Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1993-02-25
Phys.Lett. B324 (1994) 217-223
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages , figures described but not included, available on request,
Scientific paper
10.1016/0370-2693(94)90410-3
We have calculated part of O(${\alpha}_{S}$) QCD radiative correction to the total cross-section of top's threshold production in $ e^{+}e^{-} \to t\bar t \to W^{-} b W^{+} \bar b$ reaction. We found out a curious fact: there is no O(${\alpha}_{S}$) correction to the total cross-section, originated from $b \bar b , t \bar b ,\bar t b $ gluon exchange and corresponding gluon emission. Thus, all O(${\alpha}_{S}$) corrections which are non-zero, can be classified as: 1) corrections to $t \bar t$ nonrelativistic potential 2) corrections to the top's width 3) hard gluon correction to $\gamma t \bar t$-vertex. These corrections are well-known and were described in the previous papers. We can conclude that similar situation takes place for all unstable particles threshold production. This result can be expressed in the form of a general statment: There is no O(${\alpha}_{QED}$ or ${\alpha}_{QCD}$) corrections for the total cross-section , originated from the "jet-jet" interection.
Melnikov Kirill
Yakovlev Oleg
No associations
LandOfFree
Top Near Threshold: All QCD Radiative Corrections are Trivial does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Top Near Threshold: All QCD Radiative Corrections are Trivial, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Top Near Threshold: All QCD Radiative Corrections are Trivial will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-534286