New Experimental Bounds on the Contributions to the Cosmological Density Parameter Ω from Strongly Interacting Massive Particles

Autor:	Ephraim Fischbach, D. Javorsek, Vigdor L. Teplitz
Rok vydání:	2002
Předmět:	Physics Particle physics Space and Planetary Science Astrophysics::High Energy Astrophysical Phenomena Dark matter Astronomy and Astrophysics Cosmic ray Elementary particle Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Lightest Supersymmetric Particle Iron meteorite
Zdroj:	The Astrophysical Journal. 568:1-8
ISSN:	1538-4357 0004-637X
Popis:	Strongly interacting neutral massive particles (SIMPs) have been proposed as candidates for dark matter, as the lightest supersymmetric particle, as a possible explanation for ultra-high-energy cosmic rays, and as a dark matter solution to galactic structure problems. If bound to nuclei, SIMPs could manifest themselves as anomalously heavy isotopes of known elements. We analyze the results from a recent experimental search for SIMPs in a collection of gold and iron samples with various exposures to cosmic rays and to a SIMP component of dark matter. The samples included gold flown on the NASA Long-Duration Exposure Facility, as well as geological samples and an iron meteorite. We show that the bounds on SIMPs from that experiment can be used to set nontrivial constraints on the SIMP contribution to the cosmological density parameter Ω.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e8420a69b8a9f54ff87936be43b24d09 https://doi.org/10.1086/338796 Zobrazit plný text záznamu