View Single Post
pion decay modes
Old
  (#1 (permalink))
AntonioLao
Raider of the lost time
AntonioLao is a name known to allAntonioLao is a name known to allAntonioLao is a name known to all
 
AntonioLao's Avatar
 
Status: Offline
Posts: 5,613
Thanks Given: 790
Thanked 180x in 174 Posts
Join Date: Nov 2003
Rep Power: 80
   
pion decay modes - 03-28-2007, 02:59 PM

The three species of pions are p+, p-, and p°. Each of these is involved in at the least one mode of particle creation and annihilation. Neglecting their probabilities the following symmetrical reactions are all theoretically possible: (1) p- + p « n, (2) p+ + n « p, and (3) p° + e+ « p. The question to be asked is why the proton (p) appears in all reactions? The neutron (n) appears twice, while all species of pions and the positron only appear once?


Time independence: [∂E(g)]²=[∂F(a)×∂r(a)]·[∂F(b)×∂r(b)] and Mass independence: a(tr(t)=c²
  
Reply With Quote