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Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at s=7 TeV with the ATLAS detector
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ATLAS Collaboration (Including: Farrington, Sinead, Harrison, P. F., Janus, M., Jeske, C., Jones, G. (Graham), Martin, T. A., Murray, W. and Pianori, E.). (2015) Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at s=7 TeV with the ATLAS detector. Journal of High Energy Physics, 2015 (9). 49. doi:10.1007/jhep09(2015)049 ISSN 1029-8479.
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WRAP-measurement-forward-backward-asymmetry-electron-muon-collisions-Pianori-2015.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (984Kb) | Preview |
Official URL: https://doi.org/10.1007/jhep09(2015)049
Abstract
This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp → Z/γ* → l+l−, with l being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in pp collisions at the LHC at s=7 TeV, corresponding to an integrated luminosity of 4.8 fb−1. The measured asymmetry values are found to be in agreement with the corresponding Standard Model predictions. The combination of the muon and electron channels yields a value of the effective weak mixing angle of sin2θefflept = 0.2308 ± 0.0005(stat.) ± 0.0006(syst.) ± 0.0009(PDF), where the first uncertainty corresponds to data statistics, the second to systematic effects and the third to knowledge of the parton density functions. This result agrees with the current world average from the Particle Data Group fit.
| Item Type: | Journal Article | ||||
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| SWORD Depositor: | Library Publications Router | ||||
| Journal or Publication Title: | Journal of High Energy Physics | ||||
| Publisher: | Springer Berlin Heidelberg | ||||
| ISSN: | 1029-8479 | ||||
| Official Date: | 9 September 2015 | ||||
| Dates: |
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| Volume: | 2015 | ||||
| Number: | 9 | ||||
| Article Number: | 49 | ||||
| DOI: | 10.1007/jhep09(2015)049 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||
| Date of first compliant deposit: | 13 September 2018 | ||||
| Date of first compliant Open Access: | 13 September 2018 |
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