The Minimal Standard Model allows baryon number violation via nonperturbative physics which is extremely inefficient at low temperatures (< 20 GeV) but much more efficient at high temperatures T > m_H, m_W. How efficient? Good question! I will discuss the effective theory which sets the rate, and exactly what physics is involved. Details will get `grubby' but I will try to keep it at the level of `physical, not technical'.

Tuesday, March 23rd 1999, 13:00
Ernest Rutherford Physics Building, Preprint room