Hosted by: Xin Qian

Dark Matter could be composed of an as-yet-undiscovered stable or essentially stable, neutral B=2 hadron composed of uuddss quarks. How such a particle, designated S for Sexaquark and to distinguish from the loosely bound di-Lambda called H-dibaryon, can be compatible with current knowledge is explained. The S is absolutely stable if m_S < 2 m_p+ 2 m_e. If m_S > 2 m_p+ 2 m_e but < m_p+m_e + m_Lambda, its lifetime could be longer than the age of the Universe. Experiments are proposed to discover and measure the mass of the proposed particle. To first approximation it behaves like standardl Cold Dark Matter, but some distinctive differences may help explain some puzzles about DM at galactic scales.