Recent content by bubble

You are right. But my question can be reformulated. In some theories (see saw II or III), we assume the existence of a scalar SU(2)L triplet defined by Δ=(Δ++,Δ+,Δ°) (=Higgs triplet) or new fermionic SU(2) triplet Σ=(Σ+,Σ°,Σ-). In such models, we refer on the mass of the triplet mΔ or mΣ. My...

Thank you, this text is very useful. But I am still not sure to understand the difference between the fields component and the particle. For example for the Dirac field where ##\Psi_{D}=\Psi_{L}+\Psi_{R}##, the four components of the field ##\Psi_{D}## are...

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Dirac description If I well understood a Dirac description for fermions is : ##\Psi_{D}=\Psi_{L}+\Psi_{R}## where ##\Psi_{L}## is the left-chiral spinor and ##\Psi_{R}## the right-chiral spinor. Each spinor, ##\Psi_{L} ## and ##\Psi_{R}## has 2 components cotrresponding to the particle and...

Thanks ! But in fact I am not sure it is right... Look double beta decay : right (chirality) antineutrino is first emitted, then its helicity is flipped (massive neutrino) : it becomes a left helicity antineutrino still with right chirality. And, if Majorana, this left helicity antineutrino...

A left handed neutrino (chirality) can be seen with a right helicity due to a lorentz boost. Can this neutrino interact ? Yes because it is still left-handed chirality ?