How did everything begin? It's a question that humans have pondered for thousands of years. Over the last century or so, ...

Posik, et al., Phys. Rev. Lett. 113 (2014) 022002. 4) Spin-dependent cross sections from the three-body photodisintegration of He3 at incident energies of 12.8 and 14.7 MeV, G. Laskaris, et al., Phys.