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Physics of Atomic Nuclei

, Volume 75, Issue 1, pp 63–75 | Cite as

Width of the ϕ meson in nuclear matter

  • A. Yu. Polyanskiy
  • M. Hartmann
  • Yu. T. KiselevEmail author
  • E. Ya. Paryev
  • M. Büscher
  • D. Chiladze
  • S. N. Dymov
  • A. A. Dzyuba
  • R. Gebel
  • V. Hejny
  • B. Kämpfer
  • I. Keshelashvili
  • V. P. Koptev
  • B. Lorentz
  • Y. Maeda
  • S. I. Merzliakov
  • S. M. Mikirtytchiants
  • M. E. Nekipelov
  • H. Ohm
  • H. Schade
  • V. Z. Serdyuk
  • A. A. Sibirtsev
  • V. Yu. Sinitsyna
  • H. J. Stein
  • H. Ströher
  • S. V. Trusov
  • Yu. V. Valdau
  • C. Wilkin
  • P. Wüstner
Elementary Particles and Fields Experiment

Abstract

The ratios of the cross sections for ϕ-meson production induced by 2.83-GeV protons on Cu, Ag, and Au nuclei to the respective cross section for C nuclei were measured at the ANKE-COSY facility in the momentum range of 0.6–1.6 GeV/c and the angular range of 0°–8°. The product ϕ mesons were identified by their decay ϕK + K . The procedure used to separate kaon pairs was described in detail, and all sources of the background and their contribution to the resulting error in the values found for the above cross-section ratios were analyzed. The A dependence of the cross section for ϕ-meson production was shown to obey the A 0.56±0.03 law. The total width of the ϕ meson at a normal nuclear density was extracted from a comparison of the measured cross-section ratios with the results of calculations based on two theoretical models. The resulting width value exceeds substantially both the vacuum width and the width expected in the absence of the nuclear-matter effect on the properties of the ϕ meson.

Keywords

Atomic Nucleus Nuclear Matter Total Width Carbon Nucleus Gold Nucleus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • A. Yu. Polyanskiy
    • 1
    • 2
  • M. Hartmann
    • 2
  • Yu. T. Kiselev
    • 1
    Email author
  • E. Ya. Paryev
    • 3
  • M. Büscher
    • 2
  • D. Chiladze
    • 2
    • 4
  • S. N. Dymov
    • 5
    • 6
  • A. A. Dzyuba
    • 7
  • R. Gebel
    • 2
  • V. Hejny
    • 2
  • B. Kämpfer
    • 8
  • I. Keshelashvili
    • 9
  • V. P. Koptev
    • 7
  • B. Lorentz
    • 2
  • Y. Maeda
    • 10
  • S. I. Merzliakov
    • 2
    • 6
  • S. M. Mikirtytchiants
    • 2
    • 7
  • M. E. Nekipelov
    • 2
  • H. Ohm
    • 2
  • H. Schade
    • 8
  • V. Z. Serdyuk
    • 2
    • 6
  • A. A. Sibirtsev
    • 2
    • 11
    • 12
  • V. Yu. Sinitsyna
    • 13
  • H. J. Stein
    • 2
  • H. Ströher
    • 2
  • S. V. Trusov
    • 8
    • 14
  • Yu. V. Valdau
    • 2
    • 7
  • C. Wilkin
    • 15
  • P. Wüstner
    • 16
  1. 1.Institute of Theoretical and Experimental PhysicsMoscowRussia
  2. 2.Institut für Kernphysik and Jülich Centrum für Hadron PhysicsJülichGermany
  3. 3.Institute for Nuclear ResearchRussian Academy of SciencesMoscowRussia
  4. 4.High Energy Physics InstituteTbilisi StateUniversityTbilisiRepublic of Georgia
  5. 5.Physikalisches Institut IIUniversität Erlangen-NürnbergErlangenGermany
  6. 6.Laboratory of Nuclear ProblemsJoint Institute of Nuclear ResearchDubna, Moscow oblastRussia
  7. 7.Department of High-Energy Physics, Petersburg Nuclear Physics InstituteRussian Academy of SciencesGatchinaRussia
  8. 8.Forschungszentrum Dresden RossendorfDresdenGermany
  9. 9.Department of PhysicsUniversity of BaselBaselSwitzerland
  10. 10.Research Center for Nuclear PhysicsOsaka UniversityIbaraki, OsakaJapan
  11. 11.Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Centre for Theoretical PhysicsUniversität BonnBonnGermany
  12. 12.Excited Baryon Analysis Center (EBAC)Thomas Jefferson National Accelerator FacilityNewport NewsUSA
  13. 13.Lebedev Institute of PhysicsRussian Academy of SciencesMoscowRussia
  14. 14.Skobeltsyn Nuclear Physics InstituteMoscow State UniversityMoscowRussia
  15. 15.Physics and Astronomy DepartmentUCLLondonUK
  16. 16.Zentralinstitut für ElektronikForschungszentrum JülichJülichGermany

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