Second order QCD corrections to the forward-backward asymmetry in e+e- - collisions

Ravindran, V. ; van Neerven, W. L. (1998) Second order QCD corrections to the forward-backward asymmetry in e+e- - collisions Physics Letters B, 445 (1-2). pp. 214-222. ISSN 0370-2693

Full text not available from this repository.

Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0370-2693(98)01436-1

Abstract

We will present the result of an analytical calculation of the second order contribution to the forward-backward asymmetry AFBH and the shape constant aH for heavy flavour production in e+e--collisions. The calculation has been carried out by assuming that the quark mass is equal to zero. This is a reasonable approximation for the exact second order correction for charm and bottom quark production at LEP energies but not for top production at future linear colliders. Our result for AFBH is a factor 2.6 (charm) and 4.7 (bottom) larger than obtained by a numerical calculation performed earlier in the literature. We study the effect of the second order corrections on the above parameters including their dependence on the renormalization scale. Further we make a comparison between the fixed pole mass and the running mass approach.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:84652
Deposited On:27 Feb 2012 13:59
Last Modified:27 Feb 2012 13:59

Repository Staff Only: item control page