Induced Long-Range Dipole-Field-Enhanced Antihydrogen Formation in the p̅  +  Ps(n  =  2)  →  e^-  +  H̅ (n  ≤ 2) Reaction

We report high-precision calculations that correctly include the rearrangement channels by solving the modified Faddeev equations for energies between the Ps(n  =  2) and H̅ (n  =  3) thresholds, which involve six and eight open channels. We find that 99% of the antihydrogen is formed in H̅ (n  =  2). Just above the Ps(n  =  2) threshold the S, P, and D partial waves contribute nearly 1400πa₀² near the maximum. We find evidence that the induced long-range dipole potential is responsible for such a large H̅ formation cross section. The possibility of utilizing this resonance to synthesize low-energy H̅ is discussed.