Abstract
An analysis of regeneration data from Fermilab in the energy range 30-110 GeV has been carried out to determine the mass difference , the lifetime , and the -violation parameter . We find that the average values of , , , and at Fermilab energies differ from the accepted low-energy (∼5 GeV) values by approximately 4, 2, 3, and 9 standard deviations, respectively. As a consequence of the discrepancy between low-energy and high-energy values, an investigation of a possible energy dependence of the parameters was carried out. Using two different methods, the parameters were fitted to a form where is any of the parameters , , , and , is the usual relativistic factor, and . The resulting slope parameters differ from zero by 0-4 standard deviations depending on the parameter and on whether the low-energy value is included. The details of the fits are presented here, and a discussion is also given of new experiments which could check and extend the present results.
- Received 2 December 1982
DOI:https://doi.org/10.1103/PhysRevD.28.476
©1983 American Physical Society