Measurement of the W boson helicity in top quark decays using 5.4 fb⁻¹ of pp̄ collision data
Journal Article
·
· Physical Review. D, Particles, Fields, Gravitation and Cosmology
We present a measurement of the helicity of the W boson produced in top quark decays using tt¯ decays in the l+jets and dilepton final states selected from a sample of 5.4 fb⁻¹ of collisions recorded using the D0 detector at the Fermilab Tevatron pp̄ collider. We measure the fractions of longitudinal and right-handed W bosons to be f₀=0.669±0.102[±0.078(stat.)±0.065(syst.)] and f₊=0.023±0.053[±0.041(stat.)±0.034(syst.)], respectively. This result is consistent at the 98% level with the standard model. A measurement with f₀ fixed to the value from the standard model yields f₊=0.010±0.037[±0.022(stat.)±0.030(syst.)].
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1099883
- Journal Information:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology, Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Vol. 83 Journal Issue: 3; ISSN 1550-7998
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 40 works
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