Next-to-leading order calculation of a fragmentation function in a light-cone gauge

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The short-distance coefficients for the color-octet S13 term in the fragmentation function for a gluon to split into polarized heavy quarkonium states are recalculated to order αs2. The light-cone gauge remarkably simplifies the calculation by eliminating many Feynman diagrams at the expense of introducing spurious poles in loop integrals. We do not use any conventional prescriptions for spurious pole. Instead, we only use gauge invariance with the aid of Collins-Soper definition of the fragmentation function. Our result agrees with a previous calculation of Braaten and Lee in the Feynman gauge, but disagrees with another previous calculation.

Original languageEnglish
Article number094007
Pages (from-to)1-7
Number of pages7
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume71
Issue number9
DOIs
Publication statusPublished - 2005 May 1

Fingerprint

Fragmentation
Gauge
cones
fragmentation
Cone
Pole
poles
Feynman Diagrams
Gauge Invariance
Feynman diagrams
octets
gauge invariance
Simplify
color
Coefficient
coefficients
Term

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

Next-to-leading order calculation of a fragmentation function in a light-cone gauge. / Lee, Jungil.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 71, No. 9, 094007, 01.05.2005, p. 1-7.

Research output: Contribution to journalArticle

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