Neutrino versus antineutrino cross sections and CP violation

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We discuss the nuclear interactions of neutrinos versus those of antineutrinos, a relevant comparison for CP violation experiments in the neutrino sector. We consider the MiniBooNE quasielastic-like double-differential neutrino and antineutrino cross sections that are dependent on the energy profiles of the neutrino fluxes and hence specific to the MiniBooNE setup. We combine them introducing their sum (ν+ν¯) and their difference (ν-ν¯). We show that the last combination gives general information on the multinucleon content of the axial-vector interference term. Our theoretical model reproduces well the two cross-section combinations, confirming the need for a sizable multinucleon component.




Ericson, M., & Martini, M. (2015). Neutrino versus antineutrino cross sections and CP violation. Physical Review C - Nuclear Physics, 91(3).

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