The Project 8 Neutrino Mass Experiment

Collaboration, Project 8; Esfahani, A. Ashtari; Böser, S.; Buzinsky, N.; Carmona-Benitez, M. C.; Claessens, C.; Viveiros, L. de; Doe, P. J.; Enomoto, S.; Fertl, M.; Formaggio, J. A.; Gaison, J. K.; Grando, M.; Heeger, K. M.; Huyan, X.; Jones, A. M.; Kazkaz, K.; Li, M.; Lindman, A.; Matthé, C.; Mohiuddin, R.; Monreal, B.; Mueller, R.; Nikkel, J. A.; Novitski, E.; Oblath, N. S.; Peña, J. I.; Pettus, W.; Reimann, R.; Robertson, R. G. H.; Rybka, G.; Saldaña, L.; Schram, M.; Slocum, P. L.; Stachurska, J.; Sun, Y. -H.; Surukuchi, P. T.; Tedeschi, J. R.; Telles, A. B.; Thomas, F.; Thomas, M.; Thorne, L. A.; Thümmler, T.; Pontseele, W. Van De; VanDevender, B. A.; Weiss, T. E.; Wendler, T.; Ziegler, A.

doi:10.48550/arxiv.2203.07349

Cited by 10 publications

(11 citation statements)

References 33 publications

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“…By 2024, the KATRIN collaboration expects to be sensitive to effective neutrino masses m ν ≤ 0.2 eV [51], which will become the strongest constraint on the mass of unstable Dirac neutrinos. Future experiments such as Project 8 [52], HOLMES [53] and ECHo [54] aim to improve this bound further, with the potential to probe effective neutrino mass scales as low as m ν ≤ 40 meV. The Simons Observatory will improve upon the cosmological neutrino mass constraints with a goal sensitivity of i m ν i ≤ 90 meV [55], capable of ruling out the inverted mass hierarchy.…”

Section: Other Constraintsmentioning

confidence: 99%

Limits on the cosmic neutrino background

Bauer

Shergold

2023

J. Cosmol. Astropart. Phys.

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We present the first comprehensive discussion of constraints on the cosmic neutrino background (CνB) overdensity, including theoretical, experimental and cosmological limits for a wide range of neutrino masses and temperatures. Additionally, we calculate the sensitivities of future direct and indirect relic neutrino detection experiments and compare the results with the existing constraints, extending several previous analyses by taking into account that the CνB reference frame may not be aligned with that of the Earth. The Pauli exclusion principle strongly disfavours overdensities ην ≫ 1 at small neutrino masses, but allows for overdensities ην ≲ 125 at the KATRIN mass bound mν ≃ 0.8 eV. On the other hand, cosmology strongly favours 0.2 ≲ ην ≲ 3.5 in all scenarios. We find that direct detection proposals are capable of observing the CνB without a significant overdensity for neutrino masses mν ≳ 50 meV, but require an overdensity ην ≳ 3 × 105 outside of this range. We also demonstrate that relic neutrino detection proposals are sensitive to the helicity composition of the CνB, whilst some may be able to distinguish between Dirac and Majorana neutrinos.

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Section: Other Constraintsmentioning

confidence: 99%

Limits on the cosmic neutrino background

Bauer

Shergold

2023

J. Cosmol. Astropart. Phys.

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“…There is a need to understand the nature of Dark Matter (DM), with one strongly motivated possibility being the existence of a family of low-mass particles (µeV to meV) that interact only weakly with electromagnetic fields [3,4]. Determining the absolute mass of the neutrino remains one of the most pressing problems in laboratory physics, and an international effort is underway to understand how it can be achieved by measuring, to one part in 10 6 , the energies of individual electrons released during the radioactive decay of Tritium [5,6]. There is a need for laboratory experiments that can probe the nature of spacetime and its relationship with the fundamental postulates of quantum field theory.…”

Section: Quantum Sensingmentioning

confidence: 99%

Quantum Electronics for Fundamental Physics

Withington¹

2023

Preprint

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The emerging field of quantum sensors and electronics for fundamental physics is introduced, emphasising the role of thin-film superconducting devices. Although the next generation of ground-based and space-based experiments requires the development of advanced technology across the whole of the electromagnetic spectrum, this article focuses on ultra-low-noise techniques for radio to far-infrared wavelengths, where existing devices fall short of theoretical limits. Passive circuits, detectors and amplifiers are described from classical and quantum perspectives, and the sensitivities of detector-based and amplifier-based instruments discussed. Advances will be achieved through refinements in existing technology, but innovation is essential. The needed developments go beyond engineering and relate to theoretical studies that bring together concepts from quantum information theory, quantum field theory, classical circuit theory, and device physics. This article has been written to introduce graduate-level scientists to quantum sensor physics, rather than as a formal review.In memory of my sister Diana Syder, clinical speech and language specialist, artist and poet, who dedicated her life to helping others communicate.

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“…Any positive measurement should be followed up using a different experimental technique and/or a different decaying isotope. There is a strong consensus to pursue realization both of cyclotron-radiation emission spectroscopy for a next-generation tritium experiment such as Project 8 [77], and of microcalorimetry with embedded 163 Ho as developed by ECHo and HOLMES [78], to ensure this flexibility. Continued effort to identify additional isotopes for kinematic m β measurements could open up new experimental possibilities.…”

Section: Neutrino-mass Scalementioning

confidence: 99%