Cosmological implications of long-lived charged massive particle and its detectability in LHC

by Kazunori Kohri

Thursday 6 Mar 2008, 14:15 → 15:15 Europe/London

OC218

Recent observations have suggested that 23 % of the cosmic energy density is governed by dark matter. Because the Universe is neutral, it might be reasonable to assume that the dark matter should be neutral. In the framework of present particle physics models including supersymmetry, a neutral lightest supersymmetric particle (LSP) would be the most attractive candidate. However, there is a possibility that the next lightest supersymmetric particle (NLSP) can be charged and long-lived. In this talk, I will discuss the charged NLSP's implication to Big-Bang Nucleosynthesis (BBN), Large Scale Structure (LSS) and Cosmic Microwave Background (CMB) and its detectability in collider experiments such as Large Hadron Collider (LHC).