Measurement of the angular coefficients in Z-boson events using electron and muon pairs from data taken at $ \sqrt{s}=8 $ TeV with the ATLAS detector [electronic resource].
- Published:
- Washington, D.C. : United States. Dept. of Energy. Office of Science, 2016.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy - Physical Description:
- Article numbers 159 : digital, PDF file
- Additional Creators:
- SLAC National Accelerator Laboratory, United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Summary:
- The angular distributions of Drell-Yan charged lepton pairs in the vicinity of the Z-boson mass peak probe the underlying QCD dynamics of Z-boson production. This paper presents a measurement of the complete set of angular coefficients A0–7 describing these distributions in the Z-boson Collins-Soper frame. The data analysed correspond to 20.3 fb–1 of pp collisions at √s = 8 TeV, collected by the ATLAS detector at the CERN LHC. The measurements are compared to the most precise fixed-order calculations currently available (O(α2s)) and with theoretical predictions embedded in Monte Carlo generators. The measurements are precise enough to probe QCD corrections beyond the formal accuracy of these calculations and to provide discrimination between different parton-shower models. A significant deviation from the (O(α2s)) predictions is observed for A0 – A2. In conclusion, evidence is found for non-zero A5,6,7, consistent with expectations.
- Report Numbers:
- E 1.99:1325981
- Subject(s):
- Other Subject(s):
- Note:
- Published through SciTech Connect.
08/29/2016.
": 4570"
Journal of High Energy Physics (Online) 2016 8 ISSN 1029-8479 AM
Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Abeloos, B.; Aben, R.; AbouZeid, O.; Abraham, N.; Abramowicz, H.; Abreu, H.; Abreu, R.; Abulaiti, Y.; Acharya, B.; Adamczyk, L.; Adams, D.; Adelman, J.; Adomeit, S.; Adye, T.; Affolder, A.; Agatonovic-Jovin, T.; Agricola, J.; Aguilar-Saavedra, J.; Ahlen, S.; Ahmadov, F.; Aielli, G.; et al. - Funding Information:
- AC02-76SF00515
View MARC record | catkey: 24049075