[[TOC(WikiStart,physicsInput,download,Paper,GiBUU_Code_history,GiBUUTeam,depth=2)]] = The GiBUU project = The '''GiBUU project''' provides a unified theory and transport framework in the MeV and GeV energy regimes for * '''elementary reactions on nuclei''', as e.g. * '''electron''' + A, * '''photon''' + A, * '''neutrino''' + A , * '''hadron''' + A (especially '''pion''' + A and '''proton''' + A) * and for '''heavy-ion collisions''', using the same physics input and code. The GiBUU code provides a full dynamical description of the reaction and delivers the complete final state of an event; it can thus be used as an '''event generator'''. The code is freely available. For all the reactions, the flow of particles is modelled within a [wiki:physicsInput Boltzmann-Uehling-Uhlenbeck (BUU) framework]. The relevant degrees of freedom are '''mesons''' and '''baryons''', which propagate in mean fields and scatter according to cross sections which are applicable to the energy range of a few 10 MeV to about 40 GeV. In the higher energy regimes the concept of '''pre-hadronic''' interactions is implemented in order to realize ''color transparancy'' and ''formation time'' effects. For a general overview of the model, its theoretical basis as well as many practical details, refer to the review paper: '''Transport-theoretical Description of Nuclear Reactions'''[[br]] ''O. Buss, T. Gaitanos, K. Gallmeister, H. van Hees, M. Kaskulov, O. Lalakulich, A. B. Larionov, T. Leitner, J. Weil, U. Mosel''[[br]] [http://dx.doi.org/10.1016/j.physrep.2011.12.001 Phys. Rept. 512 (2012) 1-124] / [http://inspirehep.net/record/912923 Inspire] The numerical implementation, named '''GiBUU''' (aka ''The Giessen BUU Project''), is written in modular [wiki:programmingLiterature Fortran 2003] and based upon a [http://subversion.tigris.org/ Subversion] version control system, which allows for a concise control over the full development phase of the code. The [wiki:GiBUU_Code_history history of the code] is rather long and reports about several main development steps. The present initiative accomplished a total rewrite of the source code in a present-day computing language. The main goals of this effort were ''modularization'' to allow for a more transparent multi-user development process, a strict ''reduction of global variables'' for a more transparent debugging procedure, an ''improved control over the development phase'' such that modifications can be backtracked and a ''unified standard version''. Therefore every member of the team works on the same single code version, albeit different temporal branches may coexist. Possible technical overhead is compensated by the benefit of a ''faster distribution of improvements and innovations'' and their ''enhanced sustainability''. GiBUU is being developed by a collaboration of people at different institutes: * Institut für Theoretische Physik of the [http://www.uni-giessen.de Justus-Liebig-Universität Giessen]. * [http://www1.uni-frankfurt.de/fb/fb13/itp/index.html Institut für Theoretische Physik] of the [http://www.uni-frankfurt.de Goethe Universität Frankfurt] * [http://www.physics.auth.gr/en/sections/2/people/215 Physics Department], Aristotle University of Thessaloniki {{{ #!NewsFlash = News = * 30. Jan 2019: Temporary removal of the possibility to 'register' because of hepforge software migration problem. (Solved, online again) * 25. May 2018: New "General Data Protection Regulation" by the EU implemented (Privacy Policy) * '''13. Dez. 2017: Bugfix concerning perturbative weight of outgoing lepton in neutrino events * '''17. Nov. 2017: Slides from tutorial at NuSTEC School 2017 [wiki:tutorial17 available.] * '''29. Okt. 2017: [wiki:releaseNotes GiBUU 2017 has been released.] }}} == General Info == The GiBUU Model * [wiki:physicsInput Physics input] -- Learn more about our model * [//XSection Plots of input cross sections] * [wiki:Paper Publications] * [wiki:Talks Presentations] * [wiki:MovieMain Visualizations, Movies] The GiBUU Team * [wiki:GiBUUTeam Project members and collaborators] * [wiki:GiBUU_Code_history Code History] -- How this code evolved == Using GiBUU == * Get-it-running: ([wiki:impatient ...for the impatients...]) 0. [wiki:tools Prerequisites] -- Used software and tools 1. [wiki:download Download] -- Get the GiBUU source code 2. [wiki:compiling Compiling GiBUU] 3. [wiki:running Running GiBUU] -- How to run a simulation * [wiki:releaseNotes Release Notes] * [//license Register] -- Become a registered GiBUU user * Tutorials: * [wiki:tutorial17 Tutorial: for neutrino induced reactions (K.Gallmeister, 2017)] * [wiki:dileptons Tutorial: Dilepton simulations (J.Weil, 2016)] * [wiki:tutorial Tutorial: pp to AA (J.Weil, 2014)] * [wiki:FAQ] -- Frequently asked questions * [wiki:HowTos] * [wiki:programmingLiterature Fortran] -- Literature, Links, ... == Documentation == * Automatic Code Documentation (Robodoc): * [//Documentation2017/ Release 2017][[BR]] ([//Documentation2017/code/masterindex.html Index], [//Documentation2017/code/robo_namelist.html Namelists], [//Documentation2017/code/robo_output.html Output files]) * [//Documentation/ Current Development Version][[BR]] ([//Documentation/code/masterindex.html Index], [//Documentation/code/robo_namelist.html Namelists], [//Documentation/code/robo_output.html Output files]) * [wiki:ParticleIDs GiBUU particle numbering scheme] * [wiki:jobCards Job cards] -- Examples for GiBUU input files * [wiki:EventOutput Event Output] * [wiki:perWeight] -- How to obtain cross sections from the event files == About GiBUU == * [http://cerncourier.com/cws/article/cern/69903 Neutrinos on nuclei] (by U.Mosel), CERN Courier, 22. September 2017 * [http://www.pro-physik.de/details/news/9884681/Ein_Lasso_fuer_die_Geisterteilchen.html Ein Lasso für die Geisterteilchen], pro-physik, 27. September 2016 == For Developers == * [wiki:wikiInternal Internal pages] (link only available for developers after [/login login]) == Contact == * [mailto:gibuu@projects.hepforge.org Email to GiBUU group] [[BR]] * [mailto:gallmei@th.physik.uni-frankfurt.de Email to webmaster] [[BR]] * [wiki:GiBUUTeam#Contact Postal address] == Privacy Policy == [wiki:Privacy_Policy Privacy Policy]