Gluon fragmentation into heavy quarkonium
Feb, 199313 pages
Published in:
- Phys.Rev.Lett. 71 (1993) 1673-1676
e-Print:
- hep-ph/9303205 [hep-ph]
Report number:
- NUHEP-TH-92-23,
- UCD-92-25
Citations per year
Abstract: (arXiv)
The dominant production mechanism for heavy quark-antiquark bound states in very high energy processes is fragmentation, the splitting of a high energy parton into a quarkonium state and other partons. We show that the fragmentation functions describing these processes can be calculated using perturbative QCD. We calculate the fragmentation functions for a gluon to split into S-wave quarkonium states to leading order in the QCD coupling constant. The leading logarithms of , where is the factorization scale and is the heavy quark mass, are summed up using Altarelli-Parisi evolution equations.Note:
- Revised version
- quarkonium: heavy
- gluon: fragmentation function
- psi mesons
- quantum chromodynamics: perturbation theory
- leading logarithm approximation
- coupling constant: strong interaction
- strong interaction: coupling constant
- DGLAP equation
- Feynman graph: higher-order
- numerical calculations
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