关于e+e-annihilation的问题,牛人来.In e-e+ collisons,two narrow resonances are oberved.one of mass 3.1GeV/c^2(the J) with width 0.093MeV,and a second of mass 3.7GeV/c^2 and width 0.337MeV.Calculate the lifetimes of these particles..At higher e
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![关于e+e-annihilation的问题,牛人来.In e-e+ collisons,two narrow resonances are oberved.one of mass 3.1GeV/c^2(the J) with width 0.093MeV,and a second of mass 3.7GeV/c^2 and width 0.337MeV.Calculate the lifetimes of these particles..At higher e](/uploads/image/z/14744253-21-3.jpg?t=%E5%85%B3%E4%BA%8Ee%2Be-annihilation%E7%9A%84%E9%97%AE%E9%A2%98%2C%E7%89%9B%E4%BA%BA%E6%9D%A5.In+e-e%2B+collisons%2Ctwo+narrow+resonances+are+oberved.one+of+mass+3.1GeV%2Fc%5E2%28the+J%29+with+width+0.093MeV%2Cand+a+second+of+mass+3.7GeV%2Fc%5E2+and+width+0.337MeV.Calculate+the+lifetimes+of+these+particles..At+higher+e)
关于e+e-annihilation的问题,牛人来.In e-e+ collisons,two narrow resonances are oberved.one of mass 3.1GeV/c^2(the J) with width 0.093MeV,and a second of mass 3.7GeV/c^2 and width 0.337MeV.Calculate the lifetimes of these particles..At higher e
关于e+e-annihilation的问题,牛人来.
In e-e+ collisons,two narrow resonances are oberved.one of mass 3.1GeV/c^2(the J) with width 0.093MeV,and a second of mass 3.7GeV/c^2 and width 0.337MeV.Calculate the lifetimes of these particles..
At higher e+e- collision energies still,a group of narrow resonances are seen at 9.46 GeV/c^2,10.02GeV/c^2 and 10.35GeV/c^2,and a much wider resonance is found at 10.57GeV/c^2.What can be learnt from these so-called gama resonnances?
关于e+e-annihilation的问题,牛人来.In e-e+ collisons,two narrow resonances are oberved.one of mass 3.1GeV/c^2(the J) with width 0.093MeV,and a second of mass 3.7GeV/c^2 and width 0.337MeV.Calculate the lifetimes of these particles..At higher e
lefttime:tau_1=1/GAMMA_1=1/(0.093MeV)
tau_2=1/GAMMA_2=1/(0.337MeV)
第二个问题你需要知道什么?