Search for resonant tt¯ production in proton-proton collisions at √s = 13 TeV

Show simple item record CMS Collaboration Buccilli, A. Cooper, S.I. Henderson, C. Rumerio, P. West, C. 2022-08-02T15:20:44Z 2022-08-02T15:20:44Z 2019
dc.identifier.citation Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J., Dragicevic, M., Erö, J., Escalante Del Valle, A., Flechl, M., Frühwirth, R., Ghete, V. M., Hrubec, J., Jeitler, M., Krammer, N., Krätschmer, I., Liko, D., … Woods, N. (2019). Search for resonant $\mathrm{t}\overline{\mathrm{t}}$ production in proton-proton collisions at $ \sqrt{s}=13 $ TeV. In Journal of High Energy Physics (Vol. 2019, Issue 4). Springer Science and Business Media LLC. en_US
dc.description.abstract A search for a heavy resonance decaying into a top quark and antiquark \(\left(t\overline{t}\right)\) pair is performed using proton-proton collisions at \(\sqrt{s}=13\) 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 \(t\overline{t}\) 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 \(t\overline{t}\) resonances. en_US
dc.format.mimetype application/pdf
dc.language English
dc.subject High Energy Physics - Experiment en_US
dc.subject Beyond Standard Model en_US
dc.subject Hadron-Hadron scattering (experiments) en_US
dc.title Search for resonant tt¯ production in proton-proton collisions at √s = 13 TeV en_US
dc.type text

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