Slide 4                S.Olsen  
                                               CUSeeMe 3/28/91  


      Fig 4a shows M_{k+pi-pi+} vs M_{k+pi-} and 
                   M_{k-pi+pi-} vs M_{k-pi+} (2 entries/event)

      Fig 4b shows M_{k+pi-pi+} mass with |M_{k+pi-}-0.896|<0.05 
               and M_{k-pi+pi-} mass with |M_{k-pi+}-0.896|<0.05 
               (2 entries/event)

------------

      Fig 5:  Fit Fig =3b to k1*(1200) + k1(1400) Breit Wigners + F_{bkg}

      F_{bkg} = Par_1[ Q^{1/2} + Par_2*Q^{3/2} + Par_3*Q^{5/2}]  Q > 0
              = 0                                                Q < 0     
       (Q = M_{kpipi} - M_{k*} - M_{pi})

      Here I fix masses and widths of the K1(1270) and K1(1400)
                                  mass     1.270        1.400
                                  width    0.090        0.174
      at the PDG values, since both are well above the k* pi mass
      threshold.

      Result:   K1(1270)   N_evts = 16.5 +/-  7.2 events
                K!(1400)   N_evts = 16.3 +/- 12.7 events
                                  < 32.6 90%cl
-----------

                           N_evt 
     Br =  -----------------------------------------------------
           N_{psi'} acceptance Br(K1 -->k*^0 k)  Br(k*^0-->k+pi-)
  
(N_{psi'} = 3.44 x 10*6   acceptance = 0.12 +/- 0.1
 Br(K1(1270)-->k*^0k = 2/3*(0.16 +/- 0.05) = 0.11 +/- 0.04
 Br(K1(1400)-->k*^0k = 2/3*(0.94 +/- 0.06) = 0.63 +/- 0.04
 Br(k*^0-->K+pi-) = 2/3  )

Br(psi' --> K1(1270)^+k^- +cc) = (0.56 +/- 0.24 +/- 0.28)x 10^{-3}
                                   agrees with Br from k rho decay 

Br(psi' --> K1(1400)^+k^- +cc) <  0.19 x 10^{-3}  90% cl