We measure the mass of the τ to be 1775.1 ± 1.6(m(cn/stat.)) ± 1.0(m(cn/sys.)) MeV using τ from Z0 decays. To test CPT invariance we compare the masses of the positively and negatively charged τ. The relative mass difference is found to be smaller than 3.0 × 10-3 at the 90% confidence level.
|Number of pages||9|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Oct 26 2000|