نتایج جستجو برای: neutrino oscillation

تعداد نتایج: 57668  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی 1388

چکیده ندارد.

2014
Tian Ma Shouhong Wang SHOUHONG WANG

The current neutrino oscillation theory asserts that neutrinos are massive subatomic particles, and can undergo their flavor oscillation. First in this article, we examine carefully the current oscillation theory, and argue that a massless neutrino oscillation mechanism based on the Weyl equations for neutrinos is also a feasible theory. This massless neutrino oscillation mechanism resolves bot...

1998
M. Alimohammadi A. Shariati

Using the Einstein-Cartan-Dirac theory, we study the effect of torsion on neutrino oscillation. We see that torsion cannot induce neutrino oscillation, but affects it whenever oscillation exists for other reasons. We show that the torsion effect on neutrino oscillation is as important as the neutrino mass effect, whenever the ratio of neutrino number density to neutrino energy is ∼ 10 cm−3 /eV,...

1999
Nicolao Fornengo

The eeect induced by neutrino oscillation on the dark matter indirect detection signal which consists in a muon neutrino ux produced by neutralino annihilation in the Earth core is analyzed. We consider the neutrino oscillation parameters relevant to the atmosferic neutrino deecit, both in the ! and ! s cases. The eeect induced by neutrino oscillation on the dark matter indirect detection signa...

2001
M. Fukugita

The measurement of the charged-current B solar neutrino reaction on deuterium at the Sudbury Neutrino Observatory confirms the neutrino oscillation hypothesis for the solar neutrino problem, and the result favours the solution with large neutrino mixing angles. We demonstrate that the current neutrino oscillation data (including atmospheric and reactor neutrinos) are sufficient to construct the...

1995
Yuval Grossman

In analyzing neutrino oscillation experiments it is often assumed that while new physics contributes to neutrino masses, neutrino interactions are given by the Standard Model. We develop a formalism to study new physics effects in neutrino interactions using oscillation experiments. We argue that the notion of branching ratio is not appropriate in this case. We show that a neutrino appearance e...

2004
Sandhya Choubey

We review the current status of the solar neutrino oscillation parameters. We discuss the conditions under which measurements from future solar neutrino experiments would determine the oscillation parameters precisely. Finally we expound the potential of long baseline reactor anti-neutrino experiments in measuring the solar neutrino oscillation parameters.

2008
Tobias M. Raufer

After a brief introduction to neutrino oscillations and a review of the world knowledge of neutrino oscillation parameters, we introduce two current neutrino oscillation experiments, MINOS and MiniBooNE. MINOS makes precise measurements of the oscillation parameters |∆m 32 |and sin(2θ23). MiniBooNE tests neutrino oscillations in the parameter region reported by the LSND experiment, which would ...

2016
Ashutosh Kumar Alok Subhashish Banerjee

Neutrino oscillations provide evidence for the mode entanglement of neutrino mass eigenstates in a given flavour eigenstate. Given this mode entanglement, it is pertinent to consider the relation between the oscillation probabilities and other quantum correlations. In this work, we show that all the well-known quantum correlations, such as the Bell’s inequality, are directly related to the neut...

1997
Morimitsu TANIMOTO

The three modified neutrino mass matrices in the SU(5) × U(2) model are studied focusing on the neutrino oscillation experiments. The model could be reconcile with the data of LSND. In the case of 〈φ1〉 6 = 0, the heaviest neutrino could be the hot dark matter; m3 ≥ 1eV, which means that CHORUS/NOMAD will find neutrino oscillations. In the special case of a = 1, which is a coefficient of 22 entr...

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