S.Olsen CSU 3/15/96 OHP6

   **MC Acceptance calculations (HOWL):

                           k*(890) k*(890)bar  |  k*(890)k*_2(1430)
                          ---------------------|---------------------
Preselect:  generated          5000                  5000
            nchrg = 4          3430                  3217
            net Q = 0                                3047
            < 2 muons          3205                  3028
            < 2 e's            3192                  3022
            |cos\theta|<0.74   2121                  1645 
            4-c chisq < 50     1584                  1222
                             --------             -----------
Select:     chi2(2mu)>chi2(kk) 1551                  1201     
            chi2(pipikk)<12.   1405                  1078  
            M_{pipi} < 2.4     1404                  1075
            1.05<M_{kk}<3.0    1326                  1051    
            |M_{pipi}-.77|<.12  978                   795       lose 25%
            |K_{kbpi}-.89|<.09  672                   426        
                              -------              ----------

BW fit                         687 +/- 27           433 +/- 25 (?)

accept                       0.137+/-0.005          0.087 +/- 0.005  

---------

   **Br calculations (preliminary):
                                     Nevt
Br(psi'-->k* k*bar)=-------------------------------- 8.5 +/- 3.0 x 10^{-5}  
                    N_{psi'} accept Br(k*->K+pi-)**2 
                      |         |           |
                   3.4x10^6  0.14+/-0.01  (2/3)**2

              !!!!!Still need psi'->k*k-pi+ subtraction!!!!

Br(psi'-->k* k*_2bar +cc)
                  Nevt
    <  -------------------------------------------- = 2.4 x 10^{-4}  
       N_{psi'} accept Br(k*->K+pi-)Br(K*_2->k+pi-)

A little higher than Yuan Changzheng's result.