Strongly interacting massive particle

In astrophysics SIMP is an abbreviation of Strongly Interacting Massive Particle. SIMPs could form the inferred dark matter despite their strong interactions with ordinary matter.^[1]

SIMPs have been proposed as a solution for the ultra high energy cosmic ray problem^[2][3] and for the absence of cooling flows.^[4][5] Various experiments and observations have set constraints on SIMP dark matter.^{[1][6][7][8][9][10][11][12]}

See also

• Weakly Interacting Massive Particles

References

1. B. D. Wandelt, R. Dave, G. R. Farrar, P. C. McGuire, D. N. Spergel and P. J. Steinhardt, Self-Interacting Dark Matter, Marina del Rey 2000, Sources and detection of dark matter and dark energy in the universe, 263 (2000), preprint.
2. D. Chung, G. R. Farrar and E. W. Kolb, Are ultrahigh energy cosmic rays signals of supersymmetry?, Phys. Rev. D 57, 4606 (1998) preprint.
3. I. F. M. Albuquerque, G. R. Farrar and E. W. Kolb, Exotic massive hadrons and ultra-high energy cosmic rays, Phys. Rev. D 59, 015021 (1999) preprint.
4. B. Qin and X. P. Wu, Constraints on the Interaction between Dark Matter and Baryons from Cooling Flow Clusters, Phys. Rev. Lett. 87, 061301 (2001) preprint.
5. L. Chuzhoi and A. Nusser, A limit on the dark matter and baryons interaction cross-section in galaxy clusters, preprint.
6. G. D. Starkman, A. Gould, R. Esmailzadeh, and S. Dimopoulos, Opening the window on strongly interacting dark matter, Phys. Rev. D 41, 3594 (1990).
7. P. C. McGuire and P. J. Steinhardt, Cracking Open the Window for Strongly Interacting Massive Particles as the Halo Dark Matter, Proceedings of the International Cosmic Ray Conference, Hamburg, Germany, 1566 (2001), preprint.
8. R. H. Cyburt, B. D. Fields, V. Pavlidou and B. D. Wandelt, Constraining Strong Baryon-Dark Matter Interactions with Primordial Nucleosynthesis and Cosmic Rays, Phys. Rev. D 65, 123503 (2002) preprint.
9. S. Mitra, Uranus's anomalously low excess heat constrains strongly interacting dark matter, Phys. Rev. D 70, 103517 (2004) preprint.
10. G. D. Mack, J. F. Beacom and G. Bertone, Towards Closing the Window on Strongly Interacting Dark Matter: Far-Reaching Constraints from Earth's Heat Flow, Phys. Rev. D 76, 043523 (2007) preprint.
11. G. Zaharijas and G. R. Farrar, Window in the dark matter exclusion limits, Phys. Rev. D 72, 083502 (2005) preprint.
12. D. Javorsek II, E. Fischbach and V. Teplitz, New experimental bounds on the contributions to the cosmological density parameter ${\displaystyle \Omega }$  from strongly interacting massive particles, ApJ 568, 1 (2002).

Alternate definition for SIMP. Root words are pimp and sissy.

(1)-The common simp can be found with a girlfriend, so in a sense is a pimp but is a sissy for being with a cunniving female who does not want to be with him in the first place.

Ex. Eric is a simp for being in love with a female that cheated on him but ignores the fact in hopes of maintaining his happy relationship.

(2)- A simp can also be found tagging behing large groups of females in hopes of achieving sexual intercourse. He will allow the females to play him to their advantage, all the while not caring.

Ex. After countless nights of no success Travis continues to chase the females endlessly while not even caring he will never reach touchdown status.

Synonyms include but are not limited too: mark, trick, wimp, sucker, and sissy