Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s=7 TeV using the ATLAS detector
This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4.7 fb−1 of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at √s=7 TeV. Final states containing one or two isolated leptons (electrons or muons)...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
4 December 2013
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| In: |
Physical review letters
Year: 2013, Jahrgang: 111, Heft: 23, Pages: 1-19 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.111.232002 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.111.232002 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.111.232002 
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| Verfasserangaben: | G. Aad et al. (ATLAS Collaboration) |
MARC
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| 245 | 1 | 0 | |a Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s=7 TeV using the ATLAS detector |c G. Aad et al. (ATLAS Collaboration) |
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| 246 | 3 | 3 | |a Measurement of top quark polarization in top-antitop events from proton-proton collisions at square root s =7 TeV using the ATLAS detector |
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| 518 | |a ATLAS Collaboration: G. Aad, C.F. Anders, G. Anders, V. Andrei, T. Colombo, Y. Davygora, T.A. Dietzsch, M. Dunford, P. Hanke, J.I. Hofmann, G. Kasieczka, A. Khomich, E.-E. Kluge, A. Kugel, H. Laier, V.S. Lang, V. Lendermann, K. Meier, F. Mueller, R. Narayan, S. Poddar, S. Schaetzel, V. Scharf, S. Schmitt, A. Schoening, N. Schroer, H.-C. Schultz-Coulon, R. Stamen, M. Wessels und weitere 2897 | ||
| 520 | |a This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4.7 fb−1 of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at √s=7 TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of αℓP, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, αℓPCPC=−0.035±0.014(stat)±0.037(syst) and αℓPCPV=0.020±0.016(stat)+0.013−0.017(syst), are in good agreement with the standard model prediction of negligible top quark polarization. | ||
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