and data acquisition in particle physics (high energy physics) experiments, and most experimental plots and results in those subfields are obtained using ROOT. The inclusion of a C++ interpreter (CINT until version 5.34, Cling from version 6.00) makes this package very versatile as it can be used in interactive, scripted and compiled modes in a manner similar to commercial products like MATLAB. On July 4, 2012 the ATLAS and CMS LHC's experiments presented the status of the Standard Model Higgs search. All the plots presented that day were done using ROOT. Criticisms Criticisms of ROOT include its difficulty for beginners, as well as various aspects of its design and implementation. Frequent causes of frustration include extreme code bloat, heavy use of global variables, and an overcomplicated class hierarchy. From time to time these issues are discussed on the ROOT users mailing list. While scientists dissatisfied with ROOT have in the past managed to work around its flaws, some of the shortcomings are regularly addressed by the ROOT team. The CINT interpreter, for example, has been replaced by the Cling interpreter, and numerous bugs are fixed with every release. Applications of ROOT Several particle physics collaborations have written software based on ROOT, often in favor of using more generic solutions (e.g. using ROOT containers instead of STL). Some of the running particle physics experiments using software based on ROOT ALICE ATLAS BaBar experiment Belle Experiment (an electron positron collider at KEK (Japan)) Belle II experiment (successor of the Belle experiment) BES III CB-ELSA/TAPS CMS COMPASS experiment (Common Muon and Proton Apparatus for Structure and Spectroscopy) CUORE (Cryogenic Underground Observatory for Rare Events) D0 experiment GlueX Experiment GRAPES-3 (Gamma Ray Astronomy PeV EnergieS) H1 (particle detector) at HERA collider at DESY, Hamburg LHCb MINERνA (Main Injector Experiment for ν-A) MINOS (Main injector neutrino oscillation search) NA61 experiment (SPS Heavy Ion and Neutrino Experiment) NOνA OPERA experiment PHENIX detector PHOBOS experiment at Relativistic Heavy Ion Collider SNO+ STAR detector (Solenoidal Tracker at RHIC) T2K experiment Future particle physics experiments currently developing software based on ROOT Mu2e Compressed Baryonic Matter experiment (CBM) PANDA experiment (antiProton Annihilation at Darmstadt (PANDA)) Deep Underground Neutrino Experiment (DUNE) Hyper-Kamiokande (HK (Japan)) Astrophysics (X-ray and gamma-ray astronomy, astroparticle physics) projects using ROOT AGILE Alpha Magnetic Spectrometer (AMS) Antarctic Impulse Transient Antenna (ANITA) ANTARES neutrino detector CRESST (Dark Matter Search) DMTPC DEAP-3600/Cryogenic Low-Energy Astrophysics with Neon(CLEAN) Fermi Gamma-ray Space Telescope