6533b852fe1ef96bd12aae54
RESEARCH PRODUCT
Test of phi renormalization in nuclei through phi photoproduction
M. J. Vicente VacasEulogi OsetHiroshi TokiAngels Ramossubject
PhysicsNuclear and High Energy PhysicsParticle physicsMass distributionMesonNuclear TheoryNuclear TheoryFOS: Physical sciencesFísicaNuclear matterNuclear Theory (nucl-th)Many-body problemMomentumNuclear physicsRenormalizationHigh Energy Physics::ExperimentInvariant massCenter of massNuclear Experimentdescription
We propose an experimental procedure to find out the medium modifications of the $\phi$ meson. The reaction is inclusive $\phi$ photoproduction in nuclei, looking for $K^+ K^-$ pairs from the $\phi$ decay with total momentum smaller than 100-150 $MeV/c$, which are made possible at energies of present laboratories from center of mass $\phi$ backward production and the help of Fermi motion. We have conducted a many body calculation of the mass distribution of the $\phi$ adapted to the experimental set up of a recent JLAB experiment where the backwards $\phi$ photoproduction has been measured. Using recent results for the in medium properties of the $\phi$, we find that the width of the invariant mass distribution for photoproduction on medium to heavy nuclei is larger than the free $\phi$ width by a factor of two or more.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-11-06 |