Gen eta regge ep em pip pim

[staylorjlab]

Add realistic amplitude for the decay eta->pi+pi-e+e-

[gluex]

Test status for this pull request: FAILURE

Failures: failures.txt
Summary: summary.txt
Logs: results/log

Build log: make_GenEtaReggeEpEmPipPim.log
Build report: report_GenEtaReggeEpEmPipPim.txt

[aaust]

Please merge recent changes from the master into your branch to pass the test

[gluex]

Test status for this pull request: SUCCESS

Summary: summary.txt
Logs: results/log

Build log: make_GenEtaReggeEpEmPipPim.log
Build report: report_GenEtaReggeEpEmPipPim.txt

[aaust]

Can you please add an input.in file for this decay to test it?

[gluex]

Test status for this pull request: SUCCESS

Summary: summary.txt
Logs: results/log

Build log: make_GenEtaReggeEpEmPipPim.log
Build report: report_GenEtaReggeEpEmPipPim.txt

[aaust]

Thanks. Can you also explain the G parameter in the help?

> genEtaRegge -h
genEtaRegge: generator for eta production based on Regge trajectory formalism.
 Usage:  genEtaRegge <options>
   Options:  -N<number of events> (number of events to generate)
             -O<output.hddm>   (default: eta_gen.hddm)
             -I<input.in>      (default: eta548.in)
             -R<run number>    (default: 10000)
             -h                (Print this message and exit.)
Coupling constants, photon beam energy range, and eta decay products are
specified in the <input.in> file.

The parameters S and d could also be documented here.

[gluex]

Test status for this pull request: SUCCESS

Summary: summary.txt
Logs: results/log

Build log: make_GenEtaReggeEpEmPipPim.log
Build report: report_GenEtaReggeEpEmPipPim.txt

[aaust]

Looks good

> genEtaRegge -N10000 -Oout.hddm -Ieta_epempippim.in -R30730 -G0.5
G=0.5

 ---------------------------------------- 
 Read File : "eta_epempippim.in"
Photon beam configuration file cobrems.conf
Mass, width of decaying particle [GeV] = 0.547853,0
Coupling constants:
 g_eta_gamma_gamma = 0.0429
 g_rho_eta_gamma = 0.81
 g_omega_eta_gamma = 0.29
 g_phi_eta_gamma = 0.38
number of decay particles = 4
#GEANT ids of decay particles (1=gamma,7=pi0, 8=pi+, 9=pi-, 17=eta).
Particle id's of decay particles = 2 3 8 9

BeamProperties: Parsing config file cobrems.conf

Initialization for coherent bremsstralung calculation
 electron beam energy: 11.6 GeV
 primary coherent edge: 8.8 GeV
Total cross section at 7 GeV = 0.0638911 micro-barns
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Closed HDDM file
 10000 event written to out.hddm