Abstract
The short-distance coefficients for the color-octet 3S1 term in the fragmentation function for a gluon to split into heavy quarkonium states is calculated to order αs2 . The gauge-invariant definition of the fragmentation function by Collins and Soper is employed. Ultraviolet divergences are removed using the MS renormalization procedure. The longitudinal term in the fragmentation function agrees with a previous calculation by Beneke and Rothstein. The next-to-leading order correction to the transverse term disagrees with a previous calculation.
Original language | English |
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Pages (from-to) | 427-439 |
Number of pages | 13 |
Journal | Nuclear Physics B |
Volume | 586 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2000 Oct 16 |
Externally published | Yes |
Keywords
- 13.60.Le
- 13.87.Fh
- 13.88.+e
- Color-octet
- Fragmentation
- Fragmentation function
- Next-to-leading order
- Nonrelativistic QCD (NRQCD)
- Quarkonium
ASJC Scopus subject areas
- Nuclear and High Energy Physics