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 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 (SM) 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 SM extension with a W0 → tb and left-right-symmetric couplings as a benchmark model, we constrain the W0 → tb mass and couplings in the 300 to 900 GeV/c2 range. 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.

Search for resonances decaying to top and bottom quarks with the CDF experiment / Aaltonen, T., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Anza, F., Apollinari, G., Appel, J.A., Arisawa, T., Artikov, A., Asaadi, J., Ashmanskas, W., Auerbach, B., Aurisano, A., Azfar, F., Badgett, W., Bae, T., Barbaro Galtieri, A., Barnes, V.E., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 115:6(2015). [10.1103/PhysRevLett.115.061801]

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

GIAGU, Stefano;IORI, Maurizio;MARGAROLI, Fabrizio;
2015

Abstract

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 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 (SM) 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 SM extension with a W0 → tb and left-right-symmetric couplings as a benchmark model, we constrain the W0 → tb mass and couplings in the 300 to 900 GeV/c2 range. 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.
2015
Proton-antiproton collisions; top and bottom quarks; Tevatron; CDF II detector
01 Pubblicazione su rivista::01a Articolo in rivista
Search for resonances decaying to top and bottom quarks with the CDF experiment / Aaltonen, T., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Anza, F., Apollinari, G., Appel, J.A., Arisawa, T., Artikov, A., Asaadi, J., Ashmanskas, W., Auerbach, B., Aurisano, A., Azfar, F., Badgett, W., Bae, T., Barbaro Galtieri, A., Barnes, V.E., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 115:6(2015). [10.1103/PhysRevLett.115.061801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/839107
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