Stelzer's MadGraph article, 9th most cited in HEP for 2014

Siv Schwink

Associate Professor Timothy Stelzer, author of the MadGraph matrix element generator for high-energy physics research
Associate Professor Timothy Stelzer, author of the MadGraph matrix element generator for high-energy physics research
Associate Professor Timothy Stelzer's 2011 article "MadGraph 5: Going Beyond", published in the Journal of High Energy Physics [1106 (2011) 128] was cited 626 times last year making it the ninth most cited article in high-energy physics during 2014, according to INSPIRE-HEP, an open access digital library for the field of high-energy physics. The article introduces the upgraded capabilities of version 5 of MadGraph®, an online software program written by Stelzer and his collaborators.

The matrix-element-generating software has had a broad and lasting impact. When it was first introduced in 1994, MadGraph® significantly simplified and expedited the way scientists studying high-energy particle collisions approach the work of calculating cross sections for high-energy collisions. The software automatically generates the Feynman diagrams and helicity amplitude code for tree-level standard model processes. It’s designed to be a platform for collaboration among high-energy physicists working on theoretical, phenomenological, or simulation projects.

Stelzer invited several colleagues to join him in developing subsequent versions of the program. Development of version 5 began in 2009 with Johan Alwall of Fermi National Laboratory in Batavia, IL, Michel Herquet of the National Institute for Subatomic Physics (NIKHEF) in Amsterdam, Netherlands, and Fabio Maltoni and Olivier Mattelaer of the CP3 at Louvain University in Belgium. Version 5 implemented several new algorithms for improved performance and functionality, to make the tool useful for a larger group of researchers.

The software allows researchers to generate the hard scattering process and its constituent decay processes separately, and to iteratively combine them, all with great speed. Advanced users can also use the software to implement new physics models by defining new particles and interactions.

Written in the Python programming language for its exceptional flexibility, MadGraph® is hosted by the University of Illinois and is accessible to any researchers, free of cost. The 626 core references to this work over the course of last year are a clear reflection of just how valuable the MadGraph® digital modeling tool is to ongoing high-energy physics research.



Recent News

  • Research
  • High Energy Physics
  • Particle Physics
The lead ion run is under way. On 8 November at 21:19, the four experiments at the Large Hadron Collider - ALICE, ATLAS, CMS and LHCb - recorded their first collisions of lead nuclei since 2015. For three weeks and a half, the world’s biggest accelerator will collide these nuclei, comprising 208 protons and neutrons, at an energy of 5.02 teraelectronvolts (TeV) for each colliding pair of nucleons (protons and neutrons). This will be the fourth run of this kind since the collider began operation. In 2013 and 2016, lead ions were collided with protons in the LHC.

Anne Sickles is co-convener of the ATLAS Heavy Ion Working Group, which will use these data.
  • Outreach
  • Quantum Information Science
  • Atomic, Molecular, and Optical Physics
  • Quantum Physics
  • Quantum Computing

A two-day summit in Chicago taking place November 8 and 9 has brought together leading experts in quantum information science to advance U.S. efforts in what’s been called the next technological “space race”—and to position Illinois at the forefront of that race. The inaugural Chicago Quantum Summit, hosted by the Chicago Quantum Exchange, includes high-level representation from Microsoft, IBM, Alphabet Inc.’s Google, the National Science Foundation, the U.S. Department of Energy, the U.S. Department of Defense, and the National Institute of Standards and Technology.

The University of Illinois at Urbana-Champaign recently joined the Chicago Quantum Exchange as a core member, making it one of the largest quantum information science (QIS) collaborations in the world. The exchange was formed last year as an alliance between the University of Chicago and the two Illinois-based national laboratories, Argonne and Fermilab.

Representing the U of I at the summit are physics professors Brian DeMarco, Paul Kwiat, and Dale Van Harlingen, who are key players in the planned Illinois Quantum Information Science and Technology Center (IQUIST) on the U of I campus. The U of I news bureau announced last week the university’s $15-million commitment to the new center, which will form a collaboration of physicists, engineers, and computer scientists to develop new algorithms, materials, and devices to advance QIS.

  • Accolades

Loomis Laboratory has been awarded a third-place prize in the Energy Conservation Incentive Program of the University of Illinois at Urbana-Champaign. This program, administered by Facilities and Services, both funds and recognizes efforts to reduce energy consumption through facilities upgrades. A plaque commemorating the award will be mounted in the Walnut Hallway. The award comes with a $26,000 prize for additional energy projects.

  • Research
  • Quantum Information Science
  • Atomic, Molecular, and Optical Physics

The University of Illinois at Urbana-Champaign is making a $15 million investment in the emerging area of quantum information science and engineering, a field poised to revolutionize computing, communication, security, measurement and sensing by utilizing the unique and powerful capabilities of quantum mechanics.