Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at root s=7 TeV

G. Aad; T. Abajyan; B. Abbott; Mogens Dam; Jørgen Beck Hansen; Peter Henrik Hansen; Jørn Dines Hansen; John Renner Hansen; Nele Maria Philomena Boelaert; Ask Emil Løvschall-Jensen; Esben Bryndt Klinkby; Sascha Mehlhase; Morten Dam Jørgensen; Simon Johann Franz Heisterkamp; Björn Stefan Nilsson; Troels Christian Petersen; Stefania Xella

doi:10.1007/JHEP01(2013)116

Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at root s=7 TeV

G. Aad, T. Abajyan, B. Abbott, Mogens Dam, Jørgen Beck Hansen, Peter Henrik Hansen, Jørn Dines Hansen, John Renner Hansen, Nele Maria Philomena Boelaert, Ask Emil Løvschall-Jensen, Esben Bryndt Klinkby, Sascha Mehlhase, Morten Dam Jørgensen, Simon Johann Franz Heisterkamp, Björn Stefan Nilsson, Troels Christian Petersen, Stefania Xella

Experimental Particle Physics

57 Citations (Scopus)

Abstract

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.

Original language	English
Article number	116
Journal	Journal of High Energy Physics (Online)
Volume	2013
Issue number	1
ISSN	1126-6708
DOIs	https://doi.org/10.1007/JHEP01(2013)116
Publication status	Published - 1 Jan 2013

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Aad, G., Abajyan, T., Abbott, B., Dam, M., Hansen, J. B., Hansen, P. H., Hansen, J. D., Hansen, J. R., Boelaert, N. M. P., Løvschall-Jensen, A. E., Klinkby, E. B., Mehlhase, S., Jørgensen, M. D., Heisterkamp, S. J. F., Nilsson, B. S., Petersen, T. C., & Xella, S. (2013). Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at root s=7 TeV. Journal of High Energy Physics (Online), 2013(1), Article 116. https://doi.org/10.1007/JHEP01(2013)116

Aad, G, Abajyan, T, Abbott, B, Dam, M , Hansen, JB , Hansen, PH , Hansen, JD , Hansen, JR, Boelaert, NMP, Løvschall-Jensen, AE, Klinkby, EB, Mehlhase, S, Jørgensen, MD, Heisterkamp, SJF, Nilsson, BS, Petersen, TC & Xella, S 2013, 'Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at root s=7 TeV', Journal of High Energy Physics (Online), vol. 2013, no. 1, 116. https://doi.org/10.1007/JHEP01(2013)116

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title = "Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at root s=7 TeV",

abstract = "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.",

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AU - Aad, G.

AU - Abajyan, T.

AU - Abbott, B.

AU - Dam, Mogens

AU - Hansen, Jørgen Beck

AU - Hansen, Peter Henrik

AU - Hansen, Jørn Dines

AU - Hansen, John Renner

AU - Boelaert, Nele Maria Philomena

AU - Løvschall-Jensen, Ask Emil

AU - Klinkby, Esben Bryndt

AU - Mehlhase, Sascha

AU - Jørgensen, Morten Dam

AU - Heisterkamp, Simon Johann Franz

AU - Nilsson, Björn Stefan

AU - Petersen, Troels Christian

AU - Xella, Stefania

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N2 - 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.

AB - 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.

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DO - 10.1007/JHEP01(2013)116

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SN - 1126-6708

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JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

IS - 1

M1 - 116

ER -

Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at root s=7 TeV

Abstract

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