We show that under gravity the effective masses for neutrino and antineutrino are different which opens a possible window of neutrino-antineutrino oscillation even if the rest masses of the corresponding eigenstates are same. This is due to CPT violation and possible to demonstrate if the neutrino mass eigenstates are expressed as a combination of neutrino and antineutrino eigenstates, as of th...

The Tokai to Kamioka (T2K) experiment is a next generation long baseline neutrino oscillation experiment utilising the Japan Proton Accelerator Research Complex (J-PARC) high intensity proton synchrotron. After a brief introduction of the current understanding of neutrino mixing, the T2K experiment, its current status and the expected physics results are presented. Then, possibilities for futur...

In this talk, I discuss the general theory of neutrino oscillation experiments, putting special emphasis on the momentum distribution of the incoming neutrino beam. Then I discuss recent neutrino oscillation experiments, viz., LSND, KARMEN and CHOOZ. Experiments foreseeable in the near future have also been discussed at the end.

The weak gravitational field expansion method to account for the gravitationally induced neutrino oscillation effect is critically examined, then it is shown that the splitting of the neutrino phase into a “kinematic” and a “gravitational” phase is not always possible because the relativistic factor modifies the particle interference phase splitting condition in a gravitational field. key words...

In this work we briefly review the wave packet approach of two generation neutrino oscillation, aiming its description in a progenitor star supernova environment. We begin calculating the wave packet size in many situations: solar and supernova plasma medium, considering nuclear interactions, as well as accelerators and reactors. This quantity is important to calculate the coherence length, whi...

This article reviews the many new results from neutrino oscillation searches which were presented at ICHEP '98. Exciting indications of neutrino oscillations have been seen in the solar neutrino deficit, atmospheric neutrino deficit and LSND excess. These indications and reported limits on oscillations are considered. Attempts to develop a theory which addresses all of the neutrino oscillation ...

Recent experimental data of neutrinos make big impact on the neutrino masses and their mixings. Most exciting one is the results at Super-Kamiokande on the atmospheric neutrinos, which indicate the large neutrino flavor oscillation of νμ → νx . Solar neutrino data also provide the evidence of the neutrino oscillation, however this problem still uncertain . What can we learn from these results? ...

Sensitivities to neutrino oscillation parameters for possible very long baseline neutrino oscillation experiments are discussed. The reach for observing a non-zero mixing angle θ13, establishing CP violation and determining the mass hierarchy are compared between various experimental options. Different possibilities for neutrino beams are briefly described, as well as the assumptions about the ...

Sensitivities to neutrino oscillation parameters for possible very long baseline neutrino oscillation experiments are discussed. The reach for observing a non-zero mixing angle θ13, establishing CP violation and determining the mass hierarchy are compared between various experimental options. Different possibilities for neutrino beams are briefly described, as well as the assumptions about the ...

Many experiments and observations have shown evidences for neutrino oscillation one after another. The solar neutrino deficit has long been observed(1; 2; 3; 4; 5). The atmospheric neutrino anomaly has been found(6; 7; 8; 9) and recently almost confirmed by SuperKamiokande(10). There is also another suggestion given by LSND(11). All of them can be understood by neutrino oscillation and hence in...