We have determined the strong coupling alpha(s) from measurements of jet rates in hadronic decays of Z0 bosons collected by the SLD experiment at SLAC. Using six collinear and infrared safe jet algorithms we compared our data with the predictions of QCD calculated up to second order in perturbation theory, and also with resummed calculations. We find alpha(s)(M(Z)2)=0.118+/-0.002(stat)+/-0.003(syst) +/-0.010 (theory), where the dominant uncertainty is from uncalculated higher order contributions.
Measurement of A(s) From Jet Rates At the Z(0) Resonance
SANTOCCHIA, Attilio;PAULUZZI, Michele;FIANDRINI, Emanuele;BERTUCCI, Bruna
1993
Abstract
We have determined the strong coupling alpha(s) from measurements of jet rates in hadronic decays of Z0 bosons collected by the SLD experiment at SLAC. Using six collinear and infrared safe jet algorithms we compared our data with the predictions of QCD calculated up to second order in perturbation theory, and also with resummed calculations. We find alpha(s)(M(Z)2)=0.118+/-0.002(stat)+/-0.003(syst) +/-0.010 (theory), where the dominant uncertainty is from uncalculated higher order contributions.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
