Multiple studies support the standard astrophysical consensus that core-collapse supernovae originate from massive stars with a lower mass cutoff of approximately eight solar masses.
The claim states that the lower mass cutoff for core-collapse supernovae is around eight solar masses. Paper [1] estimates the minimum mass at roughly 7.33 solar masses, and Paper [6] references the standard $\ge 8 M_{\odot}$ threshold for massive stars undergoing core-collapse. The remaining papers are tangential or unrelated to this specific mass threshold. Therefore, the evidence clearly supports the claim.