Two possible reasons for the narrow peak observation in the invariant mass spectrum of the pK 0 s close to 1.54 GeV/c 2 are discussed.

Turbulent fragmentation determines where and when protostellar cores form, and how they contract and grow in mass from the surrounding cloud material. This process is investigated, using numerical models of molecular cloud dynamics. Molecular cloud regions without turbulent driving sources, or where turbulence is driven on large scales, exhibit rapid and efficient star formation in a clustered ...