Search for tt[bar] resonances in fully hadronic final states in pp collisions at √s = 13 TeV with the ATLAS detector
This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of √s = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair pr...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
October 9, 2020
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| In: |
Journal of high energy physics
Year: 2020, Issue: 10 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP10(2020)061 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP10(2020)061
|
| Author Notes: | The ATLAS collaboration |
MARC
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| 246 | 3 | 3 | |a Search for tt bar resonances in fully hadronic final states in pp collisions at square root s = 13 TeV with the ATLAS detector |
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| 500 | |a The Atlas collaboration: G. Aad, V. Andrei, F. Bartels, A.E. Bolz, M. Czurylo, S. Dittmeier, M. Dunford, D.E. Ferreira de Lima, S. Franchino, L. Helary, J. Jongmanns, M. Klassen, A. Krishnan, M. Mkrtchyan, F. Napolitano, P. Ott, A. Schoening, H.-C. Schultz-Coulon, T. Spieker, R. Stamen, P. Starovoitov, S. Suchek, L. Vigani, S. Weber, M. Wessels, X. Yue [und 2922 weitere] | ||
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| 500 | |a Im Titel steht der zweite Buchstabe t mit einem Oberstrich | ||
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| 520 | |a This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of √s = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a tt¯ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new Z′ boson in a topcolor-assisted-technicolor model. The Z′ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively. | ||
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