Particle physics conservation laws

[Marthius]

I am working on a homework assignment for my particle physics class, and it requires I understand what forces conserve what quantum numbers. As I understand it:
Strong
Conserves Isospin, I3 projection, s, c, b, t, Baryon number, lepton flavor
E&M
Conserves I3 projection, s, c, b, t, Baryon number, lepton flavor
Can Violate Isospin
Weak
Conserves Baryon number, lepton flavor
Can Violate Isospin, I3 projection, s, c, b, t,

Please let me know if this is correct, or if I have made a mistake.
Thanks in advance

 

[mark726]

!

Hello,

Thank you for your question. You are correct that the strong and electromagnetic forces conserve isospin, I3 projection, s, c, b, t, baryon number, and lepton flavor. However, it is important to note that electromagnetic force can violate isospin if there are particles involved with different electric charges.

On the other hand, the weak force conserves baryon number and lepton flavor, but it can violate isospin, I3 projection, s, c, b, and t. This is because the weak force is responsible for processes such as beta decay, which can change the flavor of a particle.

I hope this clarifies any confusion you may have had. Please let me know if you have any other questions. Good luck with your assignment!