Pythia, week of 2/1/16

Here is a list of things that I did to answer the problems:

• • I downloaded a git clone made by Professor Eno that contains a pythia program which simulates dijet events (quark-quark, quark-gluon, or gluon-gluon final states) with transverse momentum above 20 GeV in proton-proton collisions with center of mass energy 14 GeV

    • The lines to download the clone, run the files, and display the histograms are:

    • git clone https://github.com/saraheno/honrpythia.git

      • • This puts all the files in a folder called honrpythia

    • cd honrpythia

      • • This goes to that folder

    • source PYTHIA_setup.csh

      • • this sets up the environment to be able to run pythia and root code

    • make pythiaTree

      • • This compiles the code

        • This runs the code to s

• • • • ./pythiaTree >& output.txt

        • simulate the stuff

• • • root

      • • This opens root

    • TBrowser t

      • • This opens TBrowser which will let us crack open the root tree file and see what the histograms look like

    • Within this folder, called /honrpythia, there are only a few files that we need to worry about, the rest just help keep pythia running:

• • • • PYTHIA_setup.csh is a shell script that just configures the terminal to be able to run pythia programs

      • pythiaTree.cc is a c++ program that generates events from pythia and then stores them in a ROOT tree file histogram called hist.root

• • • All the changes to the program that I made to complete the homework are documented in the below pdf.