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Gautier Hamel de Monchenault

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Gautier Hamel de Monchenault
Born1964
Paris
NationalityFrench
EducationGraduate School of Physics and Industrial Chemistry of the City of Paris - PSL
Known forCMS Deputy Spokesperson (2024-2026) at CERN
AwardsJoliot-Curie Prize of the French Physical Society

Gautier Hamel de Monchenault (born 1964 in Paris, France) is a French particle physicist who has contributed to the Standard Model, CP violation and the discovery of the Higgs boson. He is a senior researcher at the French Alternative Energies and Atomic Energy Commission (CEA).[1] Hamel de Monchenault is appointed CERN Director for Research and Computing for the period 2026–2030.[2]

Early life and education

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Gautier Hamel de Monchenault graduated from ESPCI ParisTech.[3] He completed his doctoral research at the University of Paris VI and CERN, focusing on high-energy particle physics.[4]

Career

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DELPHI experiment

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Hamel de Monchenault began his research career at CERN as part of the DELPHI experiment at the Large Electron-Positron Collider (LEP). He was involved in studies related to the Higgs boson and contributed to various physics analyses, including jet fragmentation functions and two-photon physics.[citation needed]

BABAR and CP violation

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In 1992, he joined the BABAR collaboration at SLAC National Accelerator Laboratory, associated with the PEP-II electron-positron collider. There, he played a pivotal role in the design and construction of the DIRC particle identification system.[citation needed] As a visiting scientist at Berkeley Lab from 1996 to 1998, he contributed to the simulation, reconstruction, and physics analysis software.[citation needed] From 1999 to 2001, he served as the Physics Analysis Coordinator for BABAR[5] during the observation of CP violation in the B-meson system, validating the theoretical predictions of Makoto Kobayashi and Toshihide Maskawa, who were awarded the 2008 Nobel Prize in Physics for their work.

CMS and Higgs boson discovery

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Hamel de Monchenault joined the Compact Muon Solenoid (CMS) experiment at CERN in 1995. He has held various leadership roles within CMS, including Deputy Physics Coordinator and Deputy Spokesperson. His contributions were instrumental in the discovery of the Higgs boson in 2012. He has also been involved in the design and operation of the muon detection system and has contributed to the electromagnetic calorimeter (ECAL).[citation needed]

Scientific publications

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Hamel de Monchenault has contributed to 2000 articles (June 2025) published in peer-reviewed journals.[6]

Leadership positions

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From 2016 to 2020, Hamel de Monchenault served as the head of the Particle Physics Department at CEA-Irfu.[citation needed]

In 2024, he was elected as the Spokesperson for the CMS collaboration, becoming the first scientist from CEA to lead one of the four major LHC experiments. His leadership coincides with the transition to the High Luminosity phase of the LHC, a period marked by significant upgrades to the detector and the continuation of pivotal physics analyses.[7]

Hamel de Monchenault will serve as CERN Director for Research and Computing for the period 2026–2030.[2]

Distinctions

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Gautier Hamel de Monchenault is the recipient of the Joliot-Curie Prize [fr] from the French Physical Society in 2005.[8]

References

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  1. ^ Portrait sur le site du CEA
  2. ^ a b "CERN management structure for 2026–2030, part 2". CERN. 2025-06-23. Retrieved 2025-06-23.
  3. ^ Ingénieurs de la de la 102ème promotion de l'EPSI
  4. ^ Hamel de Monchenault, Gautier. "Etude de la résolution de la TPC de DELPHI: Recherche du boson de Higgs du Modèle Standard Minimal dans l'expérience Delphi". inspirehep.net. Retrieved 2025-06-23.
  5. ^ Tiny Discovery May Answer a Question About the Big Bang dans The New York Times du 7 juillet 2001.
  6. ^ "Publications by Gautier Hamel de Monchenault as recorded by INSPIRE-HEP". inspirehep.net. Retrieved 2025-06-25.
  7. ^ "CMS Welcomes New Management for 2024-2026 | CMS Experiment". cms.cern. Retrieved 2025-06-23.
  8. ^ "Prix Joliot-Curie". Société Française de Physique (in French). 2025-04-15. Retrieved 2025-06-23.
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