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EXOTIC (BACKWARD) EVENTS REMOVED BY SUBTRACTING IMITATION DOUBLE DELTA PRODUCTION DUE TO THE PROCESS N P --> N*(1600)+ <DEL++ PI-> N.
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Axis error includes +- 5/5 contribution (UNCERTAINTY IN RATED EFFICIENCY).
Axis error includes +- 5/5 contribution (UNCERTAINTY IN RATED EFFICIENCY).
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THESE ARE CORRECTED DATA FROM YF 40, 34. PROPER TABLES IN YF 40, 34 MUST. BE REPLACED BY THE GOOD ONES.
In the study of the reaction $e^+e^-\to K_{S}K_{L}$ at the VEPP-2M $e^+e^-$ collider with the SND detector the nuclear interaction length of $K_{L}$ meson in NaI(Tl) has been measured. Its value is found to be 30--50 cm in the $K_{L}$ momentum range 0.11--0.48 GeV/$c$. The results are compared with the values used in the simulation programs GEANT4 and UNIMOD.
The energy interval ($\sqrt{s}$), integrated luminosity ($IL$), number of selected events ($N$), number of background events ($N_{\rm bkg}$), number of events with five or more photons ($N_{5\gamma}$, $N_{5\gamma,{\rm bkg}}$), and the measured $K_L$ nuclear interaction length in NaI(Tl) ($\lambda_{\rm int}$).