Hidden Thresholds: Reconstructing NP Masses

Abstract

The Hidden Thresholds technique reconstructs New Physics (NP) masses from two or more simultaneous NP decays at a hadron collider. We show how this works in several MSSM examples: ${\tilde{\chi }}_i^0{\tilde{\chi }}_j^0\to e^{+}{e}^{-}{\mu }^{+}{\mu }^{-}{\tilde{\chi }}_1^0{\tilde{\chi }}_1^0$ ($i,j=2,3,4$) and ${{\tilde{\chi }}_1}^{\pm }{{\tilde{\chi }}_2}^0\to {W^{\pm }}^{\ast }(\to {\ell }^{\pm }\nu ){{\tilde{\chi }}_1}^0{Z^0}^{\ast }(\to {\ell }^{\pm }{\ell }^{\mp }){{\tilde{\chi }}_1}^0$.

Comments: Parallel talk at ICHEP08, Philadelphia, USA, July 2008. 4 pages, 3 figures