerschalk, T Marinov, A Randle-conde, A Seva, T Vander Velde, C Vanlaer, P Vannerom, D Yonamine, R Zenoni, F Zhang, F Cimmino, A Cornelis, T Dobur, D Fagot, A Gul, M Khvastunov, I Poyraz, D Salva, S Schöfbeck, R Tytgat, M Van Driessche, W Verbeke, W Zaganidis, N Bakhshiansohi, H Bondu, O Brochet, S Bruno, G Caudron, A De Visscher, S Delaere, C |
Citation: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2018, 776 pp. 355 - 378 |
Abstract: | © 2017 The Author The cross sections for the production of tt¯bb¯ and tt¯jj events and their ratio σ tt¯bb¯ /σ tt¯jj are measured using data corresponding to an integrated luminosity of 2.3 fb −1 collected in pp collisions at s=13 TeV with the CMS detector at the LHC. Events with two leptons (e or μ) and at least four reconstructed jets, including at least two identified as b quark jets, in the final state are selected. In the full phase space, the measured ratio is 0.022±0.003(stat)±0.006(syst), the cross section σ tt¯bb¯ is 4.0±0.6(stat)±1.3(syst) pb and σ tt¯jj is 184±6(stat)±33(syst) pb. The measurements are compared with the standard model expectations obtained from a POWHEG simulation at next-to-leading-order interfaced with PYTHIA. |
URI: | http://bura.brunel.ac.uk/handle/2438/15612 |
DOI: | http://dx.doi.org/10.1016/j.physletb.2017.11.043 |
ISSN: | 0370-2693 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers
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