Search for resonant t t ¯ tt‾ production in proton-proton collisions at s = 13 √s=13 TeV
Name
Sirunyan2019_Article_SearchForResonantTtMathrmTOver.pdf
Description
Published version
Size
1.31 MB
Format
Adobe PDF
Checksum (MD5)
08f4d1592ac4fa25537fc0e8cb76c5df
Author(s)
The CMS Collaboration
Date Issued
2019
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Version
Final published version
Abstract
© 2019, The Author(s). A search for a heavy resonance decaying into a top quark and antiquark (t t ¯) pair is performed using proton-proton collisions at s=13 TeV. The search uses the data set collected with the CMS detector in 2016, which corresponds to an integrated luminosity of 35.9 fb −1 . The analysis considers three exclusive final states and uses reconstruction techniques that are optimized for top quarks with high Lorentz boosts, which requires the use of nonisolated leptons and jet substructure techniques. No significant excess of events relative to the expected yield from standard model processes is observed. Upper limits on the production cross section of heavy resonances decaying to a t t ¯ pair are calculated. Limits are derived for a leptophobic topcolor Z ′ resonance with widths of 1, 10, and 30%, relative to the mass of the resonance, and exclude masses up to 3.80, 5.25, and 6.65 TeV, respectively. Kaluza-Klein excitations of the gluon in the Randall-Sundrum model are excluded up to 4.55 TeV. To date, these are the most stringent limits on t t ¯ resonances.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
10.1007/JHEP04(2019)031
https://doi.org/10.1007/JHEP04(2019)031
