Charmonium production in antiproton-nucleus reactions at low energies

A. B. Larionov, M. Bleicher, A. Gillitzer, Mark Strikman

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The J/Ψ(1S) and Ψ(2S) production near threshold in antiproton-nucleus reactions is calculated on the basis of the Glauber model. The model takes into account the antiproton (pre-)absorption, proton Fermi motion, and charmonium formation length. We confirm an earlier prediction that the charmonium production in p̄A collisions at plab=3-10 GeV/c is not influenced by formation length effects and is very well suited to determine the genuine charmonium-nucleon dissociation cross sections. The comparison is performed with the J/Ψ photoproduction at high energies, where formation length effects play a very important role. However, we demonstrate that the detailed structure of the proton and neutron density profiles has to be taken into account if one wants to extract information on the J/ΨN dissociation cross section from J/Ψ transparency ratios. These studies are relevant for the upcoming PANDA experiment at the Facility for Antiproton and Ion Research.

Original languageEnglish (US)
Article number054608
JournalPhysical Review C - Nuclear Physics
Volume87
Issue number5
DOIs
StatePublished - May 13 2013

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antiprotons
nuclei
dissociation
cross sections
photoproduction
energy
neutrons
collisions
thresholds
protons
profiles
predictions
ions

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

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abstract = "The J/Ψ(1S) and Ψ′(2S) production near threshold in antiproton-nucleus reactions is calculated on the basis of the Glauber model. The model takes into account the antiproton (pre-)absorption, proton Fermi motion, and charmonium formation length. We confirm an earlier prediction that the charmonium production in p̄A collisions at plab=3-10 GeV/c is not influenced by formation length effects and is very well suited to determine the genuine charmonium-nucleon dissociation cross sections. The comparison is performed with the J/Ψ photoproduction at high energies, where formation length effects play a very important role. However, we demonstrate that the detailed structure of the proton and neutron density profiles has to be taken into account if one wants to extract information on the J/ΨN dissociation cross section from J/Ψ transparency ratios. These studies are relevant for the upcoming PANDA experiment at the Facility for Antiproton and Ion Research.",
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Charmonium production in antiproton-nucleus reactions at low energies. / Larionov, A. B.; Bleicher, M.; Gillitzer, A.; Strikman, Mark.

In: Physical Review C - Nuclear Physics, Vol. 87, No. 5, 054608, 13.05.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Charmonium production in antiproton-nucleus reactions at low energies

AU - Larionov, A. B.

AU - Bleicher, M.

AU - Gillitzer, A.

AU - Strikman, Mark

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N2 - The J/Ψ(1S) and Ψ′(2S) production near threshold in antiproton-nucleus reactions is calculated on the basis of the Glauber model. The model takes into account the antiproton (pre-)absorption, proton Fermi motion, and charmonium formation length. We confirm an earlier prediction that the charmonium production in p̄A collisions at plab=3-10 GeV/c is not influenced by formation length effects and is very well suited to determine the genuine charmonium-nucleon dissociation cross sections. The comparison is performed with the J/Ψ photoproduction at high energies, where formation length effects play a very important role. However, we demonstrate that the detailed structure of the proton and neutron density profiles has to be taken into account if one wants to extract information on the J/ΨN dissociation cross section from J/Ψ transparency ratios. These studies are relevant for the upcoming PANDA experiment at the Facility for Antiproton and Ion Research.

AB - The J/Ψ(1S) and Ψ′(2S) production near threshold in antiproton-nucleus reactions is calculated on the basis of the Glauber model. The model takes into account the antiproton (pre-)absorption, proton Fermi motion, and charmonium formation length. We confirm an earlier prediction that the charmonium production in p̄A collisions at plab=3-10 GeV/c is not influenced by formation length effects and is very well suited to determine the genuine charmonium-nucleon dissociation cross sections. The comparison is performed with the J/Ψ photoproduction at high energies, where formation length effects play a very important role. However, we demonstrate that the detailed structure of the proton and neutron density profiles has to be taken into account if one wants to extract information on the J/ΨN dissociation cross section from J/Ψ transparency ratios. These studies are relevant for the upcoming PANDA experiment at the Facility for Antiproton and Ion Research.

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