Before revision:  Another principle discovered upon regular variation theory is that the per-packet backoff has a truncated  Pareto-type tail distribution with an exponent of (\log \gamma)/\log m (m is the multiplicative factor).
After revision:  Another principle discovered upon regular variation theory is that the per-packet backoff has a truncated backoff times have a truncated Pareto-type tail distribution with an exponent of (\log \gamma)/\log m (m is the multiplicative factor).