Comments on a Massless Neutralino

Abstract

We consider first an interesting connection between the development of physics and the Boston Red Sox. We then discuss in detail the collider phenomenology, as well as precision electroweak observables of a very light neutralino. We conclude by considering also the astrophysics and cosmology of a very light neutralino. We find that a massless neutralino is consistent with all present data.

Comments: 8 pages, 11 figures, based on talk given at SUSY 09, submitted to proceedings, reference added