Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1997-08-05
Nucl.Phys. A632 (1998) 109-127
Physics
Nuclear Physics
Nuclear Theory
27 pages, LaTex, 15 figures using epsfig.sty, submitted to Nuclear Physics A. Typos corrected in eq. (28) and table 1
Scientific paper
10.1016/S0375-9474(98)00803-3
We calculate the modification of a rho meson in nuclear matter through its coupling to resonance-hole states. Starting from a recently proposed model, we include all four star resonances up to 1.9 GeV. In contrast to previous works, we include not only resonances that couple to the rho in a relative p-wave, but also those that couple to an s-wave state. In addition, we solve the equation for the rho spectral function self-consistently. We find that s-wave resonances affect the in medium spectral function of the rho strongly. In the transverse channel the rho meson is, especially at non zero momentum, completely washed out and can in the presence of nuclear matter no longer be viewed as a resonant excitation of the vacuum. Instead, our model shows a continuum of possible excitations with the quantum numbers of a transversely polarized rho. In the longitudinal channel, however, the rho retains its resonant character in our calculation. As a consequence of the self-consistent treatment we also find a strong enhancement of the widths of the included nucleon resonances in medium.
Lenske Horst
Leupold Stefan
Mosel Ulrich
Peters Wolfram
Post Marcus
No associations
LandOfFree
The Spectral Function of the Rho Meson in Nuclear Matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Spectral Function of the Rho Meson in Nuclear Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Spectral Function of the Rho Meson in Nuclear Matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-550650