QUADRATIC MASS CORRECTIONS OF ORDER O(ALPHA(3)(S)M(Q)(2) S) TO THE DECAY-RATE OF Z-BOSONS AND W-BOSONS/

Authors
CHETYRKIN KG KUHN JH
Citation
Kg. Chetyrkin et Jh. Kuhn, QUADRATIC MASS CORRECTIONS OF ORDER O(ALPHA(3)(S)M(Q)(2) S) TO THE DECAY-RATE OF Z-BOSONS AND W-BOSONS/, Physics letters. Section B, 406(1-2), 1997, pp. 102-109
Citations number
27
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
406
Issue
1-2
Year of publication
1997
Pages
102 - 109
Database
ISI
SICI code
0370-2693(1997)406:1-2<102:QMCOOO>2.0.ZU;2-7
Abstract
We analytically compute quadratic mass corrections of order O(alpha(s) (3)m(q)(2)/s) to the absorptive part of the (non-diagonal) correlator of two axial vector currents. This allows us to find the correction of order O(alpha(s)(3)m(q)(2)/M-W(2)) to Gamma(W --> hadrons) as well as similar corrections to Gamma(Z --> hadrons). (C) 1997 Published by El sevier Science B.V.