Statistical analysis of a ‘‘cold fusion’’ experiment

Yagi et al. recently have claimed that neutrons from the D+D reaction are emitted in Ti and in SiO2 systems in which D2 is trapped at ∼1 atm at liquid nitrogen temperature. A statistical analysis of the data shows that the background counts observed over 58 time intervals do not follow the expected Poisson distribution. This would invalidate the interpretation of the results.