Speaker
Scott Willenbrock
(University of Illinois at Urbana-Champaign)
Description
We show that the mass and width of an unstable particle are precisely defined by the pole in the complex energy plane, $\mu = m - (i/2)\Gamma$, by using the the defining relationship between the width and the lifetime, $\Gamma = 1/\tau$. We find that the physical $Z$ boson mass lies 26 MeV below its quoted value, while the physical $W$ boson mass lies 20 MeV below.
Author
Scott Willenbrock
(University of Illinois at Urbana-Champaign)
