Progress in the determination of the J/ ψ-π cross section

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

Progress in the determination of the J/ ψ-π cross section

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

Improving previous calculations, we compute the J/ψπ→ charmed meson cross section using QCD sum rules. Our sum rules for the J/ ψπ→ D̄D*, DD̄*, D̄*D*, and D̄D 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 〈 σ ^πJ/ψv〉∼0.3 mb at T = 150 MeV.

Original language	English
Article number	035208
Pages (from-to)	352081-3520811
Number of pages	3168731
Journal	Physical Review C - Nuclear Physics
Volume	68
Issue number	3
Publication status	Published - 2003 Sept

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Cite this

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title = "Progress in the determination of the J/ ψ-π cross section",

abstract = "Improving previous calculations, we compute the J/ψπ→ charmed meson cross section using QCD sum rules. Our sum rules for the J/ ψπ→ {\=D}D*, D{\=D}*, {\=D}*D*, and {\=D}D 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 〈 σ πJ/ψv〉∼0.3 mb at T = 150 MeV.",

author = "Dur{\~a}es, {Francisco O.} and Hungchong Kim and Lee, {Su Houng} and Navarra, {Fernando S.} and Marina Nielsen",

year = "2003",

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T1 - Progress in the determination of the J/ ψ-π cross section

AU - Durães, Francisco O.

AU - Kim, Hungchong

AU - Lee, Su Houng

AU - Navarra, Fernando S.

AU - Nielsen, Marina

PY - 2003/9

Y1 - 2003/9

N2 - Improving previous calculations, we compute the J/ψπ→ charmed meson cross section using QCD sum rules. Our sum rules for the J/ ψπ→ D̄D*, DD̄*, D̄*D*, and D̄D 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 〈 σ πJ/ψv〉∼0.3 mb at T = 150 MeV.

AB - Improving previous calculations, we compute the J/ψπ→ charmed meson cross section using QCD sum rules. Our sum rules for the J/ ψπ→ D̄D*, DD̄*, D̄*D*, and D̄D 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 〈 σ πJ/ψv〉∼0.3 mb at T = 150 MeV.

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ER -

Progress in the determination of the J/ ψ-π cross section

Abstract

All Science Journal Classification (ASJC) codes

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