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Light Fermionic Dark Matter and its Possible Detection in Neutrino Experiments

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 نشر من قبل Jennifer Kile
 تاريخ النشر 2009
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We explore the potential for the direct detection of light fermionic dark matter in neutrino detectors. We consider the possible observation of the process $bar{f} p to e^+ n$, where $f$ is a dark matter fermion, in a model-independent manner. All operators of dimension six or lower which can contribute to this process are listed, and we place constraints on these operators from decays of $f$ which contain $gamma$ rays or electrons. One operator is found which is sufficiently weakly constrained that it could give observable interactions in neutrino detectors. We find that Super-Kamiokande can probe the new physics scale for this operator up to $O(100{TeV})$.



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107 - Jennifer Kile 2009
We consider, in a model-independent framework, the potential for observing dark matter in neutrino detectors through the interaction $bar{f} p to e^+ n$, where $f$ is a dark fermion. Operators of dimension six or less are considered, and constraints are placed on their coefficients using the dark matter lifetime and its decays to states which include $gamma$ rays or $e^+e^-$ pairs. After these constraints are applied, there remains one operator which can possibly contribute to $bar{f} p to e^+ n$ in neutrino detectors at an observable level. We then consider the results from the Super-Kamiokande relic supernova neutrino search and find that Super-K can probe the new physics scale of this interaction up to $O(100mbox{ TeV})$.
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