{
  "id": "2007.10192",
  "version": "v1",
  "published": "2020-07-16T13:09:17.000Z",
  "updated": "2020-07-16T13:09:17.000Z",
  "title": "Near-threshold $K^*(892)^+$ meson production in the interaction of $π^-$ mesons with nuclei",
  "authors": [
    "E. Ya. Paryev"
  ],
  "comment": "16 pages, will be published in Chinese Physics C. arXiv admin note: text overlap with arXiv:1910.02755",
  "categories": [
    "nucl-th",
    "hep-ph",
    "nucl-ex"
  ],
  "abstract": "We study the inclusive strange vector meson $K^*(892)^+$ production in ${\\pi^-}A$ reactions at near-threshold laboratory incident pion momenta of 1.4--2.0 GeV/c within a nuclear spectral function approach. The approach accounts for incoherent primary $\\pi^-$ meson--proton ${\\pi^-}p \\to {K^*(892)^+}\\Sigma^-$ production processes as well as the influence of the scalar $K^*(892)^+$--nucleus potential (or the $K^*(892)^+$ in-medium mass shift) on these processes. We calculate the absolute differential and total cross sections for the production of $K^*(892)^+$ mesons off carbon and tungsten nuclei at laboratory angles of 0$^{\\circ}$--45$^{\\circ}$ and at these momenta within five scenarios for the above shift. We show that the $K^*(892)^+$ momentum distributions and their excitation functions (absolute and relative) possess a high sensitivity to changes in the in-medium $K^*(892)^+$ mass shift in the low-momentum region of 0.1--0.6 GeV/c. Therefore, the measurement of such observables in a dedicated experiment at the GSI pion beam facility in the near-threshold momentum domain will allow to get valuable information on the $K^*(892)^+$ in-medium properties.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-07-16T13:09:17.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "meson production",
      "near-threshold laboratory incident pion momenta",
      "nuclear spectral function approach",
      "gsi pion beam facility",
      "interaction"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 16,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}