Evidence for ρ0 Mass Modification in the 3He(γ,ρ0)ppn Reaction

TAGX Collaboration

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67 Citations (Scopus)


Evidence for a modification of the ρ0 mass in the nuclear medium via the 3He(γ,π+π) X reaction is reported here. The tagged photon energies were mostly below the ρ0 production threshold on a free nucleon, and the bound nucleon’s Fermi momentum was utilized to produce the. The mass shift observed is δ0=160±35MeV/c2 and is significantly larger than theoretical model predictions for this nucleus and nuclear matter density.

Original languageEnglish
Pages (from-to)241-244
Number of pages4
JournalPhysical review letters
Issue number2
Publication statusPublished - 1998
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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