{
  "id": "1512.08678",
  "version": "v1",
  "published": "2015-12-29T13:39:53.000Z",
  "updated": "2015-12-29T13:39:53.000Z",
  "title": "$ρ$ and $K^*$ resonances on the lattice at nearly physical quark masses",
  "authors": [
    "Gunnar S. Bali",
    "Sara Collins",
    "Antonio Cox",
    "Gordon Donald",
    "Meinulf Göckeler",
    "C. B. Lang",
    "Andreas Schäfer"
  ],
  "comment": "14 pages, 8 figures",
  "categories": [
    "hep-lat",
    "hep-ph"
  ],
  "abstract": "Working with a pion mass $m_\\pi \\approx 150$ MeV, we study $\\pi\\pi$ and $K\\pi$ scattering using two flavours of non-perturbatively improved Wilson fermions at a lattice spacing $a\\approx 0.071$ fm. Employing two lattice volumes with linear spatial extents of $N_s=48$ and $N_s=64$ points and moving frames, we extract the phase shifts for p-wave $\\pi\\pi$ and $K\\pi$ scattering near the $\\rho$ and $K^*$ resonances.Comparing our results to those of previous lattice studies, that used pion masses ranging from about 200 MeV up to 470 MeV, we find that the coupling $g_{\\rho\\pi\\pi}$ appears to be remarkably constant as a function of $m_{\\pi}$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-12-29T13:39:53.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "physical quark masses",
      "resonances",
      "pion mass",
      "linear spatial extents",
      "lattice studies"
    ],
    "publication": {
      "doi": "10.1103/PhysRevD.93.054509"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1411662
    }
  }
}