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Search for resonances decaying to top and bottom quarks with the CDF experiment

Aaltonen, Timo Antero

Physical review letters, 2015-08, Vol.115 (6) [Periódico revisado por pares]

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Título:
Search for resonances decaying to top and bottom quarks with the CDF experiment
Autor: Aaltonen, Timo Antero
É parte de: Physical review letters, 2015-08, Vol.115 (6)
Notas: USDOE Office of Science (SC), High Energy Physics (HEP)
AC02-07CH11359
FERMILAB-PUB-15-123-PPD
Descrição: We report on a search for charged massive resonances decaying to top (t) and bottom (b) quarks in the full data set of proton-antiproton collisions at a center-of-mass energy of √s = 1.96 TeV collected by the CDF II detector at the Tevatron, corresponding to an integrated luminosity of 9.5 fb–1. No significant excess above the standard model background prediction is observed. We set 95% Bayesian credibility mass-dependent upper limits on the heavy charged-particle production cross section times branching ratio to tb. Using a standard model extension with a W' → tb and left-right-symmetric couplings as a benchmark model, we constrain the W' mass and couplings in the 300–900 GeV/c2 range. As a result, the limits presented here are the most stringent for a charged resonance with mass in the range 300–600 GeV/c2 decaying to top and bottom quarks.
Editor: United States: American Physical Society (APS)
Idioma: Inglês

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