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Strongly interacting massive particle

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For the brown dwarf or exoplanet, see SIMP J013656.5+093347.

Strongly interacting massive particles (SIMPs) are hypothetical particles that interact strongly between themselves [looks like they scatter off each other - observation of colliding galaxies in the Abell 3827 cluster, where it seemed that dark matter lagged behind the ordinary matter] and weakly with ordinary matter, but could form the inferred dark matter despite this.[1] However, this finding has since been discounted based on further observations and modelling of the cluster.[2][3]

SIMPs in the Real World

SIMPs are difficult to track, scientists have found a cluster of SIMPs localized around Claremont High School, in Claremont, California. Scientits have nicknamed SIMP particles that they have been able to capture.

Notable SIMPs

SIMPs in captivity are often given nicknames. Notable SIMPs include, "Siddarth Gummadi" (See "Comedian") and Tyler McNeil. SIMP particles often enter a state where their molecular structure changes to resemble spikes or horns. Dr. Kevin Van Rodroopwaffel (NYU) dubbed this state as "vitamus hornicus", but is often referred to in the scientific community as "horny". Strongly interacting massive particles have been proposed as a solution for the ultra-high-energy cosmic-ray problem[4][5] and the absence of cooling flows in galactic clusters.[6][7]

Various experiments and observations have set constraints on SIMP dark matter from 1990 onward.[8][9][10][11][12][13]

SIMPs annihilations would produce significant heat. DAMA set limits with NaI(Tl) crystals.[11][citation needed]

Measurements of Uranus's heat excess exclude SIMPS from 150 MeV to 104 GeV.[14] Earth's heat flow significantly constrains any cross section.[15]

See also

References

  1. ^ Wandelt, Benjamin D; Dave, Romeel; Farrar, Glennys R; McGuire, Patrick C; Spergel, David N; Steinhardt, Paul J (2000), "Self-Interacting Dark Matter", in Cline, David B (ed.), Sources and Detection of Dark Matter and Dark Energy in the Universe, Springer-Verlag, p. 263, arXiv:astro-ph/0006344, Bibcode:2001sddm.symp..263W, ISBN 978-3-540-41216-8
  2. ^ Massey, Richard; et al. (2017), "Dark matter dynamics in Abell 3827: new data consistent with standard Cold Dark Matter", Monthly Notices of the Royal Astronomical Society, 477: 669–677, arXiv:1708.04245, doi:10.1093/mnras/sty630{{cite journal}}: CS1 maint: unflagged free DOI (link)
  3. ^ Grossman, Lisa (April 5, 2018). "Dark matter isn't interacting with itself after all". ScienceNews. Retrieved 2018-04-05.
  4. ^ Chung, Daniel J. H; Farrar, Glennys R; Kolb, Edward W (1998), "Are ultrahigh energy cosmic rays signals of supersymmetry?", Physical Review D, 57 (8): 4606, arXiv:astro-ph/9707036, Bibcode:1998PhRvD..57.4606C, doi:10.1103/PhysRevD.57.4606
  5. ^ Albuquerque, Ivone F. M; Farrar, Glennys R; Kolb, Edward W (1998), "Exotic massive hadrons and ultra-high energy cosmic rays", Physical Review D, 59 (1): 015021, arXiv:hep-ph/9805288, Bibcode:1999PhRvD..59a5021A, doi:10.1103/PhysRevD.59.015021
  6. ^ Qin, Bo; Wu, Xiang-Ping (2001), "Constraints on the Interaction between Dark Matter and Baryons from Cooling Flow Clusters", Physical Review Letters, 87 (6): 061301, arXiv:astro-ph/0106458, Bibcode:2001PhRvL..87f1301Q, doi:10.1103/PhysRevLett.87.061301, PMID 11497819
  7. ^ Chuzhoy, Leonid; Nusser, Adi (2006), "Consequences of short range interactions between dark matter and protons in galaxy clusters", The Astrophysical Journal, 645 (2): 950–954, arXiv:astro-ph/0408184, Bibcode:2006ApJ...645..950C, doi:10.1086/504505
  8. ^ Starkman, Glenn D; Gould, Andrew; Esmailzadeh, Rahim; Dimopoulos, Savas (1990), "Opening the window on strongly interacting dark matter", Physical Review D, 41 (12): 3594, Bibcode:1990PhRvD..41.3594S, doi:10.1103/PhysRevD.41.3594
  9. ^ Cyburt, Richard H; Fields, Brian D; Pavlidou, Vasiliki; Wandelt, Benjamin D (2002), "Constraining Strong Baryon-Dark Matter Interactions with Primordial Nucleosynthesis and Cosmic Rays", Physical Review D, 65 (12): 123503, arXiv:astro-ph/0203240, Bibcode:2002PhRvD..65l3503C, doi:10.1103/PhysRevD.65.123503.
  10. ^ Zaharijas, Gabrijela; Farrar, Glennys R (2004), "A Window in the Dark Matter Exclusion Limits", Physical Review D, 72 (8): 083502, arXiv:astro-ph/0406531, Bibcode:2005PhRvD..72h3502Z, doi:10.1103/PhysRevD.72.083502
  11. ^ a b Bacci, C.; et al. (1996), "Improved limits on strongly interacting massive particles with NaI(Tl) scintillators", Astroparticle Physics, 4 (3): 195–198, Bibcode:1996APh.....4..195B, doi:10.1016/0927-6505(95)00032-1
  12. ^ McGuire, Patrick C; Steinhardt, Paul J (2001), "Cracking Open the Window for Strongly Interacting Massive Particles as the Halo Dark Matter", Proceedings of the International Cosmic Ray Conference, vol. 4, Hamburg, Germany, p. 1566, arXiv:astro-ph/0105567, Bibcode:2001ICRC....4.1566M {{cite book}}: |journal= ignored (help)CS1 maint: location missing publisher (link)
  13. ^ Javorsek II, D; Fischbach, E; Teplitz, V (2002), "New Experimental Bounds on the Contributions to the Cosmological Density Parameter Ω from Strongly Interacting Massive Particles", The Astrophysical Journal, 568 (1): 1–8, Bibcode:2002ApJ...568....1J, doi:10.1086/338796
  14. ^ Mitra, Saibal (2004), "Uranus's anomalously low excess heat constrains strongly interacting dark matter", Physical Review D, 70 (10): 103517, arXiv:astro-ph/0408341, Bibcode:2004PhRvD..70j3517M, doi:10.1103/PhysRevD.70.103517
  15. ^ Mack, Gregory D; Beacom, John F; Bertone, Gianfranco (2007), "Towards Closing the Window on Strongly Interacting Dark Matter: Far-Reaching Constraints from Earth's Heat Flow", Physical Review D, 76 (4): 043523, arXiv:0705.4298, Bibcode:2007PhRvD..76d3523M, doi:10.1103/PhysRevD.76.043523

Further reading

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