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: $\tilde{\ddot{I}}{‡}_i^0\tilde{\ddot{I}}{‡}_j^0\to e^{+}{e}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}\tilde{\ddot{I}}{‡}_1^0\tilde{\ddot{I}}{‡}_1^0$ ($i,j=2,3,4$) and ${\tilde{\ddot{I}}{‡}_1}^{\pm }{\tilde{\ddot{I}}{‡}_2}^0\to {W^{\pm }}^{\ast }(\to {\ell }^{\pm }\hat{I}½){\tilde{\ddot{I}}{‡}_1}^0{Z^0}^{\ast }(\to {\ell }^{\pm }{\ell }^{\mp }){\tilde{\ddot{I}}{‡}_1}^0$.

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