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EXA 2011 pp 209-213 | Cite as

Momentum dependence of hadronic production of the ϕ-meson and its width in nuclear matter

  • Michael HartmannEmail author
  • Burkhard Kämpfer
  • Yury T. Kiselev
  • Vacas K. Magas
  • Eduard Ya. Paryev
  • Andrey Polyanskiy
  • Luis Roca
  • Henry Schade
  • Colin Wilkin
Conference paper

Abstract

Information on the properties of the ϕ meson in the nuclear environment has been derived from its production in proton collisions with C, Cu, Al, and Au nuclear targets. The experiment was carried out with 2.83 GeV protons at the Cooler Synchrotron COSY, with the ϕ being detected via its K  +  K − decay using the ANKE magnetic spectrometer. The measured dependence of the production cross section on the nuclear mass number has been compared with calculations within three different nuclear models. These suggest a significant broadening of the width of the ϕ in medium relative to its vacuum value. The ANKE results obtained in the momentum range 0.6 < p ϕ  < 1.6 GeV/c are compared with data from photoproduction experiments at slightly higher momenta.

Keywords

ϕ meson production Nuclear medium effects 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Michael Hartmann
    • 1
    Email author
  • Burkhard Kämpfer
    • 2
  • Yury T. Kiselev
    • 3
  • Vacas K. Magas
    • 4
  • Eduard Ya. Paryev
    • 5
  • Andrey Polyanskiy
    • 1
    • 3
  • Luis Roca
    • 6
  • Henry Schade
    • 2
    • 7
  • Colin Wilkin
    • 8
  1. 1.Institut für Kernphysik and Jülich Centre for Hadron PhysicsForschungszentrum JülichJülichGermany
  2. 2.Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-RossendorfDresdenGermany
  3. 3.Institute for Theoretical and Experimental PhysicsMoscowRussia
  4. 4.Departament d’Estructura i Constituents de la Matèria and Institut de Ciències del CosmosUniversitat de BarcelonaBarcelonaSpain
  5. 5.Institute for Nuclear ResearchRussian Academy of ScienceMoscowRussia
  6. 6.Departamento de FisicaUniversidad de MurciaMurciaSpain
  7. 7.Institut für Theoretische PhysikTU DresdenDresdenGermany
  8. 8.Physics and Astronomy DepartmentUCLLondonUK

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