Difference between revisions of "Primakoff photoproduction of eta off Helium4"

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(Version 2)
(Version 2)
Line 42: Line 42:
 
*ebeam 11.3 GeV - type primakoff integral 1758.32 pb-1  
 
*ebeam 11.3 GeV - type primakoff integral 1758.32 pb-1  
 
*ebeam 10.047 GeV - type primakoff integral 3068.47 pb-1  
 
*ebeam 10.047 GeV - type primakoff integral 3068.47 pb-1  
*ebeam 12 GeV - type incoherent integral 67.1596 pb-1
 
*ebeam 11.3 GeV - type incoherent integral 77.5549 pb-1
 
*ebeam 10.047 GeV - type incoherent integral 115.968 pb-1
 
 
*ebeam 12 GeV - type qfneutron integral 67.1596 pb-1  
 
*ebeam 12 GeV - type qfneutron integral 67.1596 pb-1  
 
*ebeam 11.3 GeV - type qfneutron integral 77.5549 pb-1  
 
*ebeam 11.3 GeV - type qfneutron integral 77.5549 pb-1  
Line 54: Line 51:
 
*ebeam 11.3 GeV - type pos-inter integral 77.5549 pb-1  
 
*ebeam 11.3 GeV - type pos-inter integral 77.5549 pb-1  
 
*ebeam 10.047 GeV - type pos-inter integral 115.968 pb-1  
 
*ebeam 10.047 GeV - type pos-inter integral 115.968 pb-1  
 +
*ebeam 12 GeV - type neg-inter integral 67.1596 pb-1
 +
*ebeam 11.3 GeV - type neg-inter integral 77.5549 pb-1
 +
*ebeam 10.047 GeV - type neg-inter integral 115.968 pb-1
 
#Note: interference = N_{interp}^{yield}-N_{intern}^{yield}
 
#Note: interference = N_{interp}^{yield}-N_{intern}^{yield}

Revision as of 15:17, 25 January 2022

Input cross-section

The input cross-section used can be found here: /work/halld/home/ijaegle/he4_eta_primakoff/PRIMEX-D_eta_he4-corrected-10112021-notree.root

  1. all: Primakoff+Coherent+Interference+Incoherent
  2. tot: Primakoff+Coherent+Interference
  3. prim: Primakoff
  4. coh: Coherent
  5. interp: positive component of the interference
  6. intern: negative component of the interference
  7. inc: incoherent quasi-free proton & neutron not distinguish
  8. inc_p: incoherent or quasi-free proton
  9. inc_n: incoherent or quasi-free neutron

Version 1

The simulation can be found here: /cache/halld/gluex_simulations/PrimEx-eta-phase-I/eta-he4-19062021

There are in fact 4 distinct simulations

  • Primakoff only (Geant4_bkg_None_runnb_?????_gen_primex_eta_he4_to_2g_rim)
  • Primakoff + Coherent + interference (Geant4_bkg_None_runnb_?????_gen_primex_eta_he4_to_2g)
  • Quasi-free off proton (Geant4_bkg_None_runnb_?????_gen_primex_eta_he4_to_2g_inc) and neutron (Geant4_bkg_None_runnb_?????_gen_primex_eta_he4_to_2g_inc_n)

For each set, 20M events were thrown between 6 and 12GeV corresponding to the He (full target) runs range ie 323 runs. The number of events simulated for each run is proportional to the flux of this wrt to the total 323 runs flux.

Version 2

The simulation can be found here: /work/halld/home/gxproj2/gluex_simulations/PrimEx-eta-good-test-14012022

Simulation for:

  1. 3 runs (phase 1 and 2)
  2. 3 eta decays (gg/3pi0/3pi)
  3. From 8GeV to endpoint energy
  4. All components and combined
  5. 1M for each sample or in integrated luminosity:
  • ebeam 12 GeV - type all integral 40.5362 pb-1
  • ebeam 11.3 GeV - type all integral 47.1571 pb-1
  • ebeam 10.047 GeV - type all integral 71.4988 pb-1
  • ebeam 12 GeV - type coherent integral 102.256 pb-1
  • ebeam 11.3 GeV - type coherent integral 120.313 pb-1
  • ebeam 10.047 GeV - type coherent integral 186.455 pb-1
  • ebeam 12 GeV - type primakoff integral 1406.14 pb-1
  • ebeam 11.3 GeV - type primakoff integral 1758.32 pb-1
  • ebeam 10.047 GeV - type primakoff integral 3068.47 pb-1
  • ebeam 12 GeV - type qfneutron integral 67.1596 pb-1
  • ebeam 11.3 GeV - type qfneutron integral 77.5549 pb-1
  • ebeam 10.047 GeV - type qfneutron integral 115.968 pb-1
  • ebeam 12 GeV - type qfproton integral 67.1596 pb-1
  • ebeam 11.3 GeV - type qfproton integral 77.5549 pb-1
  • ebeam 10.047 GeV - type qfproton integral 115.968 pb-1
  • ebeam 12 GeV - type pos-inter integral 67.1596 pb-1
  • ebeam 11.3 GeV - type pos-inter integral 77.5549 pb-1
  • ebeam 10.047 GeV - type pos-inter integral 115.968 pb-1
  • ebeam 12 GeV - type neg-inter integral 67.1596 pb-1
  • ebeam 11.3 GeV - type neg-inter integral 77.5549 pb-1
  • ebeam 10.047 GeV - type neg-inter integral 115.968 pb-1
  1. Note: interference = N_{interp}^{yield}-N_{intern}^{yield}