Title: Unraveling the secrets of matter with the CMS experiment

Speaker: Gautier Hamel de Monchenault

Time: 10:00, May 29（Thursday）

Location: Room 215, No. 8 Hainayuan Building

Abstract:

The Compact Muon Solenoid (CMS) experiment is one of the two major experiments at the Large Hadron Collider (LHC) designed to study the fundamental interactions in high energy proton-proton collisions. The LHC and its associated experiments are part of a decades-long journey that culminated in 2012 with the discovery of the Higgs boson. This discovery, which led to the 2013 Nobel Prize in Physics, takes us back in time to the origin of matter, a tiny fraction of a second after the big bang. Over the years, the LHC has grown in power and CMS has considerably improved its physics potential, becoming a marvel that combines cutting-edge detection technologies with the most sophisticated analysis techniques. This colloquium will evoke some of the deep questions particle physics seeks to answer, will present key CMS physics measurements obtained during recent LHC data-taking periods, and will briefly describe the CMS detector upgrade programme for the high-luminosity phase of the LHC (HL-LHC).

Biography:

Gautier Hamel de Monchenault is a Director of research at the Commissariat à l'énergie atomique (CEA) in Saclay, near Paris, as part of the Université Paris-Saclay. He specialises in particle physics. He was elected spokesman of the CMS (Compact Muon Solenoid) experiment at the Large Hadron Collider (LHC) at CERN, the European Laboratory for Particle Physics, near Geneva. Previously, he was head of the Particle Physics Department at CEA. In 2001, he was scientific coordinator of the BABAR experiment at the Stanford Linear Accelerator Center (SLAC, California), which observed the phenomenon of matter-antimatter asymmetry (CP violation) in beauty quark decays, a discovery that was the experimental verification of a theoretical prediction awarded the 2008 Nobel Prize in Physics.