Measurement of the Effective Weak Mixing Angle in <i>p</i>(<i>p</i>)over-bar → <i>Z</i>/γ* → <i>l</i><SUP>+</SUP> <i>l</i><SUP>-</SUP> Events

Abazov, VM, Abbott, B, Acharya, BS, Adams, M, Adams, T, Agnew, JP, Alexeev, GD, Alkhazov, G, Alton, A, Askew, A
et al (show 364 more authors) (2018) Measurement of the Effective Weak Mixing Angle in <i>p</i>(<i>p</i>)over-bar → <i>Z</i>/γ* → <i>l</i><SUP>+</SUP> <i>l</i><SUP>-</SUP> Events. PHYSICAL REVIEW LETTERS, 120 (24). 241802-.

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We present a measurement of the effective weak mixing angle parameter sin^{2}θ_{eff}^{ℓ} in pp[over ¯]→Z/γ^{*}→μ^{+}μ^{-} events at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at the Fermilab Tevatron Collider and corresponding to 8.6  fb^{-1} of integrated luminosity. The measured value of sin^{2}θ_{eff}^{ℓ}[μμ]=0.23016±0.00064 is further combined with the result from the D0 measurement in pp[over ¯]→Z/γ^{*}→e^{+}e^{-} events, resulting in sin^{2}θ_{eff}^{ℓ}[comb]=0.23095±0.00040. This combined result is the most precise measurement from a single experiment at a hadron collider and is the most precise determination using the coupling of the Z/γ^{*} to light quarks.

Item Type: Article
Additional Information: submitted to Phys. Rev. Lett
Uncontrolled Keywords: D0 Collaboration
Depositing User: Symplectic Admin
Date Deposited: 15 Feb 2019 16:58
Last Modified: 14 Oct 2023 09:06
DOI: 10.1103/PhysRevLett.120.241802
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