Influences on the triple alpha process beyond the Hoyle state

The triple alpha process is studied using indirect methods. The beta decays of 12 N and 12 B are used to probe the triple alpha continuum of 12 C. Different independent breakup channels are identified, consistently showing that the 10 MeV strength is dominated by a 0 + state interfering with the Hoyle state ghost. The 13-14 MeV region on the other hand is dominated by a 2 + state.