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2. Majorana fermion - Wikipedia

   en.wikipedia.org/wiki/Majorana_fermion

   In particle physics a Majorana fermion (/ m aɪ ə ˈ r ɑː n ə / [1]) or Majorana particle is a fermion that is its own antiparticle. They were hypothesised by Ettore Majorana in 1937. The term is sometimes used in opposition to Dirac fermion , which describes fermions that are not their own antiparticles.

3. Majorana equation - Wikipedia

   en.wikipedia.org/wiki/Majorana_equation

   That is, the Majorana spinor is "its own antiparticle". Insofar as charge conjugation takes an electrically charge particle to its anti-particle with opposite charge, one must conclude that the Majorana spinor is electrically neutral. The Majorana equation is Lorentz covariant, and

4. Fermionic field - Wikipedia

   en.wikipedia.org/wiki/Fermionic_field

   Spin-1/2 Majorana fermions, such as the hypothetical neutralino, can be described as either a dependent 4-component Majorana spinor or a single 2-component Weyl spinor. It is not known whether the neutrino is a Majorana fermion or a Dirac fermion; observing neutrinoless double-beta decay experimentally would settle this question.

5. Ettore Majorana - Wikipedia

   en.wikipedia.org/wiki/Ettore_Majorana

   Ettore Majorana (/ m aɪ ə ˈ r ɑː n ə /, [2] Italian: [ˈɛttore majoˈraːna]; born 5 August 1906 and disappeared 1938) was an Italian theoretical physicist who worked on neutrino masses.

6. Sterile neutrino - Wikipedia

   en.wikipedia.org/wiki/Sterile_neutrino

   The other case is that it is a Dirac fermion, which is not its own antiparticle. To put this in mathematical terms, we have to make use of the transformation properties of particles. For free fields, a Majorana field is defined as an eigenstate of charge conjugation. However, neutrinos interact only via the weak interactions, which are not ...

7. Yukawa interaction - Wikipedia

   en.wikipedia.org/wiki/Yukawa_interaction

   In the Standard Model, this non-zero expectation is responsible for the fermion masses despite the chiral symmetry of the model apparently excluding them. To exhibit the mass term, the action can be re-expressed in terms of the derived field ϕ ′ = ϕ − ϕ 0 , {\displaystyle \phi '=\phi -\phi _{0}~,} where ϕ 0 {\displaystyle ~\phi _{0 ...

8. Married nearly 7 decades, these lovebirds still say "I do ...

   www.aol.com/married-nearly-7-decades-lovebirds...

   On this Valentine's Day, here is a story of 94-year-old Don Barnett and his 93-year-old wife Marilyn, who have kept their love alive for 68 years with a musical elixir. Married nearly 7 decades ...

9. C-symmetry - Wikipedia

   en.wikipedia.org/wiki/C-symmetry

   Charge conjugation occurs as a symmetry in three different but closely related settings: a symmetry of the (classical, non-quantized) solutions of several notable differential equations, including the Klein–Gordon equation and the Dirac equation, a symmetry of the corresponding quantum fields, and in a general setting, a symmetry in (pseudo-)Riemannian geometry.