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The physics goals of NOvA are the constraints of neutrino oscillation parameters such as the octant of $\theta_{23}$, $\delta_{\rm{CP}}$, and the neutrino mass hierarchy via a joint fit to $\nu_{\mu}$ and $\nu_{e}$ oscillation spectrum. We…

高能物理 - 实验 · 物理学 2018-09-03 Reddy Pratap Gandrajula , Micah Groh

An approximation that is often used in fits to reactor and atmospheric neutrino data and in some studies of future neutrino oscillation experiments is to assume one dominant scale, $\Delta m^2$, of neutrino mass squared differences, in…

高能物理 - 唯象学 · 物理学 2010-05-28 Irina Mocioiu , Robert Shrock

The latest cosmological constraints on the sum of neutrino masses, in combination with the latest laboratory measurements on oscillations, provide ``decisive" Bayesian evidence for the normal neutrino mass hierarchy. We show that this…

高能物理 - 唯象学 · 物理学 2022-09-14 Raul Jimenez , Carlos Pena-Garay , Kathleen Short , Fergus Simpson , Licia Verde

From the analyses of the recent data of neutrino oscillation experiments (especially the CHOOZ and the Super KAMIOKANDE experiments), we discuss how these data affect the neutrinoless double beta decay ($(\beta \beta)_{0\nu}$) rate and vice…

高能物理 - 唯象学 · 物理学 2009-10-31 T. Fukuyama , K. Matsuda , H. Nishiura

We revisit cosmological neutrino mass bounds when a fraction of dark matter is allowed to decay to massless dark radiation. By compensating the late-time increase in the matter density induced by neutrinos becoming non-relativistic,…

宇宙学与河外天体物理 · 物理学 2026-03-04 Thomas Montandon , Vivian Poulin , Thomas Rink , Thomas Schwetz

Neutrino oscillation data indicate that $\theta_{23}$ is close to $\pi/4$ and $\theta_{13}$ is very small. A simple $\mu\leftrightarrow\tau$ exchange symmetry of the neutrino mass matrix predicts $\theta_{23}=-\pi/4$ and $\theta_{13}=0$.…

高能物理 - 唯象学 · 物理学 2018-03-13 Rambabu Korrapati , S. Uma Sankar

We inspect recently updated neutrino oscillation data -- specifically coming from the Tokai to Kamioka and NuMI Off-axis $\nu_e$ Appearance experiments -- and how they are analyzed to determine whether the neutrino mass ordering is normal…

We discuss to what extent future precision measurements of neutrino mixing observables will influence the information we can draw from a measurement of (or an improved limit on) neutrinoless double beta decay. Whereas the Delta m^2…

高能物理 - 唯象学 · 物理学 2009-11-11 S. Choubey , W. Rodejohann

The observation of neutrinoless double beta decay would allow to establish lepton number violation and the Majorana nature of neutrinos. The rate of this process in the case of 3-neutrino mixing is controlled by the neutrinoless double beta…

高能物理 - 唯象学 · 物理学 2018-10-24 J. T. Penedo , S. T. Petcov

The hypothesis that the Majorana mass of ordinary neutrinos dominates the rate of neutrinoless double beta decay is investigated. Predictions from neutrino oscillations are updated. Nuclear uncertainties are discussed, evaluating the impact…

高能物理 - 唯象学 · 物理学 2014-08-11 Stefano Dell'Oro , Simone Marcocci , Francesco Vissani

Current neutrino experiments measure the neutrino mixing parameters with an unprecedented accuracy. The upcoming generation of experiments will be sensitive to subdominant effects that can give information on the unknown neutrino…

高能物理 - 唯象学 · 物理学 2018-01-30 Y. Farzan , M. Tortola

Recent results from DESI combined with cosmic microwave background data give the tightest constraints on the sum of neutrino masses to date. However, these analyses approximate the neutrino mass hierarchy by three degenerate-mass (DM)…

宇宙学与河外天体物理 · 物理学 2025-04-11 Laura Herold , Marc Kamionkowski

Determination of the neutrino mass ordering (NMO) is one of the biggest priorities in the intensity frontier of high energy particle physics. To accomplish that goal a lot of efforts are being put together with the atmospheric, solar,…

高能物理 - 唯象学 · 物理学 2021-01-05 Francesco Capozzi , Sabya Sachi Chatterjee , Antonio Palazzo

Low-redshift probes, such as Baryon Acoustic Oscillations (BAO) and Supernovae Ia luminosity distances, have been shown to be crucial for improving the bounds on the total neutrino mass from cosmological observations, due to their ability…

宇宙学与河外天体物理 · 物理学 2024-12-16 Deng Wang , Olga Mena , Eleonora Di Valentino , Stefano Gariazzo

We investigate constraints on neutrino mass ordering and degeneracy by considering the first cosmological result based on Planck measurements of the cosmic microwave background. It is shown that the result at 95% CL rejects a neutrino mass…

高能物理 - 唯象学 · 物理学 2015-06-15 Naoyuki Haba , Ryo Takahashi

First results from the JUNO reactor neutrino experiment already determine with world-leading precision the small neutrino squared-mass splitting $\Delta m^2_{21}$ and the mixing angle $\theta_{12}$. In this article we perform an exploratory…

We review the status of the neutrino oscillation physics (as of June 2003), with a particular emphasis on the present knowledge of the neutrino mass-mixing parameters in a three generation approach. We consider first the nu_mu-->nu_tau…

高能物理 - 唯象学 · 物理学 2009-11-10 G. L. Fogli , E. Lisi , A. Marrone , D. Montanino , A. Palazzo , A. M. Rotunno

Motivated by recent intensive experimental efforts on searching for neutrinoless double-beta decays, we perform a detailed analysis of the physics potential of the experiments based on $^{76}\mathrm{Ge}$. Assuming no signals, current and…

高能物理 - 唯象学 · 物理学 2016-01-20 Jue Zhang , Shun Zhou

It is shown that, in the framework of the scheme with three-neutrino mixing and a mass hierarchy, the results of neutrino oscillation experiments imply an upper bound of about 10^{-2} eV for the effective Majorana mass in neutrinoless…

高能物理 - 唯象学 · 物理学 2007-05-23 S. M. Bilenky , C. Giunti

I discuss the theoretical background and the status of neutrino oscillation parameters from the current worlds' global data sample and latest flux calculations. I give their allowed ranges, best fit values and discuss the small parameters…

高能物理 - 唯象学 · 物理学 2009-09-17 J. W. F. Valle