Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-08-21
Phys.Rev. D67 (2003) 013004
Physics
High Energy Physics
High Energy Physics - Phenomenology
25 RevTEX pages, 16 PS figures, revised figure captions and references added
Scientific paper
10.1103/PhysRevD.67.013004
We propose to measure the CP phase $\delta_{\rm CP}$, the magnitude of the neutrino mixing matrix element $|U_{e3}|$ and the sign of the atmopheric scale mass--squared difference $\Delta{\rm m}^2_{31}$ with a superbeam by the joint analysis of two different long baseline neutrino oscillation experiments. One is a long baseline experiment (LBL) at 300 km and the other is a very long baseline (VLBL) experiment at 2100 km. We take the neutrino source to be the approved high intensity proton synchrotron, HIPA. The neutrino beam for the LBL is the 2-degree off-axis superbeam and for the VLBL, a narrow band superbeam. Taking into account all possible errors, we evaluate the event rates required and the sensitivities that can be attained for the determination of $\delta_{\rm CP}$ and the sign of $\Delta m^2_{31}$. We arrive at a representative scenario for a reasonably precise probe of this part of the neutrino physics.
Whisnant Kerry
Yang Jin Min
Young Bing--Lin
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