Speaker
Description
While the $\phi$ meson vacuum properties, such as mass and width, are well known,
it is not clear how these properties will change once it is put in a dense
environment such as nuclear matter.
Theoretically, many works have been conducted with the aim of studying the $\phi$
meson in nuclear matter. Connecting theoretical results with experimental
measurements is, however, not a trivial task, as the $\phi$ meson in nuclear matter is
usually produced in relatively high-energy pA reactions, which are generally
non-equilibrium processes.
In this presentation I will report on an ongoing project [1], attempting to simulate
pA reactions in which the $\phi$ meson is produced in nuclei, making use
of a transport approach [2]. Results of simulations of 12 GeV/30 GeV p+C and p+Cu
reactions will be presented and comparisons between obtained dilepton spectra
and experimental data of the E325 experiment at KEK [3] will be made.
Furthermore, predictions for the ongoing J-PARC E16 experiment [4] for both
dilepton and $K^+K^-$ spectra will be given and discussed.
[1] P. Gubler and E. Bratkovskaya, in progress.
[2] W. Cassing and E.L. Bratkovskaya, Nucl. Phys. A 831, 215 (2009).
[3] R. Muto et al., Phys. Rev. Lett. 98, 042501 (2007).
[4] S. Ashikaga et al., (J-PARC E16 Collaboration), JPS Conf. Proc. 26, 024005 (2019).
| Present via | Online |
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