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The Differential equation method: Calculation of vertex type diagrams with one nonzero mass

Jul, 1997

12 pages

Published in:

Phys.Lett.B 417 (1998) 163-172

e-Print:

hep-ph/9707492 [hep-ph]

DOI:

10.1016/S0370-2693(97)01195-7

Report number:

BI-TP-97-26

View in:

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Abstract:

The differential equation method is applied to evaluate analytically two-loop vertex Feynman diagrams. Three on-shell infrared divergent planar two-loop diagrams with zero thresholds contributing to the processes Z --> bb bar (for zero b mass) and/or H --> gg are calculated in order to demonstrate a new application of this method.

Note:

12 pages, LATEX, uses axodray.sty Report-no: BI-TP-97/26

Feynman graph: higher-order
higher-order: 2
Feynman graph: massive
differential equations
Z0: hadronic decay
bottom: pair production
Higgs particle: hadronic decay
gluon: pair production
Z0: width
Higgs particle: width

References(23)

Figures(0)

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