Artículos de revistas
Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at \sqrt{s}=7 TeV
Fecha
2012-11Registro en:
Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; et al.; Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at \sqrt{s}=7 TeV; Springer; Journal of High Energy Physics; 13; 01; 11-2012; 116-151
1126-6708
CONICET Digital
CONICET
Autor
Aad, G.
Abajyan, T.
Abbott, B.
Abdallah, J.
Abdel Khalek, S.
Alonso, Francisco
Anduaga, Xabier Sebastian
Dova, Maria Teresa
Monticelli, Fernando Gabriel
Tripiana, Martin Fernando
Otero y Garzon, Gustavo Javier
Piegaia, Ricardo Nestor
Romeo, G. A.
Zhuang, X.
Zhuravlov, V.
Zibell, A.
Zieminska, D.
Zimin, N. I.
Zimmermann, R.
Zimmermann, S.
Zimmermann, S.
Ziolkowski, M.
Zitoun, R.
Živković, L.
Zmouchko, V. V.
Zobernig, G.
Zoccoli, A.
Nedden, M. zur
Zutshi, V.
Zwalinski, L.
The ATLAS Collaboration
Resumen
A search for resonances produced in 7 TeV proton-proton collisions and decaying into top-quark pairs is described. In this Letter events where the top-quark decay produces two massive jets with large transverse momenta recorded with the ATLAS detector at the Large Hadron Collider are considered. Two techniques that rely on jet substructure are used to separate top-quark jets from those arising from light quarks and gluons. In addition, each massive jet is required to have evidence of an associated bottom-quark decay. The data are consistent with the Standard Model, and limits can be set on the production cross section times branching fraction of a Z′ boson and a Kaluza-Klein gluon resonance. These limits exclude, at the 95% credibility level, Z′ bosons with masses 0.70-1.00 TeV as well as 1.28-1.32 TeV and Kaluza-Klein gluons with masses 0.70-1.62 TeV.