Relativistic corrections to gluon fragmentation into spin-triplet S-wave quarkonium

Geoffrey T. Bodwin, Jungil Lee

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

We use the NRQCD factorization formalism to calculate the relativistic corrections to the fragmentation function for a gluon fragmenting into a spin-triplet S-wave heavy quarkonium. We make use of the gauge-invariant formulation of the fragmentation function of Collins and Soper. The color-octet contribution receives a large, negative relativistic correction, while the color-singlet contribution receives a large, positive relativistic correction. The considerable decrease in the color-octet contribution requires a corresponding increase in the phenomenological value of the leading color-octet matrix element in order to maintain a fit to the Fermilab Tevatron data.

Original languageEnglish
Article number054003
JournalPhysical Review D
Volume69
Issue number5
DOIs
Publication statusPublished - 2004 Dec 1

Fingerprint

S waves
octets
fragmentation
color
factorization
formalism
formulations
matrices

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Relativistic corrections to gluon fragmentation into spin-triplet S-wave quarkonium. / Bodwin, Geoffrey T.; Lee, Jungil.

In: Physical Review D, Vol. 69, No. 5, 054003, 01.12.2004.

Research output: Contribution to journalArticle

@article{dc6e15e3db444f71995d17a9468a893c,
title = "Relativistic corrections to gluon fragmentation into spin-triplet S-wave quarkonium",
abstract = "We use the NRQCD factorization formalism to calculate the relativistic corrections to the fragmentation function for a gluon fragmenting into a spin-triplet S-wave heavy quarkonium. We make use of the gauge-invariant formulation of the fragmentation function of Collins and Soper. The color-octet contribution receives a large, negative relativistic correction, while the color-singlet contribution receives a large, positive relativistic correction. The considerable decrease in the color-octet contribution requires a corresponding increase in the phenomenological value of the leading color-octet matrix element in order to maintain a fit to the Fermilab Tevatron data.",
author = "Bodwin, {Geoffrey T.} and Jungil Lee",
year = "2004",
month = "12",
day = "1",
doi = "10.1103/PhysRevD.69.054003",
language = "English",
volume = "69",
journal = "Physical review D: Particles and fields",
issn = "0556-2821",
publisher = "American Institute of Physics Publising LLC",
number = "5",

}

TY - JOUR

T1 - Relativistic corrections to gluon fragmentation into spin-triplet S-wave quarkonium

AU - Bodwin, Geoffrey T.

AU - Lee, Jungil

PY - 2004/12/1

Y1 - 2004/12/1

N2 - We use the NRQCD factorization formalism to calculate the relativistic corrections to the fragmentation function for a gluon fragmenting into a spin-triplet S-wave heavy quarkonium. We make use of the gauge-invariant formulation of the fragmentation function of Collins and Soper. The color-octet contribution receives a large, negative relativistic correction, while the color-singlet contribution receives a large, positive relativistic correction. The considerable decrease in the color-octet contribution requires a corresponding increase in the phenomenological value of the leading color-octet matrix element in order to maintain a fit to the Fermilab Tevatron data.

AB - We use the NRQCD factorization formalism to calculate the relativistic corrections to the fragmentation function for a gluon fragmenting into a spin-triplet S-wave heavy quarkonium. We make use of the gauge-invariant formulation of the fragmentation function of Collins and Soper. The color-octet contribution receives a large, negative relativistic correction, while the color-singlet contribution receives a large, positive relativistic correction. The considerable decrease in the color-octet contribution requires a corresponding increase in the phenomenological value of the leading color-octet matrix element in order to maintain a fit to the Fermilab Tevatron data.

UR - http://www.scopus.com/inward/record.url?scp=1942541304&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1942541304&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.69.054003

DO - 10.1103/PhysRevD.69.054003

M3 - Article

AN - SCOPUS:1942541304

VL - 69

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 5

M1 - 054003

ER -