qhist 0.1.2

A Quick Histogram drawer for `ROOT::TTree` for smoother HEP analysis!

QHist – A Quick Histogram drawer for ROOT::TTree for smoother HEP analysis!

Examples:

• Simple draw from tree and parameter (branch name):

  h1 = QHist()
  h1.trees = t1
  h1.params = 'M'
  h1.draw()

  

• Overlaid comparison between branches, compact syntax:

  QHist(trees=t1, params=['mu_PT/1e3','pi_PT/1e3'], xlabel='PT [GeV]', xmax=60).draw()

  

• Compare between trees, with filtering, and reusable via templating:

  H = QHist(trees=[t1, t2, t3], filters=['mu_PT>20e3'])
  H(params='APT'  , xmin=0  , xlabel='PT-asymmetry').draw()
  H(params='M/1e3', xmax=120, xlabel='Mass [GeV]').draw()

  

Read more on https://qhist.readthedocs.io

Installation & dependencies

It’s available from pip install qhist. The package requires an existing installation of PyROOT.

Disclaimer

This packacge was written and used during my PhD in 2013-2017 at EPFL (Lausanne) and LHCb collaboration (CERN), for the work in Z->tau tau cross-section measurement and H->mu tau searches at LHCb (8TeV). I hope it can be of a good use for future analysis…