Galactic positrons from Z super 0 decay
The positron excess below 10 GeV in the Galactic cosmic rays is shown to closely resemble the expected spectrum from sub-relativistic Z super 0 decay. The possibility is critically examined that the Galactic dark matter is composed of neutralinos that are just above the half the Z super 0 mass, and...
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| Veröffentlicht in: | Astroparticle physics 2004-05, Vol.21 (2), p.195-199 |
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| container_title | Astroparticle physics |
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| creator | Eichler, D Maor, I |
| description | The positron excess below 10 GeV in the Galactic cosmic rays is shown to closely resemble the expected spectrum from sub-relativistic Z super 0 decay. The possibility is critically examined that the Galactic dark matter is composed of neutralinos that are just above the half the Z super 0 mass, and that the excess positrons derive from 'decay' of virtual Z super 0 bosons produced when the neutralinos annihilate. While this mechanism provides a very good fit for energies below 10 GeV, at higher energy it seems to disagree with the data given conventional assumptions about propagation. |
| doi_str_mv | 10.1016/j.astropartphys.2003.12.007 |
| format | Article |
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The possibility is critically examined that the Galactic dark matter is composed of neutralinos that are just above the half the Z super 0 mass, and that the excess positrons derive from 'decay' of virtual Z super 0 bosons produced when the neutralinos annihilate. 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The possibility is critically examined that the Galactic dark matter is composed of neutralinos that are just above the half the Z super 0 mass, and that the excess positrons derive from 'decay' of virtual Z super 0 bosons produced when the neutralinos annihilate. 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The possibility is critically examined that the Galactic dark matter is composed of neutralinos that are just above the half the Z super 0 mass, and that the excess positrons derive from 'decay' of virtual Z super 0 bosons produced when the neutralinos annihilate. While this mechanism provides a very good fit for energies below 10 GeV, at higher energy it seems to disagree with the data given conventional assumptions about propagation.</abstract><doi>10.1016/j.astropartphys.2003.12.007</doi></addata></record> |
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| ispartof | Astroparticle physics, 2004-05, Vol.21 (2), p.195-199 |
| issn | 0927-6505 |
| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| title | Galactic positrons from Z super 0 decay |
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