SuperWIMP Cosmology and Collider Physics
摘要
Dark matter may be composed of superWIMPs, superweakly-interacting massive particles produced in the late decays of other particles. We focus here on the well-motivated supersymmetric example of gravitino LSPs. Gravitino superWIMPs share several virtues with the well-known case of neutralino dark matter: they are present in the same supersymmetric frameworks (supergravity with R-parity conservation) and naturally have the desired relic density. In contrast to neutralinos, however, gravitino superWIMPs are impossible to detect by conventional dark matter searches, may explain an existing discrepancy in Big Bang nucleosynthesis, predict observable distortions in the cosmic microwave background, and imply spectacular signals at future particle colliders.
引用
@article{arxiv.hep-ph/0410178,
title = {SuperWIMP Cosmology and Collider Physics},
author = {Jonathan L. Feng and Arvind Rajaraman and Bryan T. Smith and Shufang Su and Fumihiro Takayama},
journal= {arXiv preprint arXiv:hep-ph/0410178},
year = {2007}
}
备注
12 pages, to appear in the proceedings of SUSY2004, the 12th International Conference on Supersymmetry and Unification of Fundamental Interactions, Tsukuba, Japan, 17-23 June 2004