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

Fakultät für Mathematik und Physik
University of Freiburg
University Bonn
University of Oklahoma
University of São Paulo
Laboratoire de l'Accélérateur Linéaire
Section de Physique
University of Geneva
Azerbaijan Academy of Sciences
University of Amsterdam
Oklahoma State University
Department of Physics and Astronomy
Michigan State University
University of Toronto
Tel Aviv University
Universite Paris-Saclay
Department of Physics and Astronomy
University College London
Sezione di Roma
Abdus Salam International Centre for Theoretical Physics
King's College London
Faculty of Physics and Applied Computer Science
Agh University of Science and Technology Faculty of Computer Science
Brookhaven National Laboratory Physics Department
Department of Physics
Hampton University
Yale University
Fakultät für Physik
Universität München
School of Physics and Astronomy
Queen Mary University of London
Rutherford Appleton Laboratory
Department of Physics
Brandeis University
Lisboa
Departamento de Fisica Teorica y del Cosmos and CAFPE
University of Granada
University of Bern
Boston University
Departments of Physics & Astronomy and Chemistry
Stony Brook University
Physics Department
University of Texas
INFN Roma Tor Vergata
University of Rome “Tor Vergata”
Department of Physics
Lund University
International Center for Elementary Particle Physics and Department of Physics
University of Tokyo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Department of Physics
Royal Holloway University of London
Department of Physics and Astronomy
University of Victoria
Laboratoire de Physique Subatomique et de Cosmologie de Grenoble
European Organization for Nuclear Research
Joint Institute for Nuclear Research, Dubna
Sezione INFN di Milano
Horia Hulubei National Institute of Physics and Nuclear Engineering
Physics Department
National Technical University of Athens
Dipartimento di Chimica
and Physics University of Udine
Department of Physics
Humboldt-Universität zu Berlin
University of Pennsylvania School of Arts and Sciences
Universités Paris VI and VII

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

20 Citations (Scopus)

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
Publication status	Published - 25 Apr 2013
Externally published	Yes

Keywords

ATLAS
Excited quark
Single top-quark
b

Access to Document

10.1016/j.physletb.2013.03.016

Cite this

@article{fdc1df1b200b47119bbedd6f2453cf28,

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 O. Davignon and \{De La Taille\}, C. and O. Simard",

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 - Davignon, O.

AU - De La Taille, C.

AU - Simard, O.

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

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