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  • PhysRevLett.108.041805

    Rights statement: Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2012 CERN, for the ATLAS Collaboration

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Search for new phenomena in tt¯ events with large missing transverse momentum in proton-proton collisions at s√=7  TeV with the ATLAS detector

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Search for new phenomena in tt¯ events with large missing transverse momentum in proton-proton collisions at s√=7  TeV with the ATLAS detector. / The ATLAS collaboration.
In: Physical review letters, Vol. 108, No. 4, 041805, 26.01.2012.

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The ATLAS collaboration. Search for new phenomena in tt¯ events with large missing transverse momentum in proton-proton collisions at s√=7  TeV with the ATLAS detector. Physical review letters. 2012 Jan 26;108(4):041805. doi: 10.1103/PhysRevLett.108.041805

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@article{eafc5e0e6dc94574a9e7c3cd0acd0ac0,
title = "Search for new phenomena in tt¯ events with large missing transverse momentum in proton-proton collisions at s√=7  TeV with the ATLAS detector",
abstract = "A search for new phenomena in tt¯ events with large missing transverse momentum in proton-proton collisions at a center-of-mass energy of 7 TeV is presented. The measurement is based on 1.04  fb−1 of data collected with the ATLAS detector at the LHC. Contributions to this final state may arise from a number of standard model extensions. The results are interpreted in terms of a model where new top-quark partners are pair produced and each decay to an on-shell top (or antitop) quark and a long-lived undetected neutral particle. The data are found to be consistent with standard model expectations. A limit at 95% confidence level is set excluding a cross section times branching ratio of 1.1 pb for a top-partner mass of 420 GeV and a neutral particle mass less than 10 GeV. In a model of exotic fourth generation quarks, top-partner masses are excluded up to 420 GeV and neutral particle masses up to 140 GeV.",
author = "Adam Barton and Guennadi Borissov and Eva Bouhova-Thacker and Timothy Brodbeck and James Catmore and Alexandre Chilingarov and Ruth Davidson and {de Mora}, Lee and Harald Fox and Robert Henderson and Gareth Hughes and Jones, {Roger William Lewis} and Vakhtang Kartvelishvili and Robin Long and Peter Love and Peter Ratoff and Maria Smizanska and James Walder and {The ATLAS collaboration}",
note = "Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article{\textquoteright}s title, journal citation, and DOI. {\textcopyright} 2012 CERN, for the ATLAS Collaboration",
year = "2012",
month = jan,
day = "26",
doi = "10.1103/PhysRevLett.108.041805",
language = "English",
volume = "108",
journal = "Physical review letters",
issn = "1079-7114",
publisher = "American Physical Society",
number = "4",

}

RIS

TY - JOUR

T1 - Search for new phenomena in tt¯ events with large missing transverse momentum in proton-proton collisions at s√=7  TeV with the ATLAS detector

AU - Barton, Adam

AU - Borissov, Guennadi

AU - Bouhova-Thacker, Eva

AU - Brodbeck, Timothy

AU - Catmore, James

AU - Chilingarov, Alexandre

AU - Davidson, Ruth

AU - de Mora, Lee

AU - Fox, Harald

AU - Henderson, Robert

AU - Hughes, Gareth

AU - Jones, Roger William Lewis

AU - Kartvelishvili, Vakhtang

AU - Long, Robin

AU - Love, Peter

AU - Ratoff, Peter

AU - Smizanska, Maria

AU - Walder, James

AU - The ATLAS collaboration

N1 - Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2012 CERN, for the ATLAS Collaboration

PY - 2012/1/26

Y1 - 2012/1/26

N2 - A search for new phenomena in tt¯ events with large missing transverse momentum in proton-proton collisions at a center-of-mass energy of 7 TeV is presented. The measurement is based on 1.04  fb−1 of data collected with the ATLAS detector at the LHC. Contributions to this final state may arise from a number of standard model extensions. The results are interpreted in terms of a model where new top-quark partners are pair produced and each decay to an on-shell top (or antitop) quark and a long-lived undetected neutral particle. The data are found to be consistent with standard model expectations. A limit at 95% confidence level is set excluding a cross section times branching ratio of 1.1 pb for a top-partner mass of 420 GeV and a neutral particle mass less than 10 GeV. In a model of exotic fourth generation quarks, top-partner masses are excluded up to 420 GeV and neutral particle masses up to 140 GeV.

AB - A search for new phenomena in tt¯ events with large missing transverse momentum in proton-proton collisions at a center-of-mass energy of 7 TeV is presented. The measurement is based on 1.04  fb−1 of data collected with the ATLAS detector at the LHC. Contributions to this final state may arise from a number of standard model extensions. The results are interpreted in terms of a model where new top-quark partners are pair produced and each decay to an on-shell top (or antitop) quark and a long-lived undetected neutral particle. The data are found to be consistent with standard model expectations. A limit at 95% confidence level is set excluding a cross section times branching ratio of 1.1 pb for a top-partner mass of 420 GeV and a neutral particle mass less than 10 GeV. In a model of exotic fourth generation quarks, top-partner masses are excluded up to 420 GeV and neutral particle masses up to 140 GeV.

U2 - 10.1103/PhysRevLett.108.041805

DO - 10.1103/PhysRevLett.108.041805

M3 - Journal article

VL - 108

JO - Physical review letters

JF - Physical review letters

SN - 1079-7114

IS - 4

M1 - 041805

ER -