Hadronic J/ψ production calculated in the NRQCD factorization formalism

Sean P Fleming, Ivan Maksymyk

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

The NRQCD factorization formalism of Bodwin, Braaten, and Lepage prescribes how to write quarkonium production rates as a sum of products of short-distance coefficients times nonperturbative long-distance NRQCD matrix elements. We present a calculation of the inclusive cross section for hadronic ψ production within the framework of the factorization formalism. Our method applies to the case in which the helicity of the ψ is not measured. In addition to the well-known color-singlet production mechanisms, there are equally important mechanisms in which the cc̄ pair that forms the Jl ψ is initially produced in a color-octet state, in either a 3S1. 1S0, 3P0, or 3P2 angular-momentum configuration. In our presentation, we faithfully follow the "matching" procedure, thereby shedding light on the NRQCD factorization formalism. We determine the short-distance coefficients appearing in the factorization formula, and we point out how one may systematically include relativistic corrections in these calculations.

Original languageEnglish (US)
Pages (from-to)3608-3618
Number of pages11
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume54
Issue number5
Publication statusPublished - Sep 1 1996
Externally publishedYes

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ASJC Scopus subject areas

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

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