Software trigger and event reconstruction : Executive Summary

Realizing the physics programs of the planned and upgraded high-energy physics (HEP) experiments over the next 10 years will require the HEP community to address a number of challenges in the area of software and computing. For this reason, the HEP software community has engaged in a planning process over the past two years, with the objective of identifying and prioritizing the research and development required to enable the next generation of HEP detectors to fulfill their full physics potential. The aim is to produce a Community White Paper (CWP) [1] which will describe the community strategy and a roadmap for software and computing research and development in HEP for the 2020s. The topics of event reconstruction and software triggers were considered by a joint working group and are summarized together in this document. Editors: Vladimir Vava Gligorov and David Lange Contributors: Albrecht, Johannes; Bloom, Kenneth; Boccali, Tommaso; Boveia, Antonio; De Cian, Michel; Doglioni, Caterina; Dziurda, Agnieszka; Farbin, Amir; Fitzpatrick, Conor; Gaede, Frank; George, Simon; Gligorov, Vladimir; Grasland, Hadrien; Grillo, Lucia; Hegner, Benedikt; Kalderon, William; Kama, Sami; Koppenburg, Patrick; Krutelyov, Slava; Kutschke, Rob; Lampl, Walter; Lange, David; Moyse, Ed; Norman, Andrew; Petric, Marko; Polci, Francesco; Potamianos, Karolos; Ratnikov, Fedor; Raven, Gerhard; Ritter, Martin; Rizzi, Andrea; Rodrigues, Eduardo; Rousseau, David; Salzburger, Andy; Sexton Kennedy, Liz; Sokoloff, Michael D; Stewart, Graeme; Ustyuzhanin, Andrey; Viren, Brett; Williams, Mike; Winklmeier, Frank; Wuerthwein, Frank 1 Technische Universität Dortmund, Dortmund, Germany 2 University of Nebraska-Lincoln, Lincoln, NE, USA 3 INFN Sezione di Pisa, Universit di Pisa, Scuola Normale Superiore di Pisa, Pisa, Italy 4 The Ohio State University, Columbus, OH, USA 5 Physikalisches Institut, Ruprecht-Karls-Universitat Heidelberg, Heidelberg, Germany 6 Fysiska institutionen, Lunds Universitet, Lund, Sweden 7 CERN, Geneva, Switzerland 8 Department of Physics, The University of Texas at Arlington, Arlington, TX, USA 9 Institute of Physics, cole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland 10 Deutsches Elektronen-Synchrotron, Hamburg, Germany 11 Department of Physics, Royal Holloway University of London, Surrey, United Kingdom 12 LPNHE, Universit Pierre et Marie Curie, Universit Paris Diderot, CNRS/IN2P3, Paris, France 13 LAL, Universit Paris-Sud and CNRS/IN2P3, Orsay, France 14 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom 15 Physics Department, Southern Methodist University, Dallas TX, United States of America 16 Nikhef National Institute for Subatomic Physics and Vrije Universiteit Amsterdam, Amsterdam, The Nether-