“…For several cases, studied in our laboratories 21,[24][25][26]28,29,32,33,37,62 as well as in others, 30,44,45,47,48,53,54,62 detailed quantum-state resolved distributions of the vibrational and rotational energy of the MH(v,N) products in exit-channel ͑1a͒ have also been determined using laser pump-probe techniques. A variety of mechanisms, 1-62 at various levels of detail, have been proposed over the years to explain both the dominant products observed ͓͑1a͒, ͑1b͒, or ͑1c͔͒ and the distributions of MH(v,N) energies when process ͑1a͒ occurs.…”