Measurement of the strong-coupling constant αs to second order for 22<= √s <=46.78 GeV
Abstract
Using the Mark-J detector at the high-energy e+e- collider PETRA, we compare the data from hadron production with the complete second-order QCD calculation over the energy region 22 to 46.78 GeV. We determine the QCD parameter Λ=100+/-30+65-45 MeV which yields the strong-coupling constant αs=0.12+/-0.02 for √s =44 GeV.
- Publication:
-
Physical Review Letters
- Pub Date:
- April 1985
- DOI:
- 10.1103/PhysRevLett.54.1750
- Bibcode:
- 1985PhRvL..54.1750A
- Keywords:
-
- 12.35.Cn;
- 13.65.+i