A DETERMINATION OF THE QED COUPLING AT THE Z-POLE

Authors
MARTIN AD ZEPPENFELD D
Citation
Ad. Martin et D. Zeppenfeld, A DETERMINATION OF THE QED COUPLING AT THE Z-POLE, Physics letters. Section B, 345(4), 1995, pp. 558-563
Citations number
31
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
345
Issue
4
Year of publication
1995
Pages
558 - 563
Database
ISI
SICI code
0370-2693(1995)345:4<558:ADOTQC>2.0.ZU;2-K
Abstract
We critically examine the evaluation of the hadronic contribution to t he running of the QED coupling, alpha, from Q(2) = 0 to Q(2) = M(Z)(2) . Using data for e(+)e(-) --> hadrons we find that alpha(M(Z)(2))(-1) = 128.99+/-0.06, as compared to the existing value of 128.87+/-0.12.