☆ 4.4 Review

A Review of Neutrino Decoupling from the Early Universe to the Current Universe

UNIVERSE (2022)

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Article Astronomy & Astrophysics

Primordial lepton asymmetries in the precision cosmology era: Current status and future sensitivities from BBN and the CMB

Miguel Escudero et al.

Summary: The EMPRESS survey, using a new sample of extremely metal poor systems, has reported a primordial helium abundance that is 3s smaller than the prediction from standard big bang nucleosynthesis. This could indicate a primordial lepton asymmetry in the electron neutrino flavor. A comprehensive analysis of the lepton asymmetry is presented, using measurements of primordial element abundances and cosmic microwave background (CMB) data from Planck. The results suggest a non-zero lepton asymmetry with a deviation from zero of 2.9s, assuming no dark radiation, or 2.2s if the abundance of dark radiation is not assumed.

PHYSICAL REVIEW D (2023)

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Article Physics, Multidisciplinary

Direct neutrino-mass measurement with sub-electronvolt sensitivity

M. Aker et al.

Summary: This article reports on the upper limits of the effective electron anti-neutrino mass from the second physics run of the Karlsruhe Tritium Neutrino experiment. Using a high-precision measurement of the tritium beta-decay spectrum, independent of cosmological models and particle assumptions, the sensitivity and upper limit of the neutrino mass were determined.

NATURE PHYSICS (2022)

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Article Physics, Particles & Fields

Unstable cosmic neutrino capture

Kensuke Akita et al.

Summary: This study focuses on the direct observations of the Cosmic Neutrino Background (CvB) to explore the neutrino lifetime and the masses of invisible particles. It proposes a method to analyze the energy spectra of lighter neutrinos and emitted electrons for the detection of neutrino decay.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Astronomy & Astrophysics

Primordial neutrino asymmetry evolution with full mean-field effects and collisions

Julien Froustey et al.

Summary: Neutrino oscillations and mean-field effects play important roles in the evolution of neutrinos in the early Universe. By considering the neutrino self-interaction mean-field contribution and the complete expression for collisions, a more accurate description of the evolution of primordial neutrino asymmetries is achieved. An approximation method is used to simulate the synchronous oscillations in the evolution of neutrino chemical potentials, which is faster compared to the full quantum kinetic equation integration. The study also finds that the CP-violating Dirac phase does not significantly affect cosmological observables.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2022)

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Article Astronomy & Astrophysics

Cosmic neutrino background detection in large-neutrino-mass cosmologies

James Alvey et al.

Summary: This study explores the possibility of detecting the cosmic neutrino background (CNB) by capturing relic neutrinos on a tritium target. It examines the prospects of CNB detection and neutrino mass measurement in different cosmological models, including nonstandard ones. The research suggests that some nonstandard cosmological models may have higher CNB detection prospects compared to the standard model, and the detection results can be used to distinguish between different cosmological scenarios.

PHYSICAL REVIEW D (2022)

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Article Physics, Particles & Fields

2020 global reassessment of the neutrino oscillation picture

P. F. de Salas et al.

Summary: The latest global fit analysis of neutrino oscillation data provides more accurate measurements of theta(13), theta(12), Delta m212, and Delta m312 and suggests a preference for the second octant in the atmospheric angle theta(23) with statistical significance. Cosmological measurements show a clear preference for the normal neutrino mass ordering.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Precise capture rates of cosmic neutrinos and their implications on cosmology

Kensuke Akita et al.

Summary: Exploring the potential of measuring cosmological effects through cosmic neutrino capture on tritium, such as neutrino decoupling and clustering in our Galaxy, can provide insights into neutrino physics and the evolution of the universe. Precise estimates of capture rates can reveal new phenomena in neutrino physics and indicate non-standard processes in the evolution of the universe.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Astronomy & Astrophysics

Towards a precision calculation of the effective number of neutrinos Neff in the Standard Model. Part II. Neutrino decoupling in the presence of flavour oscillations and finite-temperature QED

Jack J. Bennett et al.

Summary: In this work, a new calculation method for the standard model benchmark value of the effective number of neutrinos is presented, taking into account various factors and evaluating uncertainties.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2021)

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Article Astronomy & Astrophysics

Neutrino flavor mixing breaks isotropy in the early universe

Rasmus S. L. Hansen et al.

Summary: Research indicates that small perturbations in the neutrino field in the early universe could be amplified by non-linear flavor mixing, affecting flavor evolution and the effective number of thermally excited neutrino species. The study also shows that neutrino-antineutrino asymmetry can significantly increase under isotropic and anisotropic initial conditions.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2021)

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Article Astronomy & Astrophysics

Neutrino clustering in the Milky Way and beyond

P. Mertsch et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

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Article Astronomy & Astrophysics

Precision early universe thermodynamics made simple: Neff and neutrino decoupling in the Standard Model and beyond

Miguel Escudero Abenza

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

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Article Astronomy & Astrophysics

A precision calculation of relic neutrino decoupling

Kensuke Akita et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

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Article Physics, Particles & Fields

The fate of hints: updated global analysis of three-flavor neutrino oscillations

Ivan Esteban et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Astronomy & Astrophysics

Neutrino decoupling including flavour oscillations and primordial nucleosynthesis

Julien Froustey et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

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Article Astronomy & Astrophysics

Towards a precision calculation of the effective number of neutrinos Neff in the Standard Model: the QED equation of state

Jack J. Bennett et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

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Article Astronomy & Astrophysics

Incomplete neutrino decoupling effect on big bang nucleosynthesis

Julien Froustey et al.

PHYSICAL REVIEW D (2020)

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Article Astronomy & Astrophysics

Neutrino decoupling beyond the Standard Model: CMB constraints on the Dark Matter mass with a fast and precise Neff evaluation

Miguel Escudero

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2019)

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Article Physics, Particles & Fields

Global analysis of three-flavour neutrino oscillations: synergies and tensions in the determination of 23, CP, and the mass ordering

Ivan Esteban et al.

JOURNAL OF HIGH ENERGY PHYSICS (2019)

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Review Physics, Nuclear

A design for an electromagnetic filter for precision energy measurements at the tritium endpoint

M. G. Betti et al.

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS (2019)

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Article Astronomy & Astrophysics

Thermalisation of sterile neutrinos in the early universe in the 3+1 scheme with full mixing matrix

S. Gariazzo et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2019)

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Article Astronomy & Astrophysics

Neutrino physics with the PTOLEMY project: active neutrino properties and the light sterile case

M. G. Betti et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2019)

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Article Multidisciplinary Sciences

Gravitational clustering of cosmic relic neutrinos in the Milky Way

Jue Zhang et al.

NATURE COMMUNICATIONS (2018)

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Article Astronomy & Astrophysics

On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses

Esteban Roulet et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2018)

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Article Physics, Multidisciplinary

Improved constraints on lepton asymmetry from the cosmic microwave background

Isabel M. Oldengott et al.

EPL (2017)

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Article Astronomy & Astrophysics

Calculation of the local density of relic neutrinos

P. F. de Salas et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2017)

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Article Physics, Particles & Fields

Insights into neutrino decoupling gleaned from considerations of the role of electron mass

E. Grohs et al.

NUCLEAR PHYSICS B (2017)

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Article Astronomy & Astrophysics

Relic neutrino decoupling with flavour oscillations revisited

Pablo F. de Salas et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2016)

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Article Astronomy & Astrophysics

Neutrino quantum kinetic equations: The collision term

Daniel N. Blaschke et al.

PHYSICAL REVIEW D (2016)

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Article Physics, Nuclear

Tritium β decay in chiral effective field theory

A. Baroni et al.

PHYSICAL REVIEW C (2016)

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Article Astronomy & Astrophysics

Neutrino energy transport in weak decoupling and big bang nucleosynthesis

E. Grohs et al.

PHYSICAL REVIEW D (2016)

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Article Physics, Particles & Fields

Relic neutrino freeze-out: Dependence on natural constants

Jeremiah Birrell et al.

NUCLEAR PHYSICS B (2015)

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Article Astronomy & Astrophysics

Detecting non-relativistic cosmic neutrinos by capture on tritium: phenomenology and physics potential

Andrew J. Long et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2014)

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Article Astronomy & Astrophysics

Annual modulation of cosmic relic neutrinos

Benjamin R. Safdi et al.

PHYSICAL REVIEW D (2014)

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Article Astronomy & Astrophysics

Cosmological lepton asymmetry with a nonzero mixing angle θ13

Emanuele Castorina et al.

PHYSICAL REVIEW D (2012)

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Article Astronomy & Astrophysics

Updated BBN bounds on the cosmological lepton asymmetry for non-zero θ13

Gianpiero Mangano et al.

PHYSICS LETTERS B (2012)

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Article Astronomy & Astrophysics

THE TEMPERATURE OF THE COSMIC MICROWAVE BACKGROUND

D. J. Fixsen

ASTROPHYSICAL JOURNAL (2009)

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Article Astronomy & Astrophysics

Prospects for cosmic neutrino detection in tritium experiments in the case of hierarchical neutrino masses

Mattias Blennow

PHYSICAL REVIEW D (2008)

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Article Physics, Nuclear

Charged current cross section for massive cosmological neutrinos impinging on radioactive nuclei

R. Lazauskas et al.

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS (2008)

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Article Physics, Nuclear

Exact relativistic β decay endpoint spectrum

S. S. Masood et al.

PHYSICAL REVIEW C (2007)

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Article Astronomy & Astrophysics

Probing low energy neutrino backgrounds with neutrino capture on beta decaying nuclei

Alfredo G. Cocco et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2007)

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Article Physics, Particles & Fields

Relic neutrino decoupling including flavour oscillations

G Mangano et al.

NUCLEAR PHYSICS B (2005)

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Review Astronomy & Astrophysics

Gravitational clustering of relic neutrinos and implications for their detection

A Ringwald et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2004)

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Article Physics, Particles & Fields

Neutrino energy loss rate in a stellar plasma

S Esposito et al.

NUCLEAR PHYSICS B (2003)

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Article Astronomy & Astrophysics

Neutrino clustering in cold dark matter halos: Implications for ultrahigh energy cosmic rays

S Singh et al.

PHYSICAL REVIEW D (2003)

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Article Astronomy & Astrophysics

Analytical treatment of neutrino asymmetry equilibration from flavor oscillations in the early universe

YYY Wong

PHYSICAL REVIEW D (2002)

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Article Astronomy & Astrophysics

Stringent constraints on cosmological neutrino-antineutrino asymmetries from synchronized flavor transformation

KN Abazajian et al.

PHYSICAL REVIEW D (2002)

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Article Physics, Particles & Fields

Cosmological bounds on neutrino degeneracy improved by flavor oscillations

AD Dolgov et al.

NUCLEAR PHYSICS B (2002)

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Article Astronomy & Astrophysics

A precision calculation of the effective number of cosmological neutrinos

G Mangano et al.

PHYSICS LETTERS B (2002)

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Article Astronomy & Astrophysics

Oscillation effects on neutrino decoupling in the early universe

S Hannestad

PHYSICAL REVIEW D (2002)

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Article Astronomy & Astrophysics

Expected signals in relic neutrino detectors

G Duda et al.

PHYSICAL REVIEW D (2001)

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Article Physics, Particles & Fields

Non equilibrium spectra of degenerate relic neutrinos

S Esposito et al.

NUCLEAR PHYSICS B (2000)

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