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Neutrinoless Universe

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arxiv astro-ph/0404585 v2 pith:KT5U2VCB submitted 2004-04-29 astro-ph hep-ph

Neutrinoless Universe

classification astro-ph hep-ph
keywords neutrinoneutrinosrelicabundanceallowedannihilatearisingboson
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider the consequences for the relic neutrino abundance if extra neutrino interactions are allowed, e.g., the coupling of neutrinos to a light (compared to $m_\nu$) boson. For a wide range of couplings not excluded by other considerations, the relic neutrinos would annihilate to bosons at late times, and thus make a negligible contribution to the matter density today. This mechanism evades the neutrino mass limits arising from large scale structure.

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Cited by 5 Pith papers

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