{
  "id": "1710.02463",
  "version": "v1",
  "published": "2017-10-06T15:51:30.000Z",
  "updated": "2017-10-06T15:51:30.000Z",
  "title": "A Second Look at String-Inspired Models for Proton-Proton Scattering via Pomeron Exchange",
  "authors": [
    "Ziyi Hu",
    "Brian Maddock",
    "Nelia Mann"
  ],
  "comment": "16 pages, 7 figures, 2 tables",
  "categories": [
    "hep-ph",
    "hep-th"
  ],
  "abstract": "We re-examine a string dual model for elastic proton-proton scattering via Pomeron exchange. We argue that the method of \"Reggeizing\" a propagator to take into account an entire trajectory of exchanged particles can be generalized, in particular by modifying the value of the mass-shell parameter in the model. We then fit the generalized model to scattering data at large s and small t. The fitting results are inconclusive, but suggest that a better fit might be obtained by allowing the mass-shell to vary. The model fits the data equally well (roughly) for a wide range of values of the mass-shell parameter, but the other fitting parameters (the slope and intercept of the Regge trajectory, and the coupling constant and dipole mass from the proton-proton-glueball coupling) are then inconsistent with what we expect. On the other hand, using the traditional method of Reggeization generates a weaker fit, but the other parameters obtain more physically reasonable values. In analyzing the fitting results, we also found that our model is more consistent with the sqrt(s) = 1800 GeV coming from the E710 experiment than that coming from the CDF experiment, and that our model has the greatest discrepancy with the data in the range 0.5 GeV^2 < |t| < 0.6 GeV^2, suggesting that the transition from soft Pomeron to hard Pomeron may occur closer to t = -0.5 GeV^2 rather than t = -0.6 GeV^2 as previously thought.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-10-06T15:51:30.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "pomeron exchange",
      "proton-proton scattering",
      "second look",
      "string-inspired models",
      "mass-shell parameter"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 16,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}