TY - GEN
T1 - Potential description of the charmonium from lattice QCD
AU - Kawanai, Taichi
AU - Sasaki, Shoichi
N1 - Publisher Copyright:
© 2016 AIP Publishing LLC.
PY - 2016/1/22
Y1 - 2016/1/22
N2 - 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.
AB - 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.
KW - Lattice QCD calculations
KW - Lattice gauge theory
KW - Quantum chromodynamics
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U2 - 10.1063/1.4938662
DO - 10.1063/1.4938662
M3 - Conference contribution
AN - SCOPUS:84984536011
T3 - AIP Conference Proceedings
BT - XIth Conference on Quark Confinement and Hadron Spectrum
A2 - Brambilla, Nora
A2 - Kolevatov, Sergei
A2 - Andrianov, Alexander
A2 - Kim, Victor
PB - American Institute of Physics Inc.
T2 - 11th Conference on Quark Confinement and Hadron Spectrum
Y2 - 8 September 2014 through 12 September 2014
ER -