Medium Modifications of Light Vector Mesons in Nuclei(Change of hadron properties in medium, Chiral dynamics in nuclear medium, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)

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概要

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• Preliminary results on the photoproduction of light vector mesons in nuclei using the Cebaf Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory are presented. The ρ, ω, and φ mesons are clearly observed via their decay to e^+e^-. This decay channel reduces the effects of final state interactions in the nucleus. Of particular interest are the possible in-medium effects on the properties of the ρ meson. The ρ mass spectrum is extracted from the data on various nuclei, carbon, iron, and titanium, and compared to the spectrum from deuterium, which is relatively free of nuclear effects. No effects on the mass of the ρ meson are observed, however, there is some widening of the resonance in titanium and iron, which is consistent with expected collisional broadening.

• 理論物理学刊行会の論文
• 2007-11-09

著者

• Wood Mike

  University Of Massachusetts

• Weygand Dennis

  Thomas Jefferson Accelerator Facility

• Djalali Chaden

  Physics Department, University of South Carolina

• Nasseripour Rakhsha

  Physics Department, University of South Carolina

関連論文

• Medium Modifications of Light Vector Mesons in Nuclei(Change of hadron properties in medium, Chiral dynamics in nuclear medium, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)

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