Nuclear medium effects on the $\bar K^*$ meson
arXiv:1111.5763 · doi:10.1016/j.nuclphysa.2011.12.011
Abstract
The $\bar K^*$ meson in dense matter is analyzed by means of a unitary approach in coupled channels based on the local hidden gauge formalism. The $\bar K^*$ self-energy and the corresponding $\bar K^*$ spectral function in the nuclear medium are obtained. We observe that the $\bar K^*$ develops a width in matter up to five times bigger than in free space. We also estimate the transparency ratio of the $γA \to K^+ K^{*-} A^\prime$ reaction. This ratio is an excellent tool to detect experimentally modifications of the $\bar K^*$ meson in dense matter.
11 pages, 5 figures, contribution based on the invited talk at ECT* Workshop "Strange Hadronic Matter", September 26-30, 2011