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

• Main Authors: The CMS Collaboration (Author), Abercrombie, Daniel Robert (Author), Allen, Branden (Author), Azzolini, Virginia (Author), Barbieri, Richard Alexander (Author), Baty, Austin Alan (Author), Bi, Ran (Author), Bierwagen, Katharina (Author), Brandt, Stephanie Akemi (Author), Busza, Wit (Author), Cali, Ivan Amos (Author), D'Alfonso, Mariarosaria (Author), Demiragli, Zeynep (Author), Gomez-Ceballos, Guillelmo (Author), Goncharov, Maxim (Author), Hsu, David (Author), Iiyama, Yutaro (Author), Innocenti, Gian Michele (Author), Klute, Markus (Author), Kovalskyi, Dmytro (Author), Lai, Y.S (Author), Lee, Y.-J (Author), Levin, A. (Author), Luckey Jr, P David (Author), Maier, Benedikt (Author), Marini, Andrea Carlo (Author), McGinn, Christopher Francis (Author), Mironov, Camelia Maria (Author), Narayanan, S. (Author), Niu, Xinmei (Author), Paus, Christoph M. E. (Author), Roland, Christof (Author), Roland, Gunther M (Author), Salfeld-Nebgen, Jakob Maxillian Henry (Author), Stephans, George S. F. (Author), Tatar, Kaya (Author), Velicanu, Dragos Alexandru (Author), Wang, J. (Author), Wang, T.W (Author), Wyslouch, Boleslaw (Author)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: Elsevier BV, 2022-08-17T18:52:26Z.
• Subjects: Article
• Online Access: Get fulltext

 © 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.