Search for single top-quark production via flavour-changing neutral currents at 8 TeV with the ATLAS detector
A search for single top-quark production via flavour-changing neutral current processes from gluon plus up- or charm-quark initial states in proton–proton collisions at the LHC is presented. Data collected with the ATLAS detector in 2012 at a centre-of-mass energy of 8 TeV and corresponding to an in...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
29 January 2016
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| In: |
The European physical journal. C, Particles and fields
Year: 2016, Volume: 76, Issue: 2 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-016-3876-4 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjc/s10052-016-3876-4
|
| Author Notes: | ATLAS Collaboration* |
MARC
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| 245 | 1 | 0 | |a Search for single top-quark production via flavour-changing neutral currents at 8 TeV with the ATLAS detector |c ATLAS Collaboration* |
| 264 | 1 | |c 29 January 2016 | |
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| 500 | |a *ATLAS Collaboration: G. Aad, C.F. Anders, V. Andrei, A.E. Baas, O. Brandt, T. Colombo, Y. Davygora, J.I. Djuvsland, M. Dunford, M.P. Geisler, M. Giulini, P. Hanke. J. Jongmanns, E.-E. Kluge, M. Kretz, A. Kugel, V.S. Lang, M. Lisovyi, K. Meier, H. Meyer zu Theenhausen, D.I. Narrias Villar, M. Sahinsoy, S. Schaetzel, V. Scharf, S. Schmitt, A. Schoening, H.-C. Schultz-Coulon, D. Sosa, R. Stamen, P. Starovoitov, M. Wessels [und sehr viele weitere Personen] | ||
| 500 | |a Gesehen am 18.05.2022 | ||
| 520 | |a A search for single top-quark production via flavour-changing neutral current processes from gluon plus up- or charm-quark initial states in proton–proton collisions at the LHC is presented. Data collected with the ATLAS detector in 2012 at a centre-of-mass energy of 8 TeV and corresponding to an integrated luminosity of 20.3 fb−1 are used. Candidate events for a top quark decaying into a lepton, a neutrino and a jet are selected and classified into signal- and background-like candidates using a neural network. No signal is observed and an upper limit on the production cross-section multiplied by the t→Wb branching fraction is set. The observed 95 % CL limit is σqg→t×B(t→Wb)<3.4pb and the expected 95 % CL limit is σqg→t×B(t→Wb)<2.9pb. The observed limit can be interpreted as upper limits on the coupling constants of the flavour-changing neutral current interactions divided by the scale of new physics κugt/Λ<5.8×10−3TeV−1 and κcgt/Λ<13×10−3TeV and on the branching fractions B(t→ug)<4.0×10−5 and B(t→cg)<20×10−5. | ||
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| 773 | 0 | 8 | |i Enthalten in |t The European physical journal. C, Particles and fields |d Berlin : Springer, 1998 |g 76(2016,2) Artikel-Nummer 55, 30 Seiten |h Online-Ressource |w (DE-627)253722934 |w (DE-600)1459069-4 |w (DE-576)072372664 |x 1434-6052 |7 nnas |a Search for single top-quark production via flavour-changing neutral currents at 8 TeV with the ATLAS detector |
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| 787 | 0 | 8 | |i Errata |a ATLAS Collaboration |t Erratum to: Search for single top-quark production via flavour-changing neutral currents at 8 TeV with the ATLAS detector |d 2022 |w (DE-627)1803678836 |
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