# Measurement of the effective weak mixing angle in $p\bar{p}\rightarrow Z/\gamma^{*}\rightarrow e^{+}e^{-}$ events

Abstract : We present a measurement of the fundamental parameter of the standard model, the weak mixing angle, in $p\bar{p}\rightarrow Z/\gamma^{*}\rightarrow e^{+}e^{-}$ 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 $\sin^2\theta_{\text{eff}}^{\text{$\ell$}}=0.23146 \pm 0.00047$ is the most precise measurement from light quark interactions to date, with a precision close to the best LEP and SLD results.
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http://hal.in2p3.fr/in2p3-01057270
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Submitted on : Friday, August 22, 2014 - 9:19:44 AM
Last modification on : Tuesday, November 19, 2019 - 2:37:37 AM

### Citation

V.M. Abazov, B. Abbott, B. s. Acharya, M. Adams, T. Adams, et al.. Measurement of the effective weak mixing angle in $p\bar{p}\rightarrow Z/\gamma^{*}\rightarrow e^{+}e^{-}$ events. Physical Review Letters, American Physical Society, 2015, 115 (4), pp.041801. ⟨10.1103/PhysRevLett.115.041801⟩. ⟨in2p3-01057270⟩

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