Solar Neutrino Observables Sensitive to Matter Effects

Table 1

Average electron density at the neutrino production region and energy of the relevant pp solar neutrinos fluxes. Last column shows the ratio of the electron neutrino elastic scattering with electrons cross-section to the 𝜇 (or 𝜏) neutrino one. For this calculation, we have assumed a measured electron kinetic energy range of [0.05,0.4], [1,1.4], [0,0.8], and [5,16] MeV for the pp, pep, ⁷Be, and ⁸B, respectively.

Source	𝜌𝑆𝑌𝑒(gcm^−3)	Energy (MeV)	𝜎𝜇/𝜎𝑒
pp	67.9	≤0.42	0.284
pep	73.8	1.44	0.203
^7Be	86.5	0.86	0.221
^8B	92.5	≤16	0.155