2004/09/24 by Koichi Hamaguchi, Y. Kuno, Yoshitaka Kuno +3 · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Particle physics theoretical and experimental studies #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.70.115007
published as Phys.Rev.D70:115007,2004 · 22 pages, 9 figures. v2: Comments and references are added
arxiv created 2004/09/24 · openalex publication_date 2004/12/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In models where the gravitino is the lightest supersymmetric particle, the next-to-lightest supersymmetric particle (NLSP) is long-lived. We consider an important charged NLSP candidate, the scalar tau \stackrel\texttildelow\ensuremathτ. Slow charged NLSPs may be produced at future colliders and they may be stopped in a massive stopper which simultaneously serves as a detector for the NLSP and its decay products. We found the number of events at a 1 kton to O(10) kton detector could be significant enough to study the NLSP decays with lifetime shorter than 1010sec at the LHC. The performance of existing 1 kton detectors may be good enough to do such studies at the LHC, if they can be placed close to the ATLAS/CMS detectors. At a future e^\ensuremath-e^\ensuremath- collider, scalar electrons \stackrel\texttildelowe^\ensuremath-'s are copiously produced. Slow NLSPs may be produced from the \stackrel\texttildelowe^\ensuremath- decay. The number of stopped NLSPs at a future linear collider could be large enough to study rare decay modes of the NLSP.