Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/115242
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Type: | Journal article |
Title: | Search for pair production of heavy vector-like quarks decaying to high-p τ W bosons and b quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector |
Other Titles: | Search for pair production of heavy vector-like quarks decaying to high-p tau W bosons and b quarks in the lepton-plus-jets final state in pp collisions at root s=13 TeV with the ATLAS detector |
Author: | Aaboud, M. Aad, G. Abbott, B. Abdinov, O. Abeloos, B. Abidi, S. AbouZeid, O. Abraham, N. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, B. Adachi, S. Adamczyk, L. Adelman, J. Adersberger, M. Adye, T. Affolder, A. Afik, Y. et al. |
Citation: | The Journal of High Energy Physics, 2017; 2017(10):141-1-141-40 |
Publisher: | Springer |
Issue Date: | 2017 |
ISSN: | 1126-6708 1029-8479 |
Statement of Responsibility: | M. Aaboud, G. Aad, B. Abbott ... P. Jackson … L. Lee ... M. J. White … et al. (ATLAS Collaboration) |
Abstract: | A search is presented for the pair production of heavy vector-like T quarks, primarily targeting the T quark decays to a W boson and a b-quark. The search is based on 36.1 fb−1 of pp collisions at s√=13 TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Data are analysed in the lepton-plus-jets final state, including at least one b-tagged jet and a large-radius jet identified as originating from the hadronic decay of a high-momentum W boson. No significant deviation from the Standard Model expectation is observed in the reconstructed T mass distribution. The observed 95% confidence level lower limit on the T mass are 1350 GeV assuming 100% branching ratio to Wb. In the SU(2) singlet scenario, the lower mass limit is 1170 GeV. This search is also sensitive to a heavy vector-like B quark decaying to Wt and other final states. The results are thus reinterpreted to provide a 95% confidence level lower limit on the B quark mass at 1250 GeV assuming 100% branching ratio to Wt; in the SU(2) singlet scenario, the limit is 1080 GeV. Mass limits on both T and B production are also set as a function of the decay branching ratios. The 100% branching ratio limits are found to be applicable to heavy vector-like Y and X production that decay to Wb and Wt, respectively. |
Keywords: | Exotics; Hadron-Hadron scattering (experiments) |
Rights: | © The Author(s) 2017. This article is published under an open access license. Please check the 'Copyright Information' section for details of this license and what re-use is permitted. If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and re-use information, please contact the Rights and Permissions team. |
DOI: | 10.1007/JHEP10(2017)141 |
Published version: | http://dx.doi.org/10.1007/jhep10(2017)141 |
Appears in Collections: | Aurora harvest 8 Physics publications |
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hdl_115242.pdf | published version | 1.23 MB | Adobe PDF | View/Open |
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