Massive particle

The term massive particle refers to particles which have real non-zero rest mass (such as baryonic matter). According to special relativity, their velocity is always lower than the speed of light.[1] The synonyms bradyon (from Greek: βραδύς, bradys, “slow”), tardyon or ittyon[2] are sometimes used to contrast with luxon (which moves at light speed) and hypothetical tachyon (which moves faster than light).

Dark Matter

Types of massive particles include weakly interacting and stable massive particles, which are hypothesized to constitute dark matter.[3]

See also

References
  1. Folman, R.; Recami, E. (1995). "On the Phenomenology of Tachyon Radiation". Foundations of Physics Letters. 8 (2): 127–134. arXiv:hep-th/9508166. Bibcode:1995FoPhL...8..127F. doi:10.1007/BF02187583. S2CID 2758139.
  2. Bilaniuk, O.-M.P.; Sudarshan, E.C.G. (1969). "Particles beyond the Light Barrier". Physics Today. 22 (5): 43–51. Bibcode:1969PhT....22e..43B. doi:10.1063/1.3035574.
  3. de Swart, J. G.; Bertone, G.; van Dongen, J. (2017). "How dark matter came to matter". Nature Astronomy. 1 (59): 0059. arXiv:1703.00013. Bibcode:2017NatAs...1E..59D. doi:10.1038/s41550-017-0059. S2CID 119092226.


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