| http://www.w3.org/ns/prov#value | - Or annihilation may not produce that many electrons and positrons compared to other particles that we would already have observed. (In fact, the latter two issues typically are the case for many popular models of dark matter, such as those from simple variants of supersymmetry.) Meanwhile, false positives are possible too: there might be astronomical processes in nature that we are unaware of that
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