  Determination of the neutrino mass hierarchy, octant of the mixing angle
theta_{23} and the CP violating phase delta_{CP} are the unsolved problems in
neutrino oscillation physics today. In this paper our aim is to obtain the
minimum exposure required for the proposed Long Baseline Neutrino Oscillation
(LBNO) experiment to determine the above unknowns. We emphasize on the
advantage of exploiting the synergies offered by the existing and upcoming
long-baseline and atmospheric neutrino experiments in economising the LBNO
configuration. In particular, we do a combined analysis for LBNO, T2K, NOvA and
INO. We consider three prospective LBNO setups -- CERN-Pyhasalmi (2290 km),
CERN-Slanic (1500 km) and CERN-Frejus (130 km) and evaluate the adequate
exposure required in each case. Our analysis shows that the exposure required
from LBNO can be reduced considerably due to the synergies arising from the
inclusion of the other experiments.

High Energy Physics - Phenomenology