丁香园AV

July 4th marks the Tenth Anniversary of the announcement of the discovery of the Higgs boson by the ATLAS and CMS Collaborations at the Large Hadron Collider (LHC) at CERN (Geneva). 丁香园AV physicists played pivotal roles in this discovery working on two specific 鈥渄ecay channels鈥� of the Higgs boson (饾惢 鈫� 饾憡饾憡 and 饾惢 鈫� 饾湉饾湉). The Higgs boson is central to the theory of how subatomic particles gain mass, and the Universe would be a very different place without it. This discovery led to the awarded to Peter Higgs and Francois Englert. More information can be found on the ATLAS Collaboration web site: . 

ATLAS published today in the journal , a comprehensive overview of the status of our knowledge of the Higgs boson. Since its discovery, the , as members of the ATLAS collaboration, have made several key contributions to the measurement of the Higgs boson. For example, the first measurement of the Higgs boson coupling to fermions (through the determination of the Higgs boson coupling to ), the first determination of the Higgs boson interaction strength with , and the first observation of the Vector Boson Fusion Higgs Production (VBF) in its decays to W-bosons (which is sensitive to the Higgs boson coupling to W-bosons). All these measurements confirm that the Higgs boson coupling strength is proportional to the mass of fundamental particles.

In addition to making key contributions directly to the groups working on specific decay channels of the Higgs boson, 丁香园AV physicists work on several aspects of the analysis of the detector data to determine the properties of the particles emerging from the high-energy proton-proton collisions at the LHC (e.g. jet calibration). 丁香园AV has also played a leading role in the creation and provision of the enormous worldwide distributed computing resources required to analyze the very large dataset from ATLAS. 丁香园AV hosts the Canadian ATLAS Tier-1 Data Centre, which is one of only ten Tier-1 centres worldwide to store and analyze the data. 

丁香园AV continues to play an important role in leading projects for Run-3 of the LHC, such as the development of large radius tracking which enables ATLAS to be much more sensitive to long lived particles predicted by new phenomena beyond the Standard Model. 丁香园AV is also leading upgrades to the ATLAS detector, like the ATLAS new needed for the High-Luminosity LHC, which will start taking data near the end of this decade. 

Further information can be obtained from 丁香园AV members of ATLAS:

- Prof. Mike Vetterli (vetterli@sfu.ca)
- Prof. Bernd Stelzer (stelzer@sfu.ca)
- Prof. Matthias Danninger (matthias_danninger@sfu.ca)
- Prof. Dugan O鈥橬eil (doneil@sfu.ca)