Search for resonant top quark plus jet production in tt̅ +jets events with the ATLAS detector in pp collisions at √s=7  TeV

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

doi:10.1103/PhysRevD.86.091103

Search for resonant top quark plus jet production in tt̅ +jets events with the ATLAS detector in pp collisions at √s=7 TeV

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

20 Citations (Scopus)

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 t̄q or tq, leading to a resonance within the tt̄+jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7fb ^-1) is used to search for tt̄ 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.

Original language	English
Article number	091103
Journal	Physical Review D (Particles, Fields, Gravitation and Cosmology)
Volume	86
Issue number	9
Number of pages	20
ISSN	1550-7998
DOIs	https://doi.org/10.1103/PhysRevD.86.091103
Publication status	Published - 26 Nov 2012

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Aad, G., Dam, M., Hansen, J. B., Hansen, P. H., Hansen, J. R., Hansen, J. D., Heisterkamp, S. J. F., Boelaert, N. M. P., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, T. C., Xella, S., & Løvschall-Jensen, A. E. (2012). Search for resonant top quark plus jet production in tt̅ +jets events with the ATLAS detector in pp collisions at √s=7 TeV. Physical Review D (Particles, Fields, Gravitation and Cosmology), 86(9), [091103]. https://doi.org/10.1103/PhysRevD.86.091103

Search for resonant top quark plus jet production in tt̅ +jets events with the ATLAS detector in pp collisions at √s=7 TeV. / Aad, G.; Dam, Mogens ; Hansen, Jørgen Beck et al.

In: Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol. 86, No. 9, 091103, 26.11.2012.

Research output: Contribution to journal › Journal article › Research › peer-review

Aad, G, Dam, M , Hansen, JB , Hansen, PH , Hansen, JR , Hansen, JD, Heisterkamp, SJF, Boelaert, NMP, Jørgensen, MD, Klinkby, EB, Mehlhase, S, Nilsson, BS, Petersen, TC , Xella, S & Løvschall-Jensen, AE 2012, 'Search for resonant top quark plus jet production in tt̅ +jets events with the ATLAS detector in pp collisions at √s=7 TeV', Physical Review D (Particles, Fields, Gravitation and Cosmology), vol. 86, no. 9, 091103. https://doi.org/10.1103/PhysRevD.86.091103

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title = "Search for resonant top quark plus jet production in tt̅ +jets events with the ATLAS detector in pp collisions at √s=7 TeV",

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}q or tq, leading to a resonance within the t{\=t}+jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7fb -1) is used to search for t{\=t} 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.",

author = "G. Aad and Mogens Dam and Hansen, {J{\o}rgen Beck} and Hansen, {Peter Henrik} and Hansen, {John Renner} and Hansen, {J{\o}rn Dines} and Heisterkamp, {Simon Johann Franz} and Boelaert, {Nele Maria Philomena} and J{\o}rgensen, {Morten Dam} and Klinkby, {Esben Bryndt} and Sascha Mehlhase and Nilsson, {Bj{\"o}rn Stefan} and Petersen, {Troels Christian} and Stefania Xella and L{\o}vschall-Jensen, {Ask Emil}",

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doi = "10.1103/PhysRevD.86.091103",

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T1 - Search for resonant top quark plus jet production in tt̅ +jets events with the ATLAS detector in pp collisions at √s=7 TeV

AU - Aad, G.

AU - Dam, Mogens

AU - Hansen, Jørgen Beck

AU - Hansen, Peter Henrik

AU - Hansen, John Renner

AU - Hansen, Jørn Dines

AU - Heisterkamp, Simon Johann Franz

AU - Boelaert, Nele Maria Philomena

AU - Jørgensen, Morten Dam

AU - Klinkby, Esben Bryndt

AU - Mehlhase, Sascha

AU - Nilsson, Björn Stefan

AU - Petersen, Troels Christian

AU - Xella, Stefania

AU - Løvschall-Jensen, Ask Emil

PY - 2012/11/26

Y1 - 2012/11/26

N2 - 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 t̄q or tq, leading to a resonance within the tt̄+jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7fb -1) is used to search for tt̄ 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.

AB - 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 t̄q or tq, leading to a resonance within the tt̄+jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7fb -1) is used to search for tt̄ 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.

U2 - 10.1103/PhysRevD.86.091103

DO - 10.1103/PhysRevD.86.091103

M3 - Journal article

SN - 2470-0010

VL - 86

JO - Physical Review D

JF - Physical Review D

IS - 9

M1 - 091103

ER -

Search for resonant top quark plus jet production in tt̅ +jets events with the ATLAS detector in pp collisions at √s=7 TeV

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