Charge conjugation and time reversal in the SM


by Einj
Tags: charge, conjugation, reversal, time
Einj
Einj is offline
#1
Feb1-14, 12:18 PM
P: 235
Hi everyone. I have a doubt on charge conjugation symmetry. Consider the Standard Model lagrangian with just the gauge and the fermionic part (no Higgs and no Yukawa). This is invariant under [itex]SU(3)_C\times SU(2)_L\times SU(2)_R\times U(1)_Y[/itex]. Moreover, as any other field theory, it is [itex]CPT[/itex] invariant.

Since, however [itex]P[/itex] is clearly violated by the asymmetry in the left-right fields we know that [itex]CT[/itex] must be violated too.

What can we say about [itex]C[/itex] and [itex]T[/itex] independently?
Phys.Org News Partner Physics news on Phys.org
The hemihelix: Scientists discover a new shape using rubber bands (w/ video)
Mapping the road to quantum gravity
Chameleon crystals could enable active camouflage (w/ video)

Register to reply

Related Discussions
Charge conjugation in Dirac equation High Energy, Nuclear, Particle Physics 2
Charge conjugation in second quantization Quantum Physics 2
What changes under charge conjugation High Energy, Nuclear, Particle Physics 4
Charge Conjugation Operation High Energy, Nuclear, Particle Physics 6
help! About charge conjugation of Dirac spinor Quantum Physics 1