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arXiv 1409.0600hep-ex
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Tevatron上Z玻色子不对称性测量

Z Boson Asymmetry Measurements at the Tevatron

B. Quinn

摘要:

We present measurements of the forward-backward asymmetry (A_fb) in dilepton pair decays of Z bosons produced in ppbar collisions using the full Tevatron dataset. The CDF experiment extracts a value for the effective weak mixing angle parameter sin^{2}θ^{l}_{eff} of 0.2315 +/- 0.0010 from the A_fb distribution of dimuon events in 9.2 fb^{-1} of integrated luminosity . From dielectron events in 9.7 fb^{-1} of data, the D0 experiment finds sin^{2}θ^{l}_{eff} = 0.23106 +/- 0.00053, the world's most precise measurement of sin^{2}θ^{l}_{eff} from hadron colliders and with light quark couplings.

英文摘要:

We present measurements of the forward-backward asymmetry (A_fb) in dilepton pair decays of Z bosons produced in ppbar collisions using the full Tevatron dataset. The CDF experiment extracts a value for the effective weak mixing angle parameter sin^{2}θ^{l}_{eff} of 0.2315 +/- 0.0010 from the A_fb distribution of dimuon events in 9.2 fb^{-1} of integrated luminosity. From dielectron events in 9.7 fb^{-1} of data, the D0 experiment finds sin^{2}θ^{l}_{eff} = 0.23106 +/- 0.00053, the world's most precise measurement of sin^{2}θ^{l}_{eff} from hadron colliders and with light quark couplings.

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