This press release was originally published by CERN to announce that the ALICE, ATLAS, CMS and LHCb collaborations won the 2025 Breakthrough Prize in Fundamental Physics by the Breakthrough Prize Foundation.
The United States is the largest participating country in the CMS collaboration. US CMS, hosted by the Department of Energy’s Fermi National Accelerator Laboratory, comprises about a third of the CMS collaboration and, outside of CERN, Fermilab is the largest member institution on CMS. Fermilab Distinguished Scientists Joel Butler and Patricia McBride were co-spokespeople for the CMS collaboration for a period during the time recognized by the Breakthrough prize.
This award honors the precise measurements achieved by the CMS collaboration on the Higgs boson since its discovery in 2012. The award also recognizes the collaboration’s exploration of the electroweak scale and beyond, matter/antimatter asymmetry, and studying the dense state of matter that prevailed in the early universe.
“We were delighted to receive this award because it recognizes the work the entire collaboration has been doing since the Higgs boson discovery,” said McBride, who accepted the award on behalf of CMS. McBride served as CMS co-spokesperson from 2022-2024 and held this role when the prize decision was made. “We’ve learned so much about the Higgs boson and how it interacts with all the fundamental particles.”
CMS is an international collaboration with members from 240 institutes across more than 50 countries.
This weekend, the ALICE, ATLAS, CMS and LHCb collaborations at the Large Hadron Collider at CERN were honoured with the Breakthrough Prize in Fundamental Physics by the Breakthrough Prize Foundation. The prize is awarded to the four collaborations, which unite thousands of researchers from more than 70 countries, and concerns the papers authored based on LHC Run-2 data up to July 2024. It was received by the spokespersons who led the collaborations during that time.
The prize was awarded to the collaborations for their “detailed measurements of Higgs boson properties confirming the symmetry-breaking mechanism of mass generation, the discovery of new strongly interacting particles, the study of rare processes and matter-antimatter asymmetry, and the exploration of nature at the shortest distances and most extreme conditions at CERN’s Large Hadron Collider”.
“I am extremely proud to see the extraordinary accomplishments of the LHC collaborations honoured with this prestigious Prize,” said Fabiola Gianotti, Director-General of CERN. “It is a beautiful recognition of the collective efforts, dedication, competence and hard work of thousands of people from all over the world who contribute daily to pushing the boundaries of human knowledge.”
Following consultation with the experiments’ management teams, the Breakthrough Prize Foundation will donate the $3 million Prize to the CERN & Society Foundation. The Prize money will be used to offer grants for doctoral students from the collaborations’ member institutes to spend research time at CERN, giving them experience in working at the forefront of science and new expertise to bring back to their home countries and regions.
ATLAS and CMS are general-purpose experiments, which pursue the full programme of exploration offered by the LHC’s high-energy and high-intensity proton and ion beams. They jointly announced the discovery of the Higgs boson in 2012 and continue to investigate its properties.
“This prize recognises the collective vision and monumental effort of thousands of ATLAS collaborators worldwide”, says ATLAS spokesperson Stephane Willocq. “Their talent and dedication, and the support of our public funding agencies, enabled the scientific breakthroughs that are being celebrated today. These results have transformed our understanding of the Universe at the most fundamental level.”
“CMS is deeply honoured to receive this prestigious prize,” said CMS spokesperson Gautier Hamel de Monchenault. “Through continuous innovation in exploiting the data from the Large Hadron Collider over the past fifteen years, the CMS collaboration is conducting a thorough characterisation of the Higgs boson, exploring the electroweak scale and beyond and probing the hot, dense state of nuclear matter that prevailed in the early Universe.”
ALICE studies quark-gluon plasma, a state of extremely hot and dense matter that existed in the first microseconds after the Big Bang, while LHCb explores minute differences between matter and antimatter, violation of fundamental symmetries and the complex spectra of composite particles (“hadrons”) made of heavy and light quarks, among other things.
“The ALICE collaboration is honoured to receive the Breakthrough Prize for the investigation of the properties of the hottest and densest matter available in a laboratory, quark-gluon plasma”, says ALICE spokesperson Marco Van Leeuwen. “The new grants funded through this prize will contribute to training the next generation of ALICE scientists.”
“The award of the 2025 Breakthrough Prize is a great honour for the LHCb collaboration. It underlines the importance of the many measurements made by the LHCb experiment in flavour physics and spectroscopy through the exploration of subtle differences between matter and antimatter and the discovery of several new heavy quark hadrons”, says LHCb spokesperson Vincenzo Vagnoni.
By performing these extraordinarily precise and delicate tests, the LHC experiments have pushed the boundaries of knowledge of fundamental physics to unprecedented limits. They will continue to do so with the upcoming upgrade of the Large Hadron Collider, the High-Luminosity LHC, which aims to ramp up the performance of the LHC, starting in 2030, in order to increase the potential for discoveries.
Fermi National Accelerator Laboratory is America’s premier national laboratory for particle physics and accelerator research. Fermi Forward Discovery Group manages Fermilab for the U.S. Department of Energy Office of Science. Visit Fermilab’s website at www.fnal.gov and follow us on social media.
DOE’s Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit energy.gov/science.
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