New Constraint on the Local Relic Neutrino Background Overdensity with the First KATRIN Data Runs

Aker, M.; Batzler, D.; Beglarian, A.; Behrens, J.; Berlëv, A. I.; Besserer, U.; Bieringer, B.; Block, F.; Bobien, S.; Bornschein, B.; Bornschein, L.; Böttcher, M.; Brunst, T.; Caldwell, T. S.; Carney, R. M. D.; Chilingaryan, S.; Choi, W.; Debowski, K.; Descher, M.; Barrero, D. Díaz; Doe, P. J.; Dragoun, O.; Drexlin, G.; Edzards, F.; Eitel, K.; Ellinger, Enrico; Engel, R.; Enomoto, S.; Felden, A.; Formaggio, J. A.; Fränkle, F. M.; Franklin, G.; Friedel, F.; Fulst, A.; Gauda, K.; Gavin, A.S.; Gil, W.; Glück, F.; Größle, Robin; Gumbsheimer, R.; Hannen, V.; Haußmann, N.; Helbing, K.; Hickford, S.; Hiller, R.; Hillesheimer, D.; Hinz, D.; Höhn, Thomas; Houdy, T.; Huber, A.; Jansen, A.; Karl, C.; Kellerer, F.; Kellerer, J.; Kleifges, M.; Klein, Manuel; Köhler, Christoph; Köllenberger, L.; Kopmann, A.; Korzeczek, M.; Kovalı́k, A.; Krasch, B.; Krause, H.; Cascio, L. La; Lasserre, T.; Le, T. L.; Lebeda, O.; Lehnert, B.; Lokhov, Alexey; Machatschek, M.; Malcherek, E.; Mark, M.; Marsteller, A.; Martín, E. L.; Melzer, C.; Mertens, S.; Mostafa, J.; Müller, Klaus Peter; Neumann, H.; Niemes, S.; Oelpmann, P.; Parno, D. S.; Poon, A. W. P.; Poyato, J.M.L.; Priester, F.; Ráliš, J.; Ramachandran, S.; Robertson, R. G. H.; Rodejohann, Werner; Rodenbeck, C.; Röllig, M.; Röttele, C.; Ryšavý, M.; Sack, R.; Sáenz, Alejandro; Salomon, R.; Schäfer, P.; Schimpf, L.; Schlösser, M.; Schlösser, K.; Schlüter, L.; Schneidewind, S.; Schrank, M.; Schwemmer, A.; Šefčík, M.; Sibille, V.; Siegmann, D.; Slezák, M.; Spanier, F.; Steidl, M.; Sturm, M.; Telle, Helmut H.; Thorne, L. A.; Thümmler, T.; Titov, N.; Tkachev, I.; Urban, K.; Valerius, K.; Vénos, D.; Hernández, A. P. Vizcaya; Weinheimer, C.; Welte, S.; Wendel, J.; Wiesinger, Christoph; Wilkerson, J. F.; Wolf, J.; Wüstling, S.; Wydra, Johanna; Xu, W.; Zadoroghny, S.; Zeller, G. P.

doi:10.1103/physrevlett.129.011806

Cited by 21 publications

(31 citation statements)

References 29 publications

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“…Thierry Lasserre points out that large-enough overdensities can be potentially observable with the 𝛽-decay experiment KATRIN exploiting again the (relic) neutrino capture process over tritium. Albeit only sensitive to very large overdensity values, KATRIN has already improved previous bounds by two orders of magnitude [20].…”

Section: Pos(now2022)101mentioning

confidence: 91%

Summary of Session V: Particle Physics in the Cosmos

Chianese¹,

Gerbino²

2022

Proceedings of Neutrino Oscillation Workshop — PoS(NOW2022)

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The investigation of fundamental physics via observations of particles of astrophysical and cosmological origin is an active research area that is independent from and complementary to terrestrial searches. Here we summarize the "Particle physics in the cosmos" session of the NOW 2022 edition. The focus of this session has been on recent advances, from both theoretical and experimental perspectives, in our understanding of neutrino and dark matter properties.

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Section: Pos(now2022)101mentioning

confidence: 91%

Summary of Session V: Particle Physics in the Cosmos

Chianese¹,

Gerbino²

2022

Proceedings of Neutrino Oscillation Workshop — PoS(NOW2022)

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“…The NP can manifest itself in the measured spectrum in several ways, e.g. a kink-like spectral feature (heavy sterile neutrinos [48]), a shape distortion (exotic weak interactions, light sterile neutrinos or new light bosons [49]), the appearance of a line feature (relic neutrino capture [50]), or a sidereal modulation of the fit parameters (LIV [51]).…”

Section: (V) Neutrinos From Beta Decaysmentioning

confidence: 99%

Searches for beyond-standard-model physics with astroparticle physics instruments

Ackermann,

Helbing

2023

Phil. Trans. R. Soc. A.

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Many instruments for astroparticle physics are primarily geared towards multi-messenger astrophysics, to study the origin of cosmic rays and to understand high-energy astrophysical processes. Since these instruments observe the Universe at extreme energies and in kinematic ranges not accessible at accelerators these experiments provide also unique and complementary opportunities to search for particles and physics beyond the standard model of particle physics. In particular, the reach of IceCube, Fermi and KATRIN to search for and constrain Dark Matter, Axions, heavy Big Bang relics, sterile neutrinos and Lorentz invariance violation will be discussed. The contents of this article are based on material presented at the Humboldt–Kolleg ‘Clues to a mysterious Universe—exploring the interface of particle, gravity and quantum physics’ in June 2022. This article is part of the theme issue ‘The particle-gravity frontier’.

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“…Polarizing tritium targets in PTOLEMY, as explored in [32], would make it sensitive to the incoming direction of the neutrinos, 3 possibly allowing the study of CNB anisotropies in the future. Within this context, we also utilize our simulations to explore how the number densities vary across the sky and how these anisotropies compare to those resulting from evolving primordial 1 An upper limit on the neutrino number density is given by KATRIN [20], which is many orders of magnitudes above the cosmological average of ∼56cm −3 . The conceivability of such values is discussed in [21].…”

Section: Jcap11(2023)038mentioning

confidence: 99%

Influence of local structure on relic neutrino abundances and anisotropies

Zimmer,

Correa,

Ando

2023

J. Cosmol. Astropart. Phys.

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Gravitational potentials of the Milky Way and extragalactic structures can influence the propagation of the cosmic neutrino background (CNB). Of particular interest to future CNB observatories, such as PTOLEMY, is the CNB number density on Earth. In this study, we have developed a simulation framework that maps the trajectories of relic neutrinos as they move through the local gravitational environment. The potentials are based on the dark matter halos found in state-of-the-art cosmological N-body simulations, resulting in a more nuanced and realistic input than the previously employed analytical models. We find that the complex dark matter distributions, along with their dynamic evolution, influence the abundance and anisotropies of the CNB in ways unaccounted for by earlier analytical methods. Importantly, these cosmological simulations contain multiple instances of Milky Way-like halos that we employ to model a variety of gravitational landscapes. Consequently, we notice a variation in the CNB number densities that can be primarily attributed to the differences in the masses of these individual halos. For neutrino masses between 0.01 and 0.3 eV, we note clustering factors within the range of 1 + 𝒪(10-3) to 1 + 𝒪(1). Furthermore, the asymmetric nature of the underlying dark matter distributions within the halos results in not only overdense, but intriguingly, underdense regions within the full-sky anisotropy maps. Gravitational clustering appears to have a significant impact on the angular power spectra of these maps, leading to orders of magnitude more power on smaller scales beyond multipoles of ℓ = 3 when juxtaposed against predictions by primordial fluctuations. We discuss how our results reshape our understanding of relic neutrino clustering and how this might affect observability of future CNB observatories such as PTOLEMY.GitHub: our simulation code will be made visiblehere.

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New Constraint on the Local Relic Neutrino Background Overdensity with the First KATRIN Data Runs

Cited by 21 publications

References 29 publications

Summary of Session V: Particle Physics in the Cosmos

Summary of Session V: Particle Physics in the Cosmos

Searches for beyond-standard-model physics with astroparticle physics instruments

Influence of local structure on relic neutrino abundances and anisotropies

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