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Measurements of top-quark pair differential cross-sections in the eµ channel in pp collisions at √s = 13 TeV using the ATLAS detector
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Beckingham, M., Ennis, Joseph Stanford, Farrington, Sinead, Harrison, P. F., Jeske, C., Jones, G., Martin, T. A., Murray, W., Pianori, E. and Spangenberg, Martin (2017) Measurements of top-quark pair differential cross-sections in the eµ channel in pp collisions at √s = 13 TeV using the ATLAS detector. European Physical Journal C, 77 (5). 292. doi:10.1140/epjc/s10052-017-4821-x ISSN 1434-6044.
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Official URL: http://doi.org/10.1140/epjc/s10052-017-4821-x
Abstract
This article presents measurements of tt¯ differential cross-sections in a fiducial phase-space region, using an integrated luminosity of 3.2 fb-1 of proton–proton data at a centre-of-mass energy of s=13 TeV recorded by the ATLAS experiment at the LHC in 2015. Differential cross-sections are measured as a function of the transverse momentum and absolute rapidity of the top quark, and of the transverse momentum, absolute rapidity and invariant mass of the tt¯ system. The tt¯ events are selected by requiring one electron and one muon of opposite electric charge, and at least two jets, one of which must be tagged as containing a b-hadron. The measured differential cross-sections are compared to predictions of next-to-leading order generators matched to parton showers and the measurements are found to be consistent with all models within the experimental uncertainties with the exception of the Powheg-Box+ Herwig++ predictions, which differ significantly from the data in both the transverse momentum of the top quark and the mass of the tt¯ system.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
| SWORD Depositor: | Library Publications Router | ||||||
| Journal or Publication Title: | European Physical Journal C | ||||||
| Publisher: | Springer | ||||||
| ISSN: | 1434-6044 | ||||||
| Official Date: | 8 May 2017 | ||||||
| Dates: |
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| Volume: | 77 | ||||||
| Number: | 5 | ||||||
| Article Number: | 292 | ||||||
| DOI: | 10.1140/epjc/s10052-017-4821-x | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Reuse Statement (publisher, data, author rights): | ** From Springer Nature via Jisc Publications Router. ** History: ** received: 16-12-2016 ** accepted: 12-04-2017 ** collection: 05-2017 ** epub: 08-05-2017 ** Licence for this article: http://creativecommons.org/licenses/by/4.0/ | ||||||
| Access rights to Published version: | Open Access (Creative Commons) |
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