D mesons in matter and the in-medium properties of charmonium

Bengt Friman, Su Houng Lee, Taesoo Song

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

We study the changes in the partial decay widths of excited charmonium states into DD̄, when the D-meson mass decreases in nuclear matter, taking the internal structure of the hadrons into account. Calculations within the 3P0 model for Ψ(3686) and Ψ(3770) imply that naive estimates of the in-medium widths based only on phase space are grossly exaggerated. Due to nodes in the wave functions, these states may even become narrow at high densities, if the D-meson mass is decreased by about 200 MeV. For the x states, we generally expect stronger modifications of the widths. The relevance of the x widths for J/Ψ suppression in heavy ion collision is discussed. These phenomena could be explored in experiments at the future accelerator facility at GSI.

Original languageEnglish
Pages (from-to)153-160
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume548
Issue number3-4
DOIs
Publication statusPublished - 2002 Nov 21

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mesons
ionic collisions
hadrons
accelerators
retarding
wave functions
decay
estimates
excitation

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

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D mesons in matter and the in-medium properties of charmonium. / Friman, Bengt; Lee, Su Houng; Song, Taesoo.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 548, No. 3-4, 21.11.2002, p. 153-160.

Research output: Contribution to journalArticle

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AB - We study the changes in the partial decay widths of excited charmonium states into DD̄, when the D-meson mass decreases in nuclear matter, taking the internal structure of the hadrons into account. Calculations within the 3P0 model for Ψ(3686) and Ψ(3770) imply that naive estimates of the in-medium widths based only on phase space are grossly exaggerated. Due to nodes in the wave functions, these states may even become narrow at high densities, if the D-meson mass is decreased by about 200 MeV. For the x states, we generally expect stronger modifications of the widths. The relevance of the x widths for J/Ψ suppression in heavy ion collision is discussed. These phenomena could be explored in experiments at the future accelerator facility at GSI.

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