Measurement of the Effective Weak Mixing Angle in $p\bar{p}\rightarrow Z/\gamma^* \rightarrow \ell^+\ell^-$ Events - INSPIRE

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Measurement of the Effective Weak Mixing Angle in $p\bar{p}\rightarrow Z/\gamma^* \rightarrow \ell^+\ell^-$ Events

D0

Collaboration

•

Victor Mukhamedovich Abazov
(
- Dubna, JINR
)

Oct 11, 2017

8 pages

Published in:

Phys.Rev.Lett. 120 (2018) 24, 241802

Published: Jun 14, 2018

e-Print:

1710.03951 [hep-ex]

DOI:

10.1103/PhysRevLett.120.241802

Report number:

FERMILAB-PUB-17-434-E

Experiments:

FNAL-E-0823

View in:

reference search21 citations

Citations per year

Abstract: (APS)

We present a measurement of the effective weak mixing angle parameter sin2θeffℓ 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 sin2θeffℓ[μμ]=0.23016±0.00064 is further combined with the result from the D0 measurement in pp¯→Z/γ*→e+e- events, resulting in sin2θeffℓ[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.

Note:

submitted to Phys. Rev. Lett

anti-p p: scattering
anti-p p: colliding beams
Z0: hadroproduction
Z0: leptonic decay
muon: pair production
dimuon: mass spectrum
mass spectrum: (muon+ muon-)
Drell-Yan process
Weinberg angle
electroweak interaction: mixing angle

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Figures(2)

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