Speaker
Shoichi Sasaki
(University of Tokyo)
Description
We study the charmonium-nucleon interations at low energies by extended L¥"ushcer formula with partially twisted boundary conditions, which allows us to calculate the s-wave phase shift at any small value of the relative momentum even in a finite volume. Our exploratory studeis are carried out in quenched lattice QCD with non-perturbatively O(a)-improved Wilson fermions for light quarks and a relativistic heavy quark action for charm quark.
We have successfully evaluated both scattering lengths and effective ranges of eta_c-nucleon and J/psi-nucleon through this new approach. We also report on preliminary results calculated on 2+1 flavor PACS-CS configuration.
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Author
Shoichi Sasaki
(University of Tokyo)
Co-author
Mr
Taichi Kawanai
(University of Tokyo)
