Measurement of the Effective Weak Mixing Angle in $$p\bar{p} \to Z/\gamma^* \to e^+e^-$$ events at $$\sqrt{s} = 1.96$$ TeV
- Hefei, CUST
We present a measurement of the fundamental parameter of the standard model, the weak mixing angle, 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.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1426675
- Report Number(s):
- FERMILAB-THESIS-2016-43; 1657303
- Country of Publication:
- United States
- Language:
- English
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