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Abstract

What insight does theory give us about neutrino masses? When parity was discovered in 1957 it was immediately suggested that the neutrino was a massless Weyl particle having only two components, the left-handed v L and the right-handed anti-particle \(\bar v_R .\) With the advent of the standard model all fermions start out as Weyl particles: these are the left-handed doublets
$$\begin{array}{*{20}c} {\left( {\begin{array}{*{20}c} {v_e } \\ e \\ \end{array} } \right)_L } & {\left( {\begin{array}{*{20}c} {v_\mu } \\ \mu \\ \end{array} } \right)_L } & {\left( {\begin{array}{*{20}c} {v_\tau } \\ \tau \\ \end{array} } \right)_L } \\ {\left( {\begin{array}{*{20}c} u \\ d \\ \end{array} } \right)_L } & {\left( {\begin{array}{*{20}c} c \\ s \\ \end{array} } \right)_L } & {\left( {\begin{array}{*{20}c} t \\ b \\ \end{array} } \right)_L } \\ \end{array} $$
(1)
and the right-handed singlets
$$\begin{array}{*{20}c} {\begin{array}{*{20}c} {e_R } & {\mu _R } & {\tau _R } \\ \end{array} } \\ {\begin{array}{*{20}c} {u_R } & {d_R } & {c_R } & {s_R } & {t_R } & {b_R .} \\ \end{array} } \\ \end{array} $$
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Keywords

Dark Matter Neutrino Masse Solar Neutrino Grand Unify Theory Standard Solar Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Lincoln Wolfenstein
    • 1
  1. 1.Department of PhysicsCarnegie Mellon UniversityPittsburghUSA

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