Light quark mass dependence in heavy quarkonium physics
arXiv:1203.1116 · doi:10.1103/PhysRevLett.109.062001
Abstract
The issue of chiral extrapolations in heavy quarkonium systems is discussed. We show that the light quark mass dependence of the properties of heavy quarkonia is not always suppressed. For quarkonia close to an open flavor threshold, even a nonanalytic chiral extrapolation is needed. Both these nontrivial facts are demonstrated to appear in the decay widths of the hindered M1 transitions between the first radially excited and ground state P-wave charmonia. The results at a pion mass of about 500 MeV could deviate from the value at the physical pion mass by a factor of two. Our findings show the necessity of performing chiral extrapolations for lattice simulations of heavy quarkonium systems.
5 pages, 5 figures. Version to appear in Phys. Rev. Lett
References in corpus (16)
- Heavy quarkonium: progress, puzzles, and opportunities
- Higher Charmonia and X,Y,Z states with Screened Potential
- Pion Interactions in the X(3872)
- Charmonium excited state spectrum in lattice QCD
- Hadron Loops: General Theorems and Application to Charmonium
- Effect of charmed meson loops on charmonium transitions
- Exotic and excited-state radiative transitions in charmonium from lattice QCD
- Decay channels and charmonium mass-shifts
- Subleading contributions to the width of the D_{s0}*(2317)
- Chiral extrapolations of baryon masses for unquenched three-flavor lattice simulations
- Bottomonium spectrum at order v^6 from domain-wall lattice QCD: precise results for hyperfine splittings
- Light meson mass dependence of the positive parity heavy-strange mesons
- Novel analysis of the decays psi' -> h_c pi^0 and eta_c'-> chi_{c0} pi^0
- Hadronic loop contributions to and radiative decays into or
- The mass of the Delta resonance in a finite volume: fourth-order calculation
- Electromagnetic moments of quasi-stable particle