Search for resonant t t ¯production in proton-proton collisions at √s=13 TeV
A search for a heavy resonance decaying into a top quark and antiquark (tt) 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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Springer Verlag
2019
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/72611/ http://irep.iium.edu.my/72611/ http://irep.iium.edu.my/72611/ http://irep.iium.edu.my/72611/1/72611_Search%20for%20resonant%20tt%20production_article.pdf http://irep.iium.edu.my/72611/2/72611_Search%20for%20resonant%20tt%20production_scopus.pdf |
| Summary: | A search for a heavy resonance decaying into a top quark and antiquark (tt)
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 tt pair are calculated.
Limits are derived for a leptophobic topcolor Z0
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 tt resonances |
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