Is the weak interaction constant really constant?

摘要

A comparison is made of the probability of the process of two neutrino double-beta decay for ~(82)Se and ~(96)Zr in direct (counter) and geochemical experiments. The experimental data for ~(130)Te are also analyzed. It is shown that the probability is systematically lower in geochemical experiments, which characterize the probability of ββ(2ν) decay a few billions years ago. In addition geochemical measurements on young minerals give lower values of T_(1/2)(~(130)Te) as compared to measurements on old minerals. It is proposed that this could be due to a change in the weak interaction constant with time. The possibilities of news precise measurements to be performed with the aid of counters and geochemical experiments are discussed. A new geochemical experiments with ~(100)Mo is proposed.