add Gun for Xi_cc (#74)

* add Gun for Xi_cc

* fix X(3872) decay channel

Co-authored-by: Marianna Mazzilli <mmazzill@alicecerno2.cern.ch>

Author: mmazzilli

examples/pythia8/pythia_onia_X.cfg

@@ -59,6 +59,6 @@ Charmonium:qqbar2ccbar(3PJ)[3S1(8)]g = off,off,off,on
 200553:onIfAll = 13 -13
 200553:onIfAll = 11 -11 //e+e-
 
-9920443:addChannel = 1 0 443 211 -211
+9920443:addChannel = 1 1 0 443 211 -211
 9920443:onMode = off
 9920443:onIfMatch = 443 211 -211

examples/scripts/default_configfile.ini

@@ -82,5 +82,8 @@ custom_gen = rpythia8-gun --pdg 4122 --px 1. --py 0. --pz 0. --xProd 1. --yProd
 [GUN_Lc_pK0s]
 custom_gen = rpythia8-gun --pdg 4122 --px 1. --py 0. --pz 0. --xProd 1. --yProd 0. --zProd 0. --config $O2DPG_ROOT/MC/config/PWGHF/pythia8/decayer/force_hadronic_D_forceLcChannel2.cfg --decay
 
+[GUN_Xicc]
+custom_gen = rpythia8-box --pdg 4422 --etamin -2. --etamax 2. --phimin 0. --phimax 6.28 --pmin 0. --pmax 100. --xProd 0. --yProd 0. --zProd 0. --config /home/mmazzill/config/decayer/force_Xicc.cfg --background-config $DELPHESO2_ROOT/examples/pythia8/pythia8_inel.cfg --decay
+
 [ONIA_X] #(need O2DPG loaded)
 custom_gen = rpythia8 --config $DELPHESO2_ROOT/examples/pythia8/pythia_onia_X.cfg