Glueball production in hadron and nucleus collisions
The present discussion focusses on the dominant production of the 0++ glueball in central collisions in the suppressed yet observable channel 0++ --> pi+ pi- l+ l-.
hep-ph↗
arXiv subjects
S. Kabana
Publications and source records attributed to S. Kabana.
Glueball production in hadron and nucleus collisions
We elaborate on the hypothesis that in high energy hadron hadron and nucleus nucleus collisions the lowest mass glueballs are copiously produced from the gluon rich environment especially at high energy density. We discuss the particular glueball decay modes: $0^{++}, 2^{++} \to K \bar{K}$ and $0^{++} \to π^{+} π^{-} \ell^{+} \ell^{-}$.
hep-ph↗
Subthreshold K+ production in deuteron and alpha induced nuclear reactions
Double differential cross sections have been measured for pi+ and K+ emitted around midraidity in d+A and He+A collisions at a beam kinetic energy of 1.15 GeV/nucleon. The total pi+ yield increases by a factor of about 2 when using an alpha projectile instead of a deuteron whereas the K+ yield increases by a factor of about 4. According to transport calculations, the K+ enhancement depends both on the number of hadron-hadron collisions and on the energy available in those collisions: their center-of-mass energy increases with increasing number of projectile nucleons.
nucl-ex↗