Charmonium-nucleon potential from lattice QCD

Taichi Kawanai, Shoichi Sasaki

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)


We present results for the charmonium-nucleon potential V cc̄-N(r) from quenched lattice QCD, which is calculated from the equal-time Bethe-Salpeter amplitude through the effective Schrödinger equation. Detailed information of the low-energy interaction between the nucleon and charmonia (ηc and J/ψ) is indispensable for exploring the formation of charmonium bound to nuclei. Our simulations are performed at a lattice cutoff of 1/a 2.1GeV in a spatial volume of (3fm)3 with the nonperturbatively O(a) improved Wilson action for the light quarks and a relativistic heavy quark action for the charm quark. We have found that the potential Vcc̄-N(r) for either the ηc or J/ψ states is weakly attractive at short distances and exponentially screened at large distances. The spin averaged J/ψ-N potential is slightly more attractive than that of the ηc-N case.

Original languageEnglish
Article number091501
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number9
Publication statusPublished - 2010 Nov 3
Externally publishedYes

ASJC Scopus subject areas

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


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