Search for single b⁎-quark production with the ATLAS detector at √s=7 TeV

ATLAS Collaboration

doi:10.1016/j.physletb.2013.03.016

Search for single b^⁎-quark production with the ATLAS detector at √s=7 TeV

ATLAS Collaboration

Department of Physics

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The results of a search for an excited bottom-quark b^⁎ in pp collisions at s=7 TeV, using 4.7 fb⁻¹ of data collected by the ATLAS detector at the LHC are presented. In the model studied, a single b^⁎-quark is produced through a chromomagnetic interaction and subsequently decays to a W boson and a top quark. The search is performed in the dilepton and lepton + jets final states, which are combined to set limits on b^⁎-quark couplings for a range of b^⁎-quark masses. For a benchmark with unit size chromomagnetic and Standard Model-like electroweak b^⁎ couplings, b^⁎ quarks with masses less than 870 GeV are excluded at the 95% credibility level.

Original language	English
Pages (from-to)	171-189
Number of pages	19
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	721
Issue number	4-5
DOIs	https://doi.org/10.1016/j.physletb.2013.03.016
State	Published - 25 Apr 2013

Keywords

ATLAS
Excited quark
Single top-quark
b

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10.1016/j.physletb.2013.03.016

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@article{ff9193ae1c75484da28000eefe12e3ee,

title = "Search for single b⁎-quark production with the ATLAS detector at √s=7 TeV",

abstract = "The results of a search for an excited bottom-quark b⁎ in pp collisions at s=7 TeV, using 4.7 fb−1 of data collected by the ATLAS detector at the LHC are presented. In the model studied, a single b⁎-quark is produced through a chromomagnetic interaction and subsequently decays to a W boson and a top quark. The search is performed in the dilepton and lepton + jets final states, which are combined to set limits on b⁎-quark couplings for a range of b⁎-quark masses. For a benchmark with unit size chromomagnetic and Standard Model-like electroweak b⁎ couplings, b⁎ quarks with masses less than 870 GeV are excluded at the 95\% credibility level.",

keywords = "ATLAS, Excited quark, Single top-quark, b",

author = "\{ATLAS Collaboration\} and G. Aad and T. Abajyan and B. Abbott and J. Abdallah and \{Abdel Khalek\}, S. and Abdelalim, \{A. A.\} and O. Abdinov and R. Aben and B. Abi and M. Abolins and AbouZeid, \{O. S.\} and H. Abramowicz and H. Abreu and Ochoa, \{M. I.\} and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and Addy, \{T. N.\} and J. Adelman and S. Adomeit and P. Adragna and T. Adye and S. Aefsky and Aguilar-Saavedra, \{J. A.\} and M. Agustoni and Ahlen, \{S. P.\} and F. Ahles and A. Ahmad and M. Ahsan and G. Aielli and {\AA}kesson, \{T. P.A.\} and G. Akimoto and Akimov, \{A. V.\} and Alam, \{M. A.\} and J. Albert and S. Albrand and M. Aleksa and Aleksandrov, \{I. N.\} and F. Alessandria and C. Alexa and G. Alexander and G. Alexandre and T. Alexopoulos and M. Alhroob and M. Aliev and G. Alimonti and J. Alison and Allbrooke, \{B. M.M.\} and Allison, \{L. J.\} and Lee, \{J. S.H.\}",

note = "Publisher Copyright: {\textcopyright} 2013 CERN",

year = "2013",

month = apr,

day = "25",

doi = "10.1016/j.physletb.2013.03.016",

language = "English",

volume = "721",

pages = "171--189",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "4-5",

}

TY - JOUR

T1 - Search for single b⁎-quark production with the ATLAS detector at √s=7 TeV

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abajyan, T.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdelalim, A. A.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - AbouZeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Ochoa, M. I.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Addy, T. N.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adragna, P.

AU - Adye, T.

AU - Aefsky, S.

AU - Aguilar-Saavedra, J. A.

AU - Agustoni, M.

AU - Ahlen, S. P.

AU - Ahles, F.

AU - Ahmad, A.

AU - Ahsan, M.

AU - Aielli, G.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alam, M. A.

AU - Albert, J.

AU - Albrand, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alessandria, F.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Aliev, M.

AU - Alimonti, G.

AU - Alison, J.

AU - Allbrooke, B. M.M.

AU - Allison, L. J.

AU - Lee, J. S.H.

PY - 2013/4/25

Y1 - 2013/4/25

N2 - The results of a search for an excited bottom-quark b⁎ in pp collisions at s=7 TeV, using 4.7 fb−1 of data collected by the ATLAS detector at the LHC are presented. In the model studied, a single b⁎-quark is produced through a chromomagnetic interaction and subsequently decays to a W boson and a top quark. The search is performed in the dilepton and lepton + jets final states, which are combined to set limits on b⁎-quark couplings for a range of b⁎-quark masses. For a benchmark with unit size chromomagnetic and Standard Model-like electroweak b⁎ couplings, b⁎ quarks with masses less than 870 GeV are excluded at the 95% credibility level.

AB - The results of a search for an excited bottom-quark b⁎ in pp collisions at s=7 TeV, using 4.7 fb−1 of data collected by the ATLAS detector at the LHC are presented. In the model studied, a single b⁎-quark is produced through a chromomagnetic interaction and subsequently decays to a W boson and a top quark. The search is performed in the dilepton and lepton + jets final states, which are combined to set limits on b⁎-quark couplings for a range of b⁎-quark masses. For a benchmark with unit size chromomagnetic and Standard Model-like electroweak b⁎ couplings, b⁎ quarks with masses less than 870 GeV are excluded at the 95% credibility level.

KW - ATLAS

KW - Excited quark

KW - Single top-quark

KW - b

UR - https://www.scopus.com/pages/publications/85041994694

U2 - 10.1016/j.physletb.2013.03.016

DO - 10.1016/j.physletb.2013.03.016

M3 - Article

AN - SCOPUS:85041994694

SN - 0370-2693

VL - 721

SP - 171

EP - 189

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

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

IS - 4-5

ER -

Search for single b^⁎-quark production with the ATLAS detector at √s=7 TeV

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Keywords

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