Measurements of cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at
The cross sections for the production of tt¯bb¯ and tt¯jj events and their ratio σtt¯bb¯/σtt¯jj are 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¯ 4.0 ± 0.6 (stat) ± 1.3 (syst)pb and σtt¯jj is 184 ± 6 (stat) ± 33 (syst)pb. Here, the measurements are compared with the standard model expectations obtained from a powheg simulation at next-to-leading-order interfaced with pythia.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- The CMS Collaboration
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1437775
- Alternate ID(s):
- OSTI ID: 1371773
- Report Number(s):
- FERMILAB-PUB-17-251-CMS; CMS-TOP-16-010; CERN-EP-2017-069; arXiv:1705.10141; S0370269317309358; PII: S0370269317309358
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Vol. 776 Journal Issue: C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
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