Measurement of alphas with JADE using Moments of event shape observables and the Four-Jet Rate
Jochen Schieck
Abstract
Data from e+e-annihilation into hadrons collected by the JADE experiment at centre-of-mass energies between 14 GeV and 44 GeV were used to study moments of event shape distributions and the four-jet rate as a function of the Durham algorithm's resolution parameter ycut. The data were compared to a QCD NLO order calculations and including NLLA resummation in the case of the four-jet rate. The strong coupling measured from the moments was alphas(MZ)=0.1286+-0.0007(stat)+-0.0011(exp)+-0.0022(had)+-0.0068(theo) and from the four-jet rate was alphas(MZ)=0.1169+-0.0004(stat)+-0.0012(exp)+-0.0021(had)+-0.0007(theo) both in agreement with the world average.
Create a lesson
Related papers
Search for proton decay into a single charged antilepton and a massless invisible particle using the full pure water data set of Super-Kamiokande
Kamiokande Collaboration, Y. M. Liu, K. Terada et al.
ConCA: Concentration-Aware Channel Attention for Fine-Grained Visual Recognition
Yu-Sheng Liu, Yu-Chen Tung
Searching for Extra Dimensions and Copies of the Standard Model with IceCube
R. Abbasi, M. Ackermann, J. Adams et al.
Low-energy Muon-Nucleon scattering experiment: LUNE (White Paper)
Chenlei An, Dong Bai, Ziyu Bai et al.
From a Long-standing Prediction to a New Family of Hadrons
Xining Wang, Kai Yi
First Measurement of Solar Neutrinos through Elastic Neutrino-Electron Scattering at the keV Scale
XENON Collaboration, E. Aprile, J. Aalbers et al.