This paper presents a search for a new heavy particle produced in association with a top or antitop quark. Two models in which the new heavy particle is a color singlet or a color triplet are considered, decaying, respectively, to (t)over-barq or tq, leading to a resonance within the t(t)over-bar + jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7 fb(-1)) is used to search for t(t)over-bar events produced in association with jets, in which one of the W bosons from the top quarks decays leptonically and the other decays hadronically. The data are consistent with the Standard Model expectation, and a new particle with mass below 430 Gev for both W' boson and color triplet models is excluded at 95% confidence level, assuming unit right-handed coupling.

Search for resonant top quark plus jet production in t(t)over-bar + jets events with the ATLAS detector in pp collisions at root s=7 TeV / Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S.A., Abdelalim, A.A., Abdinov, O., Aben, R., Abi, B., Abolins, M., Abouzeid, O.S., Abramowicz, H., Abreu, H., Acerbi, E., Acharya, B.S., Adamczyk, L., Adams, D.L., Addy, T.N., Adelman, J., Adomeit, S., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 86:(2012), p. 091103. [10.1103/physrevd.86.091103]

Search for resonant top quark plus jet production in t(t)over-bar + jets events with the ATLAS detector in pp collisions at root s=7 TeV

G. Artoni;BAGNAIA, Paolo;BINI, Cesare;S. D. Cecco;DIONISI, Carlo;GAUZZI, Paolo;GENTILE, Simonetta;GIAGU, Stefano;M. Kado;LACAVA, Francesco;LUCI, Claudio;MESSINA, Andrea;A. Policicchio;SOLFAROLI CAMILLOCCI, ELENA;
2012

Abstract

This paper presents a search for a new heavy particle produced in association with a top or antitop quark. Two models in which the new heavy particle is a color singlet or a color triplet are considered, decaying, respectively, to (t)over-barq or tq, leading to a resonance within the t(t)over-bar + jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7 fb(-1)) is used to search for t(t)over-bar events produced in association with jets, in which one of the W bosons from the top quarks decays leptonically and the other decays hadronically. The data are consistent with the Standard Model expectation, and a new particle with mass below 430 Gev for both W' boson and color triplet models is excluded at 95% confidence level, assuming unit right-handed coupling.
2012
01 Pubblicazione su rivista::01a Articolo in rivista
Search for resonant top quark plus jet production in t(t)over-bar + jets events with the ATLAS detector in pp collisions at root s=7 TeV / Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S.A., Abdelalim, A.A., Abdinov, O., Aben, R., Abi, B., Abolins, M., Abouzeid, O.S., Abramowicz, H., Abreu, H., Acerbi, E., Acharya, B.S., Adamczyk, L., Adams, D.L., Addy, T.N., Adelman, J., Adomeit, S., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 86:(2012), p. 091103. [10.1103/physrevd.86.091103]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/518565
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