cbes - simulate and analyze dielectron cocktails

general

• download cocktail, contributions and input functions for all energies: http://downloads.the-huck.com/star/data/root/BesCocktails.tar.gz
• more documentation (somewhat outdated), also has comparisons to 19/200 GeV: http://star.the-huck.com/models-simulations/cocktail-simulations/
• code: http://cgit.the-huck.com/cgit.cgi/BesCocktail/tree/ (start with programs/cbes.cc)
• configuration file: http://cgit.the-huck.com/cgit.cgi/BesCocktailDb/tree/db.yml

archive contents

• rawhMee.root: raw histograms filled from ntuple output of single mesons & ccbar simulations includes passCuts and branching ratio weight for ccbar, also for pt-differential
• cocktail.root: final scaled cocktails/contributions as compared to data
• *_input.roots contain functions (and acc. histograms) for the different input sources (implementation see http://cgit.the-huck.com/cgit.cgi/BesCocktail/tree/Functions.cxx):
  • fM: BreitWigner to sample invariant mass for two-body decays
  • fRes: MomentumResolution (MomRes) used in momentum smearing
  • fCB: double-sided CrystalBall used in momentum smearing
  • fKW: Kroll-Wada to sample invariant mass in dalitz decays
  • fPt: Tsallis-Blast-Wave dN/dpT such that Integral{dN/dpT dpT} = 1 (Probability Distribution), resulting e+e- yield later scaled acc. to dN/dy in db.yml
• see http://cgit.the-huck.com/cgit.cgi/BesCocktail/tree/Analysis.cxx

install & usage

• install boost
• install yaml-cpp
• install ckon
• get BesCocktail
• get MyCollection
• put BesCocktail and MyCollection in StRoot/
• run ckon setup and adjust ckon.cfg
• run ckon -j4 to compile cbes
• see ./build/bin/cbes -h for help
• get an example database yaml file
• get pythia ccbar simulation input files
• simulate particles: ./build/bin/cbes -e 200 -v <particle> <particle> = pion, eta, etap, rho, omega, phi, jpsi
• loop and generate output histos: ./build/bin/cbes -e 200 -l --pyfile <file> ana
• use --db to set link to db.yml file