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Seesaw mechanism

{title2=$m_\nu\simeq m_D^2/M_R$}

In the type-I regime $M_L\simeq0$, $M_R\gg m_D$, the light <mass> is $m_D^2/M_R$. Specifying only the right-handed scale does not fix a numerical light <mass>. A choice of Dirac <mass> is an extra assumption, not a result of <matrix> diagonalization.

Seesaw light-mass estimate needs a Dirac scale

Past exam of the particle Astrophysics course of the University of Cambridge / 2016 / Paper 1 / 1 / Solution

Seesaw light-mass estimate needs a Dirac scale ( $m_{ν} ≃ m_{D}^{2} / M_{R}$ )

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Seesaw light-mass estimate needs a Dirac scale (mν​≃mD2​/MR​)

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Seesaw light-mass estimate needs a Dirac scale ( $m_{ν} ≃ m_{D}^{2} / M_{R}$ )

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