inclusive J/psi production at midrapidity in pp collisions at 5.36 TeV,
Model comparision of the diffeneration cross section as a function of pT.
prompt J/psi : NRQCD, CS+CO, NLO (Butenschone et al. LDME)
non-prompt J/psi : FONLL
Data set : LHC24ap pass1,
MC : LHC25k3 (prompt), LHC25b16(non-prompt)
event selection :
* |vtx_z| < 10 cm
* sel8 (minimum bias in Run3)
track selection :
* pT > 1GeV/c, |eta| < 0.9
* TPCncls > 90, TPC chi2 < 4
* ITS chi2 < 5, ITSisAny (at least of one hit among the inner barrel ITS)
* |DCA_xy| < 0.5 cm, |DCA_z| < 0.5cm
PID selection :
* |nsigma TPC electron| < 3,
* nsigma TPC proton > 2.5 (at p_IN < 3 GeV/c) , nsigma TPC proton > 2 (at p_IN > 3 GeV/c)
* nsigma TPC pion > 2.5 (at p_IN < 3 GeV/c) , nsigma TPC pion > 2 (at p_IN > 3 GeV/c)