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Navigating the pitfalls of relic neutrino detection

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arxiv 2101.10069 v3 pith:6U72KINX submitted 2021-01-25 hep-ph cond-mat.mes-hall

Navigating the pitfalls of relic neutrino detection

Yevheniia Cheipesh , Vadim Cheianov , Alexey Boyarsky This is my paper
classification hep-ph cond-mat.mes-hall
keywords detectionneutrinoachievingatomsbackgroundbearbeenbest
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Beta-spectrum of radioactive atoms was long ago predicted to bear an imprint of the Cosmic Neutrino Background (C$\nu$B). Over the years, it has been recognised that the best chance of achieving the signal-to-noise ratio required for the observation of this effect lies with solid-state designs. Here we bring to the fore a fundamental quantum limitation on the type of beta-decayer that can be used in such a design. We derive a simple usability criterion and show that $^3\rm H$, which is the most popular choice, fails to meet it. We provide a list of potentially suitable isotopes and discuss why their use in C$\nu$B detection requires further research.

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Cited by 3 Pith papers

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    Detecting the cosmic neutrino background's dipole anisotropy via tritium capture requires ~10^5 times the exposure needed for flux detection, with Majorana neutrinos suffering an additional (m_ν/T_ν)^2 suppression.

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    hep-ph 2025-04 unverdicted novelty 6.0

    Computes the modified tritium beta-decay spectrum in graphene by combining DFT interaction potentials with nuclear quantum mechanics calculations across different loadings and geometries.

  3. Type II Seesaw Leptogenesis in a Majoron background

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    Spontaneous wash-in leptogenesis in Type II Seesaw with Majoron pNGB background enables baryon asymmetry generation alongside dark matter cogenesis for specific v_T, v_sigma and m_j ranges.