Measurement of the Effective Weak Mixing Angle in ppbar → Z/γ∗ → ℓ+ ℓ− Events

, D0 Collaboration (2018) Measurement of the Effective Weak Mixing Angle in ppbar → Z/γ∗ → ℓ+ ℓ− Events. Physical review letters, 120. ISSN 1079-7114

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Abstract

We present a measurement of the effective weak mixing angle parameter sin2θℓeff, in pp¯→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 sin2θℓeff[μμ]=0.23016±0.00064 is further combined with the result from the D0 measurement in pp¯→Z/γ∗→e+e− events, resulting in sin2θℓeff[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:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
126654
Deposited By:
Deposited On:
10 Sep 2018 13:28
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Oct 2020 05:50