Measurement of the effective weak mixing angle in pp¯→Z/γ∗→e+e− events

, D0 Collaboration (2015) Measurement of the effective weak mixing angle in pp¯→Z/γ∗→e+e− events. Physical review letters, 115 (4). ISSN 1079-7114

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Abstract

We present a measurement of the fundamental parameter of the standard model, the weak mixing angle sin2θℓeff which determines the relative strength of weak and electromagnetic interactions, 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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
Published on 22/7/2015 (NO acceptance date easily available) © 2015 American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
75429
Deposited By:
Deposited On:
09 Sep 2015 06:33
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Oct 2020 07:56