Arnab Dasgupta, Zini Rahman, Rathin Adhikari
Considering $\nu_e \rightarrow \nu_\mu$ and $\bar{\nu}_e \rightarrow \bar{\nu}_\mu$ oscillations as the signals in neutrino factory we study the discovery reach of CP violation in presence of standard and non-standard interactions of neutrinos with matter. For standrad interactions it is found that around 3000 Km baseline the discovery reach of CP violation is better for neutrino factory. Even this is better than the 130 Km baseline in superbeam facility but with the conservative choices of neutrino flux and detector specifications as given by GLoBES. However, the precision measurement of CP violating phase $\delta $ in neutrino factory is found to be good in the baselines ranging from 3000 Km to 4000 Km. In presence of non-standard interactions the discovery reach of CP violation for 3000 Km baseline is better than 130 Km superbeam facility in presence of noon-standard interactions $\ve_{e\mu}$ and also for most of the allowed region of $\ve_{e\tau}$. However, 130 Km baseline is found to be better for $\ve_{\mu\mu}$ and $\ve_{\mu\tau}$. For other NSIs - $\ve_{ee}, \ve_{\tau\tau}$ the 3000 Km baseline in neutrino factory is better for smaller values of NSIs whereas 130 Km baseline with superbeam facility is better for larger values of NSIs. Compared to other baselines for neutrino factory the NSI discovery reach is in general better for 3000 Km baseline except for $\ve_{\mu\tau}$ where as for example, 2300 Km baseline for superbeam is found to be better.
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http://arxiv.org/abs/1210.4801
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