ar X iv : h ep - e x / 01 04 03 7 v 2 2 0 A pr 2 00 1 Observation of an Anomalous Number of Dimuon Events in a High Energy Neutrino Beam

ar X iv : h ep - e x / 01 04 03 7 v 1 1 9 A pr 2 00 1 Observation of an Anomalous Number of Dimuon Events in a High Energy Neutrino Beam

T. Adams, A. Alton, S. Avvakumov, L. de Barbaro, P. de Barbaro, R. H. Bernstein, A. Bodek, T. Bolton, J. Brau, D. Buchholz, H. Budd, L. Bugel, J. Conrad, R. B. Drucker, B. T. Fleming, R. Frey, J.A. Formaggio, J. Goldman, M. Goncharov, D. A. Harris, R. A. Johnson, J. H. Kim, S. Koutsoliotas, M. J. Lamm, W. Marsh, D. Mason, J. McDonald, C. McNulty, K. S. McFarland, D. Naples, P. Nienaber, A. Romo...

ar X iv : h ep - p h / 04 04 06 0 v 1 6 A pr 2 00 4 Neutrino oscillations in low density medium

For the case of small matter effects: V ≪ ∆m 2 /2E, where V is the matter potential, we develop the perturbation theory using ǫ ≡ 2V E/∆m 2 as the expansion parameter. We derive simple and physically transparent formulas for the oscillation probabilities in the lowest order in ǫ which are valid for an arbitrary density profile. They can be applied for the solar and supernova neutrinos propagati...

ar X iv : h ep - p h / 02 03 04 2 v 2 4 A pr 2 00 2 Once more on mixing of the a 0 ( 980 ) and f 0 ( 980 ) mesons

ar X iv : h ep - p h / 01 04 12 9 v 1 1 2 A pr 2 00 1 Neutrino Oscillations via the Bulk

We investigate the possibility that the large mixing of neutrinos is induced by their large coupling to a five-dimensional bulk neutrino. In the strong coupling limit the model is exactly soluble. It gives rise to an oscillation amplitude whose squared-mass difference is independent of the channel, thus making it impossible to explain both the solar and the atmospheric neutrino oscillations sim...

ar X iv : h ep - p h / 02 03 27 2 v 2 3 0 M ar 2 00 2 Flux of Atmospheric Neutrinos 1 Flux of Atmospheric Neutrinos ∗

Atmospheric neutrinos produced by cosmic-ray interactions in the atmosphere are of interest for several reasons. As a beam for studies of neutrino oscillations they cover a range of parameter space hitherto unexplored by accelerator neutrino beams. The atmospheric neutrinos also constitute an important background and calibration beam for neutrino astronomy and for the search for proton decay an...