Neutrinos with energy greater than GeV are copiously produced in the p(A,p) interactions occurring in several astrophysical sites such as (i) the Earth atmosphere, (ii) our galactic plane as well as in (iii) the galaxy clusters. A comparison of the tau and mu neutrino flux in the presence of neutrino oscillations from these three representative astrophysical sites is presented. It is pointed out that the non-atmospheric tau neutrino flux starts dominating over the downward going atmospheric tau neutrino flux for neutrino energy E as low as ∼10GeV. This energy value is much lower than the energy value, E≥5×10 4GeV, estimated for the dominance of the non-atmospheric mu neutrino flux, in the presence of neutrino oscillations. Future prospects for possible observations of non-atmospheric tau neutrino flux are briefly mentioned.
|Number of pages||7|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 2004 Sep 23|
Bibliographical noteFunding Information:
The work of H.A. is supported by Physics Division of NCTS. The work of C.S.K. was supported in part by CHEP-SRC Program, in part by Grant No. R02-2003-000-10050-0 from BRP of the KOSEF. H.A. would like to express thanks to IPAP, Yonsei University, where the part of the work has been completed.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics