Friday, June 1, 2018

particle physics - Neutrino mass hierarchy


I am a beginner in particle physics. I just want to know why there is a sign ambiguity in the neutrino mass square difference $\Delta m_{31}^2$ and not in $\Delta m_{21}^2$?




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...