TY - JOUR
T1 - Normalization of QCD corrections in top quark decay
AU - Smith, Brian H.
AU - Voloshin, M. B.
N1 - Funding Information:
This work was supporteidn partb y DOE grantD E-AC-02-83ER40105B.H S is supportebdy the University of MinnesotaD octoralD issertationFe llowship program.
PY - 1994/12/8
Y1 - 1994/12/8
N2 - We discuss the effects of QCD corrections to the on-shell decay t → bW. We resolve the scale ambiguity using the Brodaky-Lepage-Mackenzie scheme, and find that the appropriate coupling constant is αsMS(0.122mt). The largest long distance contribution comes from the definition of the on-shell mass of the top quark. We note that QCD corrections to the electroweak ρ{variant} parameter are extremely small when the ρ{variant} parameter is expressed in terms of the top quark width.
AB - We discuss the effects of QCD corrections to the on-shell decay t → bW. We resolve the scale ambiguity using the Brodaky-Lepage-Mackenzie scheme, and find that the appropriate coupling constant is αsMS(0.122mt). The largest long distance contribution comes from the definition of the on-shell mass of the top quark. We note that QCD corrections to the electroweak ρ{variant} parameter are extremely small when the ρ{variant} parameter is expressed in terms of the top quark width.
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U2 - 10.1016/0370-2693(94)01270-9
DO - 10.1016/0370-2693(94)01270-9
M3 - Article
AN - SCOPUS:3042887537
SN - 0370-2693
VL - 340
SP - 176
EP - 180
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3
ER -