Spectroscopic parameters and electromagnetic form factor of kaon in vacuum and a dense medium

The spectroscopic parameters as well as electromagnetic form factor of the strange particle kaon are investigated in vacuum and a medium with finite density. The obtained vacuum mass and decay constant, which are consistent with the existing experimental results, are used to extract the Q(2) dependence of the kaon electromagnetic form factor in the interval Q(2) is an element of [0, 10] GeV2 in vacuum. The obtained results at lower and intermediate values of Q(2) are consistent with the existing experimental data within the presented uncertainties. The Q(2) behavior of the electromagnetic form factor of kaon in vacuum and in the interval Q(2) is an element of [0, 6] GeV2 is in a nice agreement with the existing predictions of the Lattice QCD and the solution of the Bethe-Salpeter equation for the model of Nambu and Jona-Lasinio (NJL) with propertime regularization, as well. The obtained vacuum radius for kaon is also in a nice agreement with the world's average experimental result. We extend the analyses to a medium with higher densities and obtain the behavior of the mass, decay constant, electromagnetic form factor and radius with respect to density. The obtained results for some of the parameters are compared with the existing predictions of other models and approaches. The results obtained in the present study can be useful for future experimental and theoretical studies both in vacuum and a dense medium.

Automated summary

The spectroscopic parameters and electromagnetic form factor of the strange particle kaon are investigated in both vacuum and a medium with finite density. The study provides consistent results with existing experimental data for the vacuum mass and decay constant of the kaon. The behavior of the kaon's electromagnetic form factor is found to be in agreement with predictions from lattice QCD and the Nambu-Jona-Lasinio model, as well as with experimental results for the vacuum radius. The study also explores the effects of higher densities on various parameters and provides comparisons with predictions from other models and approaches. These findings are important for future experimental and theoretical studies in both vacuum and dense media.