A theoretical particle physicist who proposed an early grand unified theory mechanism for baryogenesis. His 1978 paper asks whether reactions violating baryon number in the early universe could account for the excess of matter over antimatter. It connects a measurable cosmic asymmetry to particle reactions at much higher energies than laboratory experiments can directly reach.[ref]
Unified Gauge Theories and the Baryon Number of the Universe by Motohiko Yoshimura. Abstract: baryon-number-violating early-universe reactions; source record includes 1979 erratum
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