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We perform an extensive investigation of the sensitivity to non-vanishing tau-neutrino mass in a large water Cherenkov detector, developing an analysis method for neutrino events originated by a supernova explosion. This approach, based on…

Astrophysics · Physics 2014-10-13 Gianni Fiorentini , Camillo Acerbi

This work presents an upper bound on the neutrino mass using the emission of $\nu_e$ from the neutronization burst of a core collapsing supernova at 10~kpc of distance and a progenitor star of 15~M$_\odot$. The calculations were done…

High Energy Physics - Phenomenology · Physics 2015-01-05 F. Rossi-Torres , M. M. Guzzo , E. Kemp

We discuss the prospects for improved upper limits on neutrino masses that may be provided by a core-collapse supernova explosion in our galaxy, if it exhibits time variations in the neutrino emissions on the scale of a few milliseconds as…

High Energy Physics - Phenomenology · Physics 2013-05-30 John Ellis , Hans-Thomas Janka , Nikolaos E. Mavromatos , Alexander S. Sakharov , Edward K. G. Sarkisyan

A high-statistics measurement of the neutrinos from a galactic core-collapse supernova is extremely important for understanding the explosion mechanism, and studying the intrinsic properties of neutrinos themselves. In this paper, we…

High Energy Physics - Phenomenology · Physics 2015-05-28 Jia-Shu Lu , Jun Cao , Yu-Feng Li , Shun Zhou

We have studied bounds on the neutrino mass using new data from the WMAP 3 year data, the Sloan Digital Sky Survey measurement of the baryon acoustic peak, the Type Ia supernovae from SNLS, and the Lyman-alpha forest. We find that even in…

Astrophysics · Physics 2009-11-11 Ariel Goobar , Steen Hannestad , Edvard Mortsell , Huitzu Tu

Cosmology at present provides the nominally strongest constraint on the masses of standard model neutrinos. However, this constraint extremely dependent on the nature of the dark energy component of the Universe. When the dark energy…

Astrophysics · Physics 2008-11-26 Steen Hannestad

Numerous estimates of upper bounds on the (anti)neutrino rest mass have been published based on the SN1987A observations. Here, we use a nonkinematic (thermal) time extent to provide a rest mass estimate of a few eV (as mc^2 mass), if not…

General Physics · Physics 2009-10-05 John Michael Williams

We present a new strategy for measuring the electron neutrino mass ($\mnue$) by future detection of a Galactic supernova in large underground detectors such as the Super-Kamiokande (SK). This method is nearly model-independent and one can…

Astrophysics · Physics 2009-10-30 Tomonori Totani

I briefly review cosmological bounds on neutrino masses and the underlying gravitational physics at a level appropriate for readers outside the field of cosmology. For the case of three massive neutrinos with standard model freezeout, the…

High Energy Physics - Phenomenology · Physics 2009-10-07 Max Tegmark

A new method to study the effects of neutrino masses on a supernova neutrino signal is proposed. The method relies exclusively on the analysis of the full statistics of neutrino events, it is independent of astrophysical assumptions, and…

Astrophysics · Physics 2009-11-10 Enrico Nardi , Jorge I. Zuluaga

I derive an upper bound on the electron neutrino component of the diffuse supernova neutrino flux from the constraint on the antineutrino component at SuperKamiokande. The connection between antineutrino and neutrino channels is due to the…

High Energy Physics - Phenomenology · Physics 2009-11-11 Cecilia Lunardini

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

A lower bound on the light neutrino mass $m_\nu$ is derived in the framework of a geometrical interpretation of quantum mechanics. Using this model and the time of flight delay data for neutrinos coming from SN1987A, we find that the…

General Relativity and Quantum Cosmology · Physics 2009-11-11 G. Lambiase , G. Papini , R. Punzi , G. Scarpetta

The next-generation water Cherenkov Hyper-Kamiokande detector will be able to detect thousands of neutrino events from a galactic Supernova explosion via Inverse Beta Decay processes followed by neutron capture on Gadolinium. This superb…

High Energy Physics - Phenomenology · Physics 2023-10-10 Federica Pompa , Olga Mena

The sum of cosmic neutrino masses can be measured cosmologically, as the sub-eV particles behave as `hot' dark matter whose main effect is to suppress the clustering of matter compared to a universe with the same amount of purely cold dark…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-05 Helen Shao , Jahmour J. Givans , Jo Dunkley , Mathew Madhavacheril , Frank Qu , Gerrit Farren , Blake Sherwin

We present a new upper limit of sum m_{\nu} eV < 0.28 (95% CL) on the sum of the neutrino masses assuming a flat LCDM cosmology. This relaxes slightly to sum m_{\nu} < 0.34 and sum m_{\nu} < 0.47 when quasi non-linear scales are removed and…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Shaun A. Thomas , Filipe B. Abdalla , Ofer Lahav

The result of a search for neutrino bursts from supernova explosions using the Super-Kamiokande detector is reported. Super-Kamiokande is sensitive to core-collapse supernova explosions via observation of their neutrino emissions. The…

Astrophysics · Physics 2012-08-27 Kamiokande Collaboration , M. Ikeda , A. Takeda , Y. Fukuda , M. R. Vagins

We present here up-to-date neutrino mass limits exploiting the most recent cosmological data sets. By making use of the Cosmic Microwave Background temperature fluctuation and polarization measurements, Supernovae Ia luminosity distances,…

Cosmology and Nongalactic Astrophysics · Physics 2021-10-06 Eleonora Di Valentino , Stefano Gariazzo , Olga Mena

The discovery of neutrino oscillations has shown that neutrinos, in contradiction to a prediction of the minimal standard model, have mass. Oscillations do not yield a value for the mass, but do set a lower limit of 0.02 eV on the average…

Nuclear Experiment · Physics 2015-02-03 R. G. Hamish Robertson

The best upper bounds on the masses of stable and unstable light neutrinos derive from the upper bound on the total mass density, as inferred from the lower limit $t_0> 13$ Gyr on the dynamical age of the Universe: If the Universe is…

High Energy Physics - Phenomenology · Physics 2007-05-23 Sidney A. Bludman
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