Perturbative heavy quark fragmentation function through O({alpha}{sub s}{sup 2}): Gluon initiated contribution
Journal Article
·
· Physical Review. D, Particles Fields
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii, 96822 (United States)
We derive the gluon initiated contribution to the initial condition for the perturbative fragmentation function of a heavy quark through order O({alpha}{sub s}{sup 2}) in the MS scheme. This result is needed for the resummation with next-to-next-to-leading logarithmic accuracy of quasicollinear logarithms ln{sup k}(m{sup 2}) in heavy quark differential distributions by solving the complete Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) equation. Together with the previously evaluated fermion initiated components, this result completes the derivation of the initial condition for the perturbative fragmentation function at next-to-next-to-leading order.
- OSTI ID:
- 20706111
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 71, Issue 5; Other Information: DOI: 10.1103/PhysRevD.71.054021; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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