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Borexino new @arxiv submission alert 
: “Sensitivity to neutrinos from the solar 
CNO cycle in Borexino”
https://arxiv.org/abs/2005.12829 #Borexino #neutrinos Thread 1/n
: “Sensitivity to neutrinos from the solar CNO cycle in Borexino”https://arxiv.org/abs/2005.12829 #Borexino #neutrinos Thread 1/n
CNO stands for carbon, nitrogen, oxygen cycle of proton-proton fusion to helium. It is expected to contribute about 1% of the total energy of the Sun. So why are CNO neutrinos the next holy grail 
of solar neutrino physics? 2/n
of solar neutrino physics? 2/n
First of all, CNO process is expected to be dominant in the stars heavier than the Sun (>1.3 solar mass). And the Sun remains our standard candle 
for understanding many processes in the stars 
far far away. 3/n
(>1.3 solar mass). And the Sun remains our standard candle for understanding many processes in the stars far far away. 3/n
Second, solar neutrinos are the only direct probe of the processes happening in the core 
of the Sun .
And while pp-chain neutrinos helped us a lot to understand the energy production, CNO neutrinos are the most sensitive to the so-called metallicity of the core. 4/n
of the Sun . And while pp-chain neutrinos helped us a lot to understand the energy production, CNO neutrinos are the most sensitive to the so-called metallicity of the core. 4/n
The Sun metallicity (the abundance of elements heavier than helium) is aan unresolved puzzle 
: currently, there are Standard Solar Models with different hypotheses about the Sun’s surface metallicity. #physicistslovepuzzles 5/n
: currently, there are Standard Solar Models with different hypotheses about the Sun’s surface metallicity. #physicistslovepuzzles 5/n
In this paper, we explore the sensitivity of the Borexino experiment to 1) the observation of CNO neutrinos 2) discrimination of between and high and low metallicity Standard Solar Models. 6/n
The methods and various approaches, as well as physics behind, are described in great detail, which can partly serve as the guide not only for #Borexino but other future experiments hunting for CNO neutrinos. 7/7 #staytuned