# What happens to the $SU(2)_L$ group after spontaneous symmetry breaking?

The electro-weak symmetry $SU(2)_L\times U(1)_Y$ spontaneously breaks into $U(1)_{EM}$ - and underlies the Higgs mechanism.

What happens to the $SU(2)_L$ symmetry after symmetry breaking? Why are left handed (right handed) leptons and neutrinos still doublets (singlets) of $SU(2)_L$?

• If you make that an answer I’ll accept it. – SuperCiocia Jan 18 '18 at 20:54