# Symmetries in Particle Physicsconservation laws

1. Feb 14, 2005

### JamesJames

Assign specific lepton generation numbers and distincguish between antineutrinos and neutrinos for the following reactions. Make appropriate fixes to show that you know about all the conservation laws not just lepton number conservation

$$\mu -> e^{-}\nu \nu$$

$$\nu n -> e^{-}p$$

$$\tau^{-} -> \pi \pi^{0} \nu$$

I have attached what I think is the solution. Can someone tell please tell me if I am correct?

In the attachment, I3 refers to the Z component of isospin and s is the strangeness

James

#### Attached Files:

• ###### sol.doc
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Last edited: Feb 14, 2005
2. Feb 15, 2005

### JamesJames

Someone?? Anyone?

3. Feb 15, 2005

### JamesJames

I am really desparate here guys

4. Feb 15, 2005

### JamesJames

Anything you say could help me..
James