2005/04/30 by Guey-Lin Lin, Lin, Guey-Lin, Yoshiaki Umeda +1
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0505009
10 pages including 5 figures
arxiv created 2005/04/30 · openalex publication_date 2005/04/30 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
We study the matter effects to neutrino oscillations νμ→ νe and νμ→ νμat very long baselines. It has been observed that, for a very long baseline L~10000 km, the resonance peak for the νμ→ νe oscillation and the local minimum of the νμsurvival probability occurs at similar energies. With a good knowledge on the absolute value of Δm312, measurements of the above oscillation probabilities, Pμe and Pμμ, can be performed with the neutrino energy tuned to the resonance peak of the νμ→ νe oscillations. We show that the variations of CP violating phase and the solar neutrino mixing parameters have negligible effects on Pμe and Pμμ for such a long baseline. Hence Pμe and Pμμ together determine the mixing angles θ13 and θ23. Around the resonance peak for νμ→ νe oscillations, the dependencies of Pμe and Pμμ on the above mixing angles are worked out in detail, and the implications of such dependencies are discussed.