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Article overview
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Astrophysical bounds on supersymmetric dark-matter Q-balls | Alexander Kusenko
; Lee C. Loveridge
; Mikhail Shaposhnikov
; | Date: |
9 Jul 2005 | Journal: | JCAP 0508 (2005) 011 | Subject: | astro-ph hep-ph | Abstract: | Stable baryonic Q-balls, which appear in supersymmetric extensions of the Standard Model, could form at the end of cosmological inflation from fragmentation of the Affleck -- Dine condensate. We reconsider astrophysical constraints on such Q-balls as dark matter candidates. Baryonic Q-balls interact with matter by absorbing the baryon number and, effectively, leading to a rapid baryon number non-conservation. We have recently shown that this process can occur at a much faster rate than that used in previous calculations. As a consequence, stability of neutron stars imposes a stringent constraint on the types of Q-balls that can be dark matter. Only the Q-balls that correspond to baryonic flat directions lifted by baryon-number violating operators are allowed as dark-matter candidates. | Source: | arXiv, astro-ph/0507225 | Services: | Forum | Review | PDF | Favorites |
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