Velocity dependence of the mass modifications of $\ddot{I}$ and $\ddot{I}‰$ mesons in 12 GeV $p+A$ reactions

Wataru Nakai, Kazuya Aoki, Junsei Chiba +26

This study measured the invariant mass spectra of $\ddot{I}$ and $\ddot{I}‰$ mesons in the $e^{+}{e}^{-}$ decay channel for 12 GeV (12.9 GeV/$c$) $p+\mathrm{C}$ and $p+\mathrm{Cu}$ reactions ($\sqrt{…