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Physics  2000 

Supernova Neutrino Detection in Borexino

DOI: 10.1016/S0927-6505(01)00129-3

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Abstract:

We calculated the expected neutrino signal in Borexino from a typical Type II supernova at a distance of 10 kpc. A burst of around 110 events would appear in Borexino within a time interval of about 10 s. Most of these events would come from the reaction channel $\bar{\nu}_e+p\to e^++n$, while about 30 events would be induced by the interaction of the supernova neutrino flux on $^{12}$C in the liquid scintillator. Borexino can clearly distinguish between the neutral-current excitations $^{12}{C}(\nu,\nu')^{12}{C}^*$(15.11 MeV) and the charged-current reactions $^{12}{C}(\nu_e,e^-)^{12}{N}$ and $^{12}{C}(\bar{\nu}_e,e^+)^{12}{B}$, via their distinctive event signatures. The ratio of the charged-current to neutral-current neutrino event rates and their time profiles with respect to each other can provide a handle on supernova and non-standard neutrino physics (mass and flavor oscillations).

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