Measurements of t ̄t cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at √s = 13 TeV
Author(s)
The CMS Collaboration; Abercrombie, Daniel Robert; Allen, Branden; Azzolini, Virginia; Barbieri, Richard Alexander; Baty, Austin Alan; Bi, Ran; Bierwagen, Katharina; Brandt, Stephanie Akemi; Busza, Wit; Cali, Ivan Amos; D'Alfonso, Mariarosaria; Demiragli, Zeynep; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hsu, David; Iiyama, Yutaro; Innocenti, Gian Michele; Klute, Markus; Kovalskyi, Dmytro; Lai, Y.S.; Lee, Y.-J.; Levin, A.; Luckey Jr, P David; Maier, Benedikt; Marini, Andrea Carlo; McGinn, Christopher Francis; Mironov, Camelia Maria; Narayanan, S.; Niu, Xinmei; Paus, Christoph M. E.; Roland, Christof; Roland, Gunther M; Salfeld-Nebgen, Jakob Maxillian Henry; Stephans, George S. F.; Tatar, Kaya; Velicanu, Dragos Alexandru; Wang, J.; Wang, T.W.; Wyslouch, Boleslaw; ... Show more Show lessAbstract
© 2017 The Author The cross sections for the production of tt¯bb¯ and tt¯jj events and their ratio σtt¯bb¯/σtt¯jjare measured using data corresponding to an integrated luminosity of 2.3 fb−1collected 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 σtt¯bb¯is 4.0±0.6(stat)±1.3(syst) pb and σtt¯jjis 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.
Date issued
2017-11Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physics Letters B
Publisher
Elsevier BV
Citation
Sirunyan, A.M., A. Tumasyan, W. Adam, E. Asilar, T. Bergauer, J. Brandstetter, E. Brondolin, et al. “Measurements Oftt¯cross Sections in Association with b Jets and Inclusive Jets and Their Ratio Using Dilepton Final States in Pp Collisions ats=13TeV.” Physics Letters B 776 (January 2018): 355–378. doi:10.1016/j.physletb.2017.11.043.
Version: Final published version
ISSN
03702693
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