Search for single production of a vector-like quark via a heavy gluon in the 4b final state with the ATLAS detector in pp collisions at s=8 TeV

G Aad; B. Abbott; J Abdallah; O Abdinov; B Abeloos; R Aben; Torsten Åkesson; Simona Bocchetta; LENE BRYNGEMARK; Caterina Doglioni; Anders Floderus; Anthony Hawkins; Vincent Hedberg; Jenny Ivarsson; Göran Jarlskog; Else Lytken; Ulf Mjörnmark; Oxana Smirnova; Oleksandr Viazlo; ATLAS Collaboration

doi:10.1016/j.physletb.2016.04.061

Search for single production of a vector-like quark via a heavy gluon in the 4b final state with the ATLAS detector in pp collisions at s=8 TeV

G Aad, B. Abbott, J Abdallah, O Abdinov, B Abeloos, R Aben, Torsten Åkesson, Simona Bocchetta, LENE BRYNGEMARK, Caterina Doglioni, Anders Floderus, Anthony Hawkins, Vincent Hedberg, Jenny Ivarsson, Göran Jarlskog, Else Lytken, Ulf Mjörnmark, Oxana Smirnova, Oleksandr Viazlo, ATLAS Collaboration

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Abstract

A search is performed for the process pp→G*→BHb-/B-Hb→Hbb-→bb-bb-, predicted in composite Higgs scenarios, where G* is a heavy colour octet vector resonance and BH a vector-like quark of charge -1/3. The data were obtained from pp collisions at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.5 fb-1, recorded by the ATLAS detector at the LHC. The largest background, multijet production, is estimated using a data-driven method. No significant excess of events with respect to Standard Model predictions is observed, and upper limits on the production cross section times branching ratio are set. Comparisons to the predictions from a specific benchmark model are made, resulting in lower mass limits in the two-dimensional mass plane of mG* vs. mBH. © 2016 The Author.

Original language	English
Pages (from-to)	249-268
Number of pages	20
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	758
DOIs	https://doi.org/10.1016/j.physletb.2016.04.061
Publication status	Published - 2016

Bibliographical note

Cited By :4

Export Date: 29 June 2017

Subject classification (UKÄ)

Subatomic Physics

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10.1016/j.physletb.2016.04.061

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Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R., Åkesson, T., Bocchetta, S., BRYNGEMARK, LENE., Doglioni, C., Floderus, A., Hawkins, A., Hedberg, V., Ivarsson, J., Jarlskog, G., Lytken, E., Mjörnmark, U., Smirnova, O., Viazlo, O., & ATLAS Collaboration (2016). Search for single production of a vector-like quark via a heavy gluon in the 4b final state with the ATLAS detector in pp collisions at s=8 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 758, 249-268. https://doi.org/10.1016/j.physletb.2016.04.061

@article{d3fccc91b8964e209a195058f98d07ed,

title = "Search for single production of a vector-like quark via a heavy gluon in the 4b final state with the ATLAS detector in pp collisions at s=8 TeV",

abstract = "A search is performed for the process pp→G*→BHb-/B-Hb→Hbb-→bb-bb-, predicted in composite Higgs scenarios, where G* is a heavy colour octet vector resonance and BH a vector-like quark of charge -1/3. The data were obtained from pp collisions at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.5 fb-1, recorded by the ATLAS detector at the LHC. The largest background, multijet production, is estimated using a data-driven method. No significant excess of events with respect to Standard Model predictions is observed, and upper limits on the production cross section times branching ratio are set. Comparisons to the predictions from a specific benchmark model are made, resulting in lower mass limits in the two-dimensional mass plane of mG* vs. mBH. {\textcopyright} 2016 The Author.",

author = "G Aad and B. Abbott and J Abdallah and O Abdinov and B Abeloos and R Aben and Torsten {\AA}kesson and Simona Bocchetta and LENE BRYNGEMARK and Caterina Doglioni and Anders Floderus and Anthony Hawkins and Vincent Hedberg and Jenny Ivarsson and G{\"o}ran Jarlskog and Else Lytken and Ulf Mj{\"o}rnmark and Oxana Smirnova and Oleksandr Viazlo and {ATLAS Collaboration}",

note = "Cited By :4 Export Date: 29 June 2017",

year = "2016",

doi = "10.1016/j.physletb.2016.04.061",

language = "English",

volume = "758",

pages = "249--268",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, Åkesson, T, Bocchetta, S, BRYNGEMARK, LENE , Doglioni, C, Floderus, A, Hawkins, A, Hedberg, V, Ivarsson, J, Jarlskog, G , Lytken, E, Mjörnmark, U, Smirnova, O, Viazlo, O & ATLAS Collaboration 2016, 'Search for single production of a vector-like quark via a heavy gluon in the 4b final state with the ATLAS detector in pp collisions at s=8 TeV', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 758, pp. 249-268. https://doi.org/10.1016/j.physletb.2016.04.061

TY - JOUR

T1 - Search for single production of a vector-like quark via a heavy gluon in the 4b final state with the ATLAS detector in pp collisions at s=8 TeV

AU - Aad, G

AU - Abbott, B.

AU - Abdallah, J

AU - Abdinov, O

AU - Abeloos, B

AU - Aben, R

AU - Åkesson, Torsten

AU - Bocchetta, Simona

AU - BRYNGEMARK, LENE

AU - Doglioni, Caterina

AU - Floderus, Anders

AU - Hawkins, Anthony

AU - Hedberg, Vincent

AU - Ivarsson, Jenny

AU - Jarlskog, Göran

AU - Lytken, Else

AU - Mjörnmark, Ulf

AU - Smirnova, Oxana

AU - Viazlo, Oleksandr

AU - ATLAS Collaboration

N1 - Cited By :4 Export Date: 29 June 2017

PY - 2016

Y1 - 2016

N2 - A search is performed for the process pp→G*→BHb-/B-Hb→Hbb-→bb-bb-, predicted in composite Higgs scenarios, where G* is a heavy colour octet vector resonance and BH a vector-like quark of charge -1/3. The data were obtained from pp collisions at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.5 fb-1, recorded by the ATLAS detector at the LHC. The largest background, multijet production, is estimated using a data-driven method. No significant excess of events with respect to Standard Model predictions is observed, and upper limits on the production cross section times branching ratio are set. Comparisons to the predictions from a specific benchmark model are made, resulting in lower mass limits in the two-dimensional mass plane of mG* vs. mBH. © 2016 The Author.

AB - A search is performed for the process pp→G*→BHb-/B-Hb→Hbb-→bb-bb-, predicted in composite Higgs scenarios, where G* is a heavy colour octet vector resonance and BH a vector-like quark of charge -1/3. The data were obtained from pp collisions at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.5 fb-1, recorded by the ATLAS detector at the LHC. The largest background, multijet production, is estimated using a data-driven method. No significant excess of events with respect to Standard Model predictions is observed, and upper limits on the production cross section times branching ratio are set. Comparisons to the predictions from a specific benchmark model are made, resulting in lower mass limits in the two-dimensional mass plane of mG* vs. mBH. © 2016 The Author.

U2 - 10.1016/j.physletb.2016.04.061

DO - 10.1016/j.physletb.2016.04.061

M3 - Article

SN - 0370-2693

VL - 758

SP - 249

EP - 268

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Search for single production of a vector-like quark via a heavy gluon in the 4b final state with the ATLAS detector in pp collisions at s=8 TeV

Abstract

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