Measurement of the Effective Weak Mixing Angle in pp[over ¯]âZ/γ
Phys Rev Lett
; 120(24): 241802, 2018 Jun 15.
Article
in 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.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2018
Type:
Article
Affiliation country:
RUSSIA