TY  - JOUR
AU  - Chakraborty, K.
AU  - Goswami, S.
AU  - Gupta, C.
AU  - Thakore, T.
PY  - 2019
DA  - 2019//
TI  - Enhancing the hierarchy and octant sensitivity of ESS nu SB in conjunction with T2K, NO nu A and ICAL@INO
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 137
EP  - 26pp
VL  - 05
IS  - 5
PB  - Springer
KW  - Neutrino Physics
KW  - Beyond Standard Model
KW  - CP violation
AB  - The main aim of the ESSSB proposal is the discovery of the leptonic CP phase (CP) with a high significance (5 sigma for 50% values of (CP)) by utilizing the physics at the second oscillation maxima of the P-e channel. It can achieve 3 sigma sensitivity to hierarchy for all values of (CP). In this work, we concentrate on the hierarchy and octant sensitivity of the ESSSB experiment. We show that combining the ESSSB experiment with the atmospheric neutrino data from the proposed India-based Neutrino Observatory (INO) experiment can result in an increased sensitivity to mass hierarchy. In addition, we also combine the results from the ongoing experiments T2K and NOa assuming their full run-time and present the combined sensitivity of ESSSB + ICAL@INO + T2K + NOA. We show that while by itself ESSSB can have up to 3 sigma hierarchy sensitivity, the combination of all the experiments can give up to 5 sigma sensitivity depending on the true hierarchy-octant combination. The octant sensitivity of ESSSB is low by itself. However the combined sensitivity of all the above experiments can give up to 3 sigma sensitivity depending on the choice of true hierarchy and octant. We discuss the various degeneracies and the synergies that lead to the enhanced sensitivity when combining different experimental data.
SN  - 1029-8479
UR  - https://arxiv.org/abs/1902.02963
UR  - https://doi.org/10.1007/JHEP05(2019)137
DO  - 10.1007/JHEP05(2019)137
LA  - English
N1  - WOS:000468950200011
ID  - Chakraborty_etal2019
ER  -