Tunable cb patch (#2448)

* Update and rename GeneratorHF_D2H_ccbar_and_bbbar3_PbPb.ini to GeneratorHF_D2H_ccbar3_and_bbbar_PbPb.ini

* Rename GeneratorHF_D2H_ccbar_and_bbbar3_PbPb.C to GeneratorHF_D2H_ccbar3_and_bbbar_PbPb.C

Author: wuctlby

…eneratorHF_D2H_ccbar_and_bbbar3_PbPb.ini …eneratorHF_D2H_ccbar3_and_bbbar_PbPb.iniMC/config/PWGHF/ini/GeneratorHF_D2H_ccbar_and_bbbar3_PbPb.ini renamed to MC/config/PWGHF/ini/GeneratorHF_D2H_ccbar3_and_bbbar_PbPb.ini MC/config/PWGHF/ini/GeneratorHF_D2H_ccbar_and_bbbar3_PbPb.ini renamed to MC/config/PWGHF/ini/GeneratorHF_D2H_ccbar3_and_bbbar_PbPb.ini

@@ -2,7 +2,9 @@
 ### The external generator derives from GeneratorPythia8.
 [GeneratorExternal]
 fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGHF/external/generator/generator_pythia8_embed_hf.C
-funcName=GeneratorPythia8EmbedHFRatio(3.0)
+funcName=GeneratorPythia8EmbedHFRatio(0.2)
+### bOverCRatio = 0.2 generates quarkDpgList = [5,4,4,4] 
+### because the loop stops at the first valid iteration (c=3, b=1) due to the early break, rather than finding the true closest ratio
 
 [GeneratorPythia8]
 config=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGHF/pythia8/generator/pythia8_charmhadronic_with_decays_Mode2_hardQCD_5TeV.cfg