Progress in the determination of the [Formula Presented] cross section

Francisco O. Durães, Hungchong Kim, Su Houng Lee, Fernando S. Navarra, Marina Nielsen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Improving previous calculations, we compute the [Formula Presented] cross section using QCD sum rules. Our sum rules for the [Formula Presented] [Formula Presented] and [Formula Presented] hadronic matrix elements are constructed by using vacuum-pion correlation functions, and we work up to twist-4 in the soft-pion limit. Our results suggest that using meson exchange models is perfectly acceptable, provided that they include form factors and that they respect chiral symmetry. After evaluating a thermal average we get [Formula Presented] at [Formula Presented].

Original languageEnglish
Number of pages1
JournalPhysical Review C - Nuclear Physics
Volume68
Issue number3
DOIs
Publication statusPublished - 2003 Jan 1

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cross sections
sum rules
pions
form factors
mesons
quantum chromodynamics
vacuum
symmetry
matrices

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Durães, Francisco O. ; Kim, Hungchong ; Lee, Su Houng ; Navarra, Fernando S. ; Nielsen, Marina. / Progress in the determination of the [Formula Presented] cross section. In: Physical Review C - Nuclear Physics. 2003 ; Vol. 68, No. 3.
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Progress in the determination of the [Formula Presented] cross section. / Durães, Francisco O.; Kim, Hungchong; Lee, Su Houng; Navarra, Fernando S.; Nielsen, Marina.

In: Physical Review C - Nuclear Physics, Vol. 68, No. 3, 01.01.2003.

Research output: Contribution to journalArticle

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