**3. Conclusions**

We studied whether the allowance for the SFHA can eliminate, or at least reduce, the noticeable discrepancy between the experimental and theoretical cross-sections of charge exchange involving hydrogen atoms and low energy protons: the discrepancy where the experimental cross-sections are systematically slightly higher than the corresponding theoretical cross-sections. We showed that, for the SFHA, the theoretical cross-sections are noticeably greater than for the usual hydrogen atoms. We demonstrated that the allowance for the SFHA leads to a noticeably better agreemen<sup>t</sup> with the experiments: the agreemen<sup>t</sup> with experiments within the experimental error margins.

This seems to constitute ye<sup>t</sup> more evidence from atomic experiments that the SFHA is present within the mixture of hydrogen atoms. In combination with the first corresponding piece of evidence from the analysis of atomic experiments (presented in paper [6]), as well as with the astrophysical evidence from two different kinds of observations [9,11], the results of the present paper reinforce the status of the SFHA as the candidate for dark matter, or at least for a part of it.

Compared to other explanations of dark matter effects, the SFHA is favored by the Occam's razor principle. Indeed, it is based on the standard quantum mechanics (the Dirac equation), whereas other hypotheses either resort to mysterious, never-discovered particles beyond the standard model or require significant changes in the existing physical laws.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not Applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** All data is included in the paper.

**Conflicts of Interest:** The author declares no conflict of interest.
