Measurement of the Effective Weak Mixing Angle in pp[over ¯]âZ/γ
Phys Rev Lett
; 120(24): 241802, 2018 Jun 15.
Article
em En
| MEDLINE
| ID: mdl-29956986
ABSTRACT
We present a measurement of the effective weak mixing angle parameter sin^{2}θ_{eff}^{â} in pp[over ¯]âZ/γ^{*}âµ^{+}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}^{â}[µµ]=0.23016±0.00064 is further combined with the result from the D0 measurement in pp[over ¯]âZ/γ^{*}âe^{+}e^{-} events, resulting in sin^{2}θ_{eff}^{â}[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.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Federação Russa