Vector Mesons in Nuclear Medium -- an Effective Lagrangian Approach --

Details Vector Mesons in Nuclear Medium -- an Effective Lagrangian Approach -- Vector Mesons in Nuclear Medium -- an Effective Lagrangian Approach --

1994-04-26

arxiv.org/abs/hep-ph/9404337v1

Phys.Lett. B334 (1994) 281-286

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX 9 pages, 3 figures are available on request, report UTHEP-276

Scientific paper

10.1016/0370-2693(94)90688-2

Effective masses of $\rho$ and $\omega$ mesons in nuclear medium are studied in a hadronic effective theory. Both the pole position and the screening mass decrease in nuclear matter due to the polarization of the nucleon Dirac sea. The physical origin of the decrease is a reduction of the wave function renormalization constant induced by the tensor (vector) interaction of the $\rho$ ($\omega$) with the nucleon. Relation to the results of the QCD sum rules is also discussed.

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