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Neutrino masses are yet unknown. We discuss the present state of effective electron anti-neutrino mass from $\beta$ decay experiments; effective Majorana neutrino mass from neutrinoless double-beta decay experiments; neutrino mass squared…

High Energy Physics - Experiment · Physics 2023-10-31 Jyotsna Singh , M. Ibrahim Mirza

We introduce a new method to detect the absolute neutrino mass scale. It uses a macroscopic mass of tritium source. We explain that the neutrino mass can be measured by scaling the mass difference of the source between initial and final…

High Energy Physics - Phenomenology · Physics 2014-11-20 Akihiro Matsuzaki , Hidekazu Tanaka

The Project 8 experiment aims to measure the neutrino mass using tritium beta decays. Beta-decay electron energies will be measured with a novel technique: as the electrons travel in a uniform magnetic field their cyclotron radiation will…

Instrumentation and Detectors · Physics 2019-08-14 N. S. Oblath

The KATRIN experiment aims to determine the neutrino mass scale with a sensitivity of 200 meV/c^2 (90% C.L.) by a precision measurement of the shape of the tritium $\beta$-spectrum in the endpoint region. The energy analysis of the decay…

With a mass at least six orders of magnitudes smaller than the mass of an electron -- but non-zero -- neutrinos are a clear misfit in the Standard Model of Particle Physics. On the one hand, its tiny mass makes the neutrino one of the most…

Nuclear Experiment · Physics 2016-06-22 Susanne Mertens

The shape of the beta decay energy distribution is sensitive to the mass of the electron neutrino. Attempts to measure the endpoint shape of tritium decay have so far seen no distortion from the zero-mass form, thus placing an upper limit…

Nuclear Experiment · Physics 2009-09-24 Benjamin Monreal , Joseph A. Formaggio

In this contribution we review the status and perspectives of direct neutrino mass experiments. These experiments investigate the kinematics of $\beta$-decays of specific isotopes ($^3$H, $^{187}$Re, $^{163}$Ho) to derive model-independent…

Instrumentation and Detectors · Physics 2013-07-02 G. Drexlin , V. Hannen , S. Mertens , C. Weinheimer

The paper reviews recent experiments on tritium beta spectroscopy searching for the absolute value of the electron neutrino mass $m(\nu_e)$. By use of dedicated electrostatic filters with high acceptance and resolution, the uncertainty on…

High Energy Physics - Experiment · Physics 2011-05-24 E. W. Otten , C. Weinheimer

Although neutrinos are probably the most abundant particles of the universe their mass is not yet known. Oscillation experiments have proven that at least one of the neutrino mass states has m_{i}>0.05 eV while various interpretations of…

High Energy Physics - Experiment · Physics 2016-10-13 Otokar Dragoun , Drahoslav Vénos

There are three different methods used to search the neutrino mass: - The electron antineutrino mass can probably best be determined by the Triton decay. - The neutrinoless Double Beta Decay yields information, if the neutrino is a Dirac or…

Nuclear Theory · Physics 2017-03-21 Amand Faessler

With the compelling evidence for massive neutrinos from recent neutrino-oscillation experiments, one of the most fundamental tasks of particle physics over the next years will be the determination of the absolute mass scale of neutrinos.…

High Energy Physics - Experiment · Physics 2012-08-27 KATRIN collaboration

Building on earlier studies, we investigate the possibility to determine the type of neutrino mass spectrum (i.e., "the neutrino mass hierarchy") in a high statistics reactor electron antineutrino experiment with a relatively large…

High Energy Physics - Phenomenology · Physics 2011-03-28 Pomita Ghoshal , S. T. Petcov

We briefly review the motivation to search for sterile neutrinos in the keV mass scale, as dark matter candidates, and the prospects to find them in beta decay or electron capture spectra, with a global perspective. We describe the…

High Energy Physics - Phenomenology · Physics 2016-10-31 O. Moreno , E. Moya de Guerra , M. Ramón Medrano

Coherent elastic neutrino-nucleus scattering (CE$\nu$NS) and other rare-event physics searches, like dark matter detection, have been especially furthered by increasing sensitivity to low-energy particle interactions. Experiments using…

Instrumentation and Detectors · Physics 2023-10-09 Charles Mark Lewis

Since its original postulation by Wolfgang Pauli in 1930, the neutrino has played a prominent role in our understanding of nuclear and particle physics. In the intervening 80 years, scientists have detected and measured neutrinos from a…

High Energy Physics - Experiment · Physics 2015-06-16 J. A. Formaggio , G. P. Zeller

We propose a beta decay experiment based on a sample of ultracold atomic tritium. These initial conditions enable detection of the helium ion in coincidence with the beta. We construct a two-dimensional fit incorporating both the shape of…

Nuclear Experiment · Physics 2010-05-11 M. Jerkins , J. R. Klein , J. H. Majors , F. Robicheaux , M. G. Raizen

The objective of the Karlsruhe Tritium Neutrino (KATRIN) experiment is to determine the effective electron neutrino mass $m(\nu_\text{e})$ with an unprecedented sensitivity of $0.2\,\text{eV}$ (90\% C.L.) by precision electron spectroscopy…

Data Analysis, Statistics and Probability · Physics 2019-03-27 M. Kleesiek , J. Behrens , G. Drexlin , K. Eitel , M. Erhard , J. A. Formaggio , F. Glück , S. Groh , M. Hötzel , S. Mertens , A. W. P. Poon , C. Weinheimer , K. Valerius

We propose a method to measure the neutrino mass kinematically using beams of ions which undergo beta decay. The idea is to tune the ion beam momentum so that in most decays, the electron is forward moving with respect to the beam, and only…

High Energy Physics - Phenomenology · Physics 2009-12-04 Mats Lindroos , Bob McElrath , Christopher Orme , Thomas Schwetz

The sum of the masses of the three neutrino mass eigenstates is now constrained both from above and below, and lies between 55 and 6900 meV. The lower limit is set by neutrino oscillations and the fact that masses are non-negative. The…

Nuclear Experiment · Physics 2009-07-24 R. G. Hamish Robertson

Coherent elastic neutrino-nucleus scattering (CE$\nu$NS) poses an irreducible background in the search for dark matter-nucleus elastic scatterings, which is commonly known as the neutrino floor. As direct dark matter search experiments keep…