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Flat π⁰ and η Distribution for High- pT Statistics #2318

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Flat π⁰ and η Distribution for High- pT Statistics #2318

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ac6b522
Update GeneratorHF_Non_Hfe.json
rashigupt Apr 10, 2026
230de7d
Update pythia8_NonHfe.cfg
rashigupt Apr 11, 2026
813315e
Update GeneratorHF_Non_Hfe.json
rashigupt Apr 13, 2026
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33 changes: 24 additions & 9 deletions MC/config/PWGHF/hybrid/GeneratorHF_Non_Hfe.json
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Original file line number Diff line number Diff line change
Expand Up @@ -3,12 +3,7 @@
{
"name": "pythia8",
"config": {
"config": "${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGHF/pythia8/generator/pythia8_NonHfe.cfg",
"hooksFileName": "",
"hooksFuncName": "",
"includePartonEvent": true,
"particleFilter": "",
"verbose": 0
"config": "${O2DPG_MC_CONFIG_ROOT}/MC/config/common/pythia8/generator/pythia8_NonHfe.cfg"
},
"triggers": {
"mode": "or",
Expand All @@ -19,9 +14,29 @@
}
]
}
},
{
"name": "boxgen",
"config": {
"pdg": 111,
"prange[0]": 0.1,
"prange[1]": 50.0,
"eta[0]": -0.8,
"eta[1]": 0.8,
"number": 1
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@wuctlby wuctlby Apr 13, 2026

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Dear @rashigupt , thanks a lot for the works. As mentioned by @singhra1994 , could you please confirm the values of the parameter? Or could you please confirm that number: 1 is what you desired? You can find the meaning of these parameters from https://github.com/AliceO2Group/AliceO2/blob/dev/Generators/include/Generators/BoxGenerator.h

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@rashigupt rashigupt Apr 15, 2026 •
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Thank you for your comment.
I have checked the parameters, and number = 1 corresponds to the number of particles generated per event in the BoxGenerator.
My intention here is to enhance the statistics for pion and eta at high momentum using a flat distribution in (p). I noticed that the default value is number = 10.
Could you please advise what value of number would be more appropriate if the goal is to increase the statistics while keeping the distribution flat?

}
},
{
"name": "boxgen",
"config": {
"pdg": 221,
"prange[0]": 0.1,
"prange[1]": 50.0,
"eta[0]": -0.8,
"eta[1]": 0.8,
"number": 1
}
}
],
"fractions": [
1
]
"fractions": [1, 1, 1]
}
19 changes: 0 additions & 19 deletions MC/config/PWGHF/pythia8/generator/pythia8_NonHfe.cfg
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Expand Up @@ -14,25 +14,6 @@ SoftQCD:inelastic on # all inelastic processes
ParticleDecays:limitTau0 on
ParticleDecays:tau0Max 10.

### switching on Pythia Mode2
ColourReconnection:mode 1
ColourReconnection:allowDoubleJunRem off
ColourReconnection:m0 0.3
ColourReconnection:allowJunctions on
ColourReconnection:junctionCorrection 1.20
ColourReconnection:timeDilationMode 2
ColourReconnection:timeDilationPar 0.18
StringPT:sigma 0.335
StringZ:aLund 0.36
StringZ:bLund 0.56
StringFlav:probQQtoQ 0.078
StringFlav:ProbStoUD 0.2
StringFlav:probQQ1toQQ0join 0.0275,0.0275,0.0275,0.0275
MultiPartonInteractions:pT0Ref 2.15
BeamRemnants:remnantMode 1
BeamRemnants:saturation 5


### switch off all decay channels
111:onMode = off
221:onMode = off
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