This title appears in the Scientific Report :
2016
Please use the identifier:
http://dx.doi.org/10.1063/1.4938662 in citations.
Potential description of the charmonium from lattice QCD
Potential description of the charmonium from lattice QCD
We present spin-independent and spin-spin interquark potentials for charmonium states, that are calculated using a relativistic heavy quark action for charm quarks on the PACS-CS gauge configurations generated with the Iwasaki gauge action and 2+1 flavors of Wilson clover quark. The interquark poten...
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Personal Name(s): | Kawanai, Taichi (Corresponding author) |
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Sasaki, Shoichi | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Imprint: |
2016
|
Physical Description: |
050022 |
DOI: |
10.1063/1.4938662 |
Conference: | XITH CONFERENCE ON QUARK CONFINEMENT AND HADRON SPECTRUM, Saint Petersburg (Russia), 2014-12-08 - 2014-12-12 |
Document Type: |
Contribution to a conference proceedings |
Research Program: |
Computational Science and Mathematical Methods |
Publikationsportal JuSER |
We present spin-independent and spin-spin interquark potentials for charmonium states, that are calculated using a relativistic heavy quark action for charm quarks on the PACS-CS gauge configurations generated with the Iwasaki gauge action and 2+1 flavors of Wilson clover quark. The interquark potential with finite quark masses is defined through the equal-time Bethe-Salpeter amplitude. The light and strange quark masses are close to the physical point where the pion mass corresponds to Mπ ≈ 156(7) MeV, and charm quark mass is tuned to reproduce the experimental values of ηc and J/ψ states. Our simulations are performed with a lattice cutoff of a−1 ≈ 2.2 GeV and a spatial volume of (3 fm)3. We solve the nonrelativistic Schrödinger equation with resulting charmonium potentials as theoretical inputs. The resultant charmonium spectrum below the open charm threshold shows a fairly good agreement with experimental data of well-established charmonium states. |