The primordial beryllium-9 abundance from metal-poor stars exhibits unexpectedly low or variable values inconsistent with standard ΛCDM BBN predictions when fitted within a single baryon-density framework (Cyburt 2016; Fields 2011). The observed Be-9 abundance does not fit alongside other light-element constraints under ΛCDM nucleosynthesis without invoking systematic measurement errors or non-standard nuclear physics.
The standard model assumes Be-9 is produced primordially in trace amounts during BBN. The observed Be-9 abundance in metal-poor stars conflicts with this primordial-only origin, demanding either systematic errors in stellar abundance measurements, non-standard nuclear physics for Be-9 production, or significant non-primordial contribution that the model has no clean source for.
SCT replaces the hot-dense-center with a superluminal collision and the thermalized debris field. From this single change, Be-9 anomalies are explained by recognizing that observable stellar Be-9 has multiple in-cycle origins beyond primordial BBN. The cascade thermalization at temperatures above the QCD scale erases all complex nuclei from prior cycles (P22, P23). After cascade termination (P40), BBN proceeds standard (P42) and produces the trace primordial Be-9 expected.
However, the observable Be-9 in metal-poor stars also includes in-cycle production through cosmic-ray spallation reactions on cascade-thermalized gas in cascade-stream environments. Cascade-seeded SMBH (P46) plus cascade-stream filament infrastructure (P34) provide the ongoing accelerator environments for spallation reactions across cosmic time. The combination of standard BBN floor + cascade-context-driven cosmic-ray spallation gives the observable Be-9 distribution, naturally producing the variable + locally enhanced abundances seen in metal-poor stars.
Pre-existing matter from prior cycles (P25, P28) does NOT supply pre-existing Be-9 to our cycle (the cascade thermalization erased it), so observable Be-9 is fully in-cycle production. The same M11 framework that resolves the metallicity floor (recid 125: in-cycle-produced metals, not inherited), the JADES-GS-z14-0 oxygen abundance (recid 113), and the broader in-cycle nucleosynthesis phenomenology accounts for Be-9 as an in-cycle cascade-context product. There is no need to invoke non-standard primordial nuclear physics.
If precision deep stellar Be-9 spectroscopy + cosmic-ray spallation cross-sections find the observed Be-9 distribution fully consistent with primordial BBN-only origin at the 5% level (no in-cycle spallation contribution), the M11 in-cycle production explanation is refuted. The signature SCT prediction is Be-9 abundance varying with stellar environment in ways that trace cosmic-ray spallation history rather than primordial-BBN-only patterns.