Bimaximal mixing refers to a proposed form of the lepton mixing matrix.
[1][2] It is characterized by the
ν
neutrino being a bimaximal mixture of
ν
and being completely decoupled from the
ν
, i.e. a uniform mixture of
ν
ν
ν
is consequently a uniform mixture of
ν
ν
Other notable properties are the symmetries between the
mass eigenstates and an absence of CP violation.
The moduli squared of the matrix elements have to be: According to PDG convention[3]: 7 , bimaximal mixing corresponds to
, which produces following matrix:[4]: 24 Alternatively,
can be used, which corresponds to:[2]: 5 The L/E flatness of the electron-like event ratio at Super-Kamiokande severely restricts the CP-conserving neutrino mixing matrices to the form:[5]: 7 Bimaximal mixing corresponds to
Tribimaximal mixing and golden-ratio mixing also correspond to an angle in the above parametrization.
[6] Bimaximal mixing, along with these other mixing schemes, have been falsified by a non-zero