Colloquium: Discovery of the Higgs boson at the LHC (Haijun Yang, SJTU, Sep.12, 2012)

Release date:2012-09-07 Page views:938

Colloquium 91

Title: Discovery of the Higgs boson at the LHC

Speaker: Haijun Yang (INPAC), Shanghai Jiao Tong University

Location: Room 111, Physics Building

Time: 3:00pm, 12-09-2012, Wednesday


The Standard Model of electroweak and strong interactions is in excellent agreement with the numerous experimental measurements, but the dynamics responsible for electroweak symmetry breaking are still unknown. The Higgs mechanism was proposed by Peter Higgs etc. to explain the breaking of electroweak symmetry in 1964, and elementary particles acquire mass by interacting with the Higgs field. The Higgs boson was predicted to exist from theory since then, but has not been discovered in experiment until July, 2012. The Higgs boson is the last missing cornerstone of the Standard Model. The talk will focus on how we search and discover the Higgs boson at the Large Hadron Collider (LHC) at CERN.



Professor Yang received his Ph.D. in Particle and Nuclear Physics in 2000 from Institute of High Energy Physics (IHEP, Beijing), through joint Ph.D. program with Swiss Federal Institute of Technology (ETH, Zurich). Since 2000, he was appointed as a Research Fellow position in Physics Department at the University of Michigan, Ann Arbor. He was promoted to a Research Faculty position in 2005 and held this position until 2012, when he was appointed as a Professor of Physics at Shanghai Jiao Tong University (SJTU). 

He was selected as a member of  “Shanghai 1000-Talent” and “National Youth 1000-Talent” programs. He is a member of American Physical Society (APS) since 2001. He was a member ofCERN/LEP/L3 experiment (1997-2005) and Fermilab/MiniBooNE experiment (2003-2009, Principal Investigator of the U. Michigan group), currently is a member of ATLAS experiment at the Large Hadron Collider (LHC) at CERN (2005-).

He serves as the ATLAS SM group production contact person and made significant contributions to the discovery of the Higgs boson through the “golden-plate” channel HàZZà4l. He is a pioneer to develop and apply an advanced data mining technique Boosted Decision Trees (BDT) for particle identification and event pattern recognition since 2003, it has wide applications in particle physics include the discoveries of the Higgs bosons at CERN and the single top quark at Fermilab. His work on electron neutrino oscillation search using BDT with the MiniBooNE collaborators (PhysRevLett.98.231801) was selected as one of the top-10 physics stories by American Institute of Physics (AIP) in 2007.


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