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The
production estimate
The estimate is based on
cross section for
production on proton target. Total luminosity for the 2000 run
is
, corresponding to
event rate and the total live time
. For
target
![$\displaystyle L_p = 4L = 1.077*10^8 \mu b^{-1}$](img9.png) |
(1) |
![$\displaystyle L_n = 5L = 1.347*10^8 \mu b^{-1}$](img10.png) |
(2) |
Total number of produced particles
in a given channel is
governed by the decay rate
.
The total number of reconstructed particles depends also on the acceptance
![$\displaystyle N = \sigma L R A$](img13.png) |
(3) |
Rate of interest:
![$\displaystyle \eta' \to \gamma \gamma = 2.12 \%$](img14.png) |
(4) |
![$\displaystyle \eta' \to \omega \gamma = 3.03 \%$](img15.png) |
(5) |
![$\displaystyle \omega \to \pi^0 \gamma = 9.09 \%$](img16.png) |
(6) |
![$\displaystyle \eta' \to \eta \pi^0 \pi^0 = 20.9 \%$](img17.png) |
(7) |
![$\displaystyle \eta \to \gamma \gamma = 39.43 \%$](img18.png) |
(8) |
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Mihajlo Kornicer
2003-12-25