Loading...
Measurement of the Effective Weak Mixing Angle in p(p)over-bar - greater than Z/gamma* - greater than e(+)e(-) Events
Wilson, Graham Wallace
Wilson, Graham Wallace
Citations
Altmetric:
Abstract
We present a measurement of the fundamental parameter of the standard model, the weak mixing angle sin2θℓeff which determines the relative strength of weak and electromagnetic interactions, in pp¯→Z/γ∗→e+e− events at a center of mass energy of 1.96 TeV, using data corresponding to 9.7 fb−1 of integrated luminosity collected by the D0 detector at the Fermilab Tevatron. The effective weak mixing angle is extracted from the forward-backward charge asymmetry as a function of the invariant mass around the Z boson pole. The measured value of sin2θℓeff=0.23147±0.00047 is the most precise measurement from light quark interactions to date, with a precision close to the best LEP and SLD results.
Description
This is the published version. Copyright 2015 American Physical Society
Date
2015-07-22
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Collections
Files
Research Projects
Organizational Units
Journal Issue
Keywords
Citation
D0 Collaboration. "Add to E-Shelf Measurement of the Effective Weak Mixing Angle in P(p)over-bar - Greater than Z/gamma* - Greater than E(+)e(-) Events." Physical Review Letters 115.4 (2015). http://dx.doi.org/10.1103/PhysRevLett.115.041801