نتایج جستجو برای: neutrino detection
تعداد نتایج: 586258 فیلتر نتایج به سال:
We investigate the flux and the event rate of the supernova relic neutrino background (SRN) at the SuperKamiokande detector for various neutrino oscillation models with parameters inferred from recent experimental results. A realistic model of neutrino emission from supernova explosions and several models of the cosmic star formation history are adopted in the calculation. The number flux over ...
We present a Monte Carlo study of an underwater neutrino telescope based on the detection of acoustic signals generated by neutrino induced cascades. This provides a promising approach to instrument large detector volumes needed to detect the small flux of cosmic neutrinos at ultra-high energies (E 1 EeV). Acoustic signals are calculated based on the thermo-acoustic model. The signal is propaga...
A measurement of the final state distribution of the (8)B β decay, obtained by implanting a (8)B beam in a double-sided silicon strip detector, is reported here. The present spectrum is consistent with a recent independent precise measurement performed by our collaboration at the IGISOL facility, Jyväskylä [O. S. Kirsebom et al., Phys. Rev. C 83, 065802 (2011)]. It shows discrepancies with prev...
We examine how constraints can be placed on the neutrino component of dark matter by an accurate measurement of neutrinoless double beta (0νββ) decay and the solar oscillation amplitude. We comment on the alleged evidence for 0νββ decay. The detection of neutrinoless double beta decay would imply the violation of lepton number conservation. The process could be induced by Majorana neutrino mass...
In this contribution we will discuss recent results concerning the intensity and the angular distribution of the gamma-ray and neutrino emissions as should be originated from the hadronic scattering of cosmic rays (CR) with the interstellar medium (ISM). We assumed that CR sources are supernova remnants (SNR) and estimated the spatial distribution of primary nuclei by solving numerically the di...
We calculate the sensitivity of future cosmic microwave background probes and large scale structure measurements from galaxy redshift surveys to the neutrino mass. We find that, for minimal models with few parameters, a measurement of the matter power spectrum over a large range of redshifts has more constraining power than a single measurement at low redshifts. However, this improvement in sen...
Amongst the atmospheric muons recorded by neutrino telescopes are muons produced by the interaction of cosmic gamma rays with the Earth’s atmosphere. Although they are not numerous, it has been suggested that such muons could be distinguished by neutrino telescopes from the isotropic background by correlating their direction with known sources of gamma rays. The ANTARES neutrino telescope is ta...
Search for ν τ appearance via neutrino oscillations in the ν µ CNGS beam with the OPERA experiment The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) is designed to realize the first detection of neutrino oscillations in the appearance mode through the study of νµ → ντ oscillations. The apparatus consists of an emulsion/lead target associated to electronic detectors and...
The field of astroparticle physics is currently developing rapidly, since new experiments challenge our understanding of the investigated processes. Three messengers can be used to extract information on the properties of astrophysical sources: photons, charged Cosmic Rays and neutrinos. This review focuses on high-energy neutrinos (Eν > 100 GeV) with the main topics as follows. • The productio...
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