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Search for anomalous $\boldmath{Wtb}$ couplings in single top quark production

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Search for anomalous $\boldmath{Wtb}$ couplings in single top quark production. / Collaboration, D0; Bertram, Iain; Borissov, Guennadi et al.
In: Physical review letters, Vol. 101, No. 22, 221801, 25.11.2008.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Collaboration D, Bertram I, Borissov G, Fox H, Williams M, Ratoff P et al. Search for anomalous $\boldmath{Wtb}$ couplings in single top quark production. Physical review letters. 2008 Nov 25;101(22):221801. doi: 10.1103/PhysRevLett.101.221801

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Collaboration, D0 ; Bertram, Iain ; Borissov, Guennadi et al. / Search for anomalous $\boldmath{Wtb}$ couplings in single top quark production. In: Physical review letters. 2008 ; Vol. 101, No. 22.

Bibtex

@article{68dc47b87dc449c6860a57fd5b386f30,
title = "Search for anomalous $\boldmath{Wtb}$ couplings in single top quark production",
abstract = "In 0.9 fb$^{-1}$ of $p \bar p$ collisions, D0 has observed an excess of events with an isolated lepton, missing transve rse momentum, and two to four jets. This excess is consistent with single top quark production. We examine these data to study the Lorentz structure of the $Wtb$ coupling. The standard model predicts a left-handed vector coupling at the $Wt b$ vertex. The most general lowest dimension, CP-conserving Lagrangian admits right-handed vector and left- or right-h anded tensor couplings as well. We find that the data prefer the left-handed vector coupling and set upper limits on the anomalous couplings. These are the first direct constraints on a general $Wtb$ interaction and the first direct limits on left- and right-handed tensor couplings.",
author = "D0 Collaboration and Iain Bertram and Guennadi Borissov and Harald Fox and Mark Williams and Peter Ratoff and Peter Love and Andre Sopczak and Alexander Rakitin",
note = "{\textcopyright} 2008 The American Physical Society 7 pages, 4 figures",
year = "2008",
month = nov,
day = "25",
doi = "10.1103/PhysRevLett.101.221801",
language = "English",
volume = "101",
journal = "Physical review letters",
issn = "1079-7114",
publisher = "American Physical Society",
number = "22",

}

RIS

TY - JOUR

T1 - Search for anomalous $\boldmath{Wtb}$ couplings in single top quark production

AU - Collaboration, D0

AU - Bertram, Iain

AU - Borissov, Guennadi

AU - Fox, Harald

AU - Williams, Mark

AU - Ratoff, Peter

AU - Love, Peter

AU - Sopczak, Andre

AU - Rakitin, Alexander

N1 - © 2008 The American Physical Society 7 pages, 4 figures

PY - 2008/11/25

Y1 - 2008/11/25

N2 - In 0.9 fb$^{-1}$ of $p \bar p$ collisions, D0 has observed an excess of events with an isolated lepton, missing transve rse momentum, and two to four jets. This excess is consistent with single top quark production. We examine these data to study the Lorentz structure of the $Wtb$ coupling. The standard model predicts a left-handed vector coupling at the $Wt b$ vertex. The most general lowest dimension, CP-conserving Lagrangian admits right-handed vector and left- or right-h anded tensor couplings as well. We find that the data prefer the left-handed vector coupling and set upper limits on the anomalous couplings. These are the first direct constraints on a general $Wtb$ interaction and the first direct limits on left- and right-handed tensor couplings.

AB - In 0.9 fb$^{-1}$ of $p \bar p$ collisions, D0 has observed an excess of events with an isolated lepton, missing transve rse momentum, and two to four jets. This excess is consistent with single top quark production. We examine these data to study the Lorentz structure of the $Wtb$ coupling. The standard model predicts a left-handed vector coupling at the $Wt b$ vertex. The most general lowest dimension, CP-conserving Lagrangian admits right-handed vector and left- or right-h anded tensor couplings as well. We find that the data prefer the left-handed vector coupling and set upper limits on the anomalous couplings. These are the first direct constraints on a general $Wtb$ interaction and the first direct limits on left- and right-handed tensor couplings.

U2 - 10.1103/PhysRevLett.101.221801

DO - 10.1103/PhysRevLett.101.221801

M3 - Journal article

VL - 101

JO - Physical review letters

JF - Physical review letters

SN - 1079-7114

IS - 22

M1 - 221801

ER -