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Haijun Yang 

Title: Professor
Email: haijun.yang@sjtu.edu.cn
Phone: +86-21-3420-2605
Address: Room 411B, INPAC Building, 800 Dongchuan Road, Shanghai, 200240
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Area of Physics: Particle Physics, Collider Physics
 
Research Interests:
 
1. Collider Physics (LHC/ATLAS, BEPCII/BESIII, CEPC)
2. Higgs and Electroweak Physics
3. Beyond Standard Model Physics 
 
Biographical Sketch:
 
Professor Yang received his Ph.D. in Particle and Nuclear Physics in 2000 from Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS) through joint Ph.D. program with Swiss Federal Institute of Technology (ETH, Zurich). He performed his Ph.D thesis research in the L3 experiment on the Large Electron Positron Collider (LEP) at European Organization for Nuclear Research (CERN), Geneva, Switzerland. Since 2000, he was appointed as a Research Fellow position in Physics Department at the University of Michigan (UM), 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).
 
Prof. Yang 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. Professor Yang was a member of CERN/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 is the ATLAS group production contact person (2009-2013) and group leader of the SJTU-ATLAS research team (2012-).Starting from 2013, Prof. Yang serves as associate director of the Institute of Nuclear and Particle Physics (INPAC), and a steering committee of Circular Electron Positron Collider – Super Proton Proton Collider (CEPC-SPPC). He serves as deputy institutional representative of ATLAS USTC-SDU-SJTU cluster since 2016. He is a co-PI of CEPC detector R&D project funded by the MOST (2016-2021). He organized and co-chaired several international conferences at SJTU including SPCS2013, CEPC2014, BESIII2015, LHCP2017.
 
Prof. Yang is an expert on physics analysis and data processing at the collider experiments. He is a key member of the ATLAS collaboration who discovered the existence of the elusive Higgs boson on July 4, 2012, it is a cornerstone of particle physics and provides explanations for the origin of the symmetry-breaking mechanism by which elementary particles acquire mass. He is a pioneer to develop and apply an advanced multivariate technique Boosted Decision Trees (BDT) for particle identification and event pattern recognition since 2004. BDT is chosen as one of the standard tools by CERN TMVA package and 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.
 

Selected Publications:  

  1. ATLAS Collaboration (M. Aaboud et.al.), "Search for new phenomena in different-flavour high-mass dilepton final states in pp collisions at sqrt(s)=13 TeV with the ATLAS detector", arXiv:1607.08079,Euro. Phys. J. C76 (2016)541
  2. 2. ATLAS+CMS (G. Aad et.al.), "Combined Measurement of the Higgs Boson Mass in pp Collisions at 7 and 8 TeV with the ATLAS and CMS Experiments Phys. Rev. Lett. 114, 191803 (2015)
  3. ATLAS Collaboration (G. Aad et al.), "Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector", Euro. Phys. J. C75 (2015)476
  4.  ATLAS Collaboration (G. Aad et al.), "Measurement of Four-Lepton Production at the Z Resonance in pp Collisions at CME=7 and 8 TeV with ATLAS", Phys. Rev. Let. 112, 231806 (2014)
  5. ATLAS Collaboration (G. Aad et al.), "Measurements of Higgs boson production and couplings in the four-lepton channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector",arXiv:1408.5191, Phys. Rev. D 91, 012006 (2015)
  6. ATLAS Collaboration (G. Aad et al.), "Measurement of the Higgs boson mass from the H->gammagamma and H->ZZ*->4l channels with the ATLAS detector using 25 fb-1 of pp collision data", Phys. Rev. D. 90, 052004 (2014)
  7.  Haijun Yang (on behalf of the ATLAS Collaboration), "Higgs Properties Measurement with the ATLAS Detector at the LHC", EPJ Web of Conferences 49, 12014 (2013)
  8.  ATLAS Collaboration (G. Aad et al.), "Evidence for the spin-0 nature of the Higgs boson using ATLAS data", arXiv:1307.1432, Phys. Lett. B726 (2013) 120-144
  9. ATLAS Collaboration (G. Aad et al.), "Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC" arXiv:1307.1427, Phys. Lett. B726 (2013) 88-119
  10.  ATLAS Collaboration (G. Aad et al.), "A Particle Consistent with the Higgs Boson Observed with the ATLAS Detector at the Large Hadron Collider", Science 21 December 2012: vol. 338 no. 6114 pp. 1576-1582, DOI: 10.1126/science.1232005
  11. ATLAS Collaboration (G. Aad et al.), "Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC", arXiv:1207.7214, Phys. Lett. B 716(2012) 1-29
  12. ATLAS Collaboration (G. Aad et al.), "Measurement of W+W- production in pp collisions at 7 TeV with the ATLAS detector and limits on anomalous WWZ and WW couplings", arXiv:1210.2979, Phys. Rev. D 87, 112001 (2013)
  13. ATLAS Collaboration (G. Aad et al.), "Search for the Standard Model Higgs boson in the decay channel H->ZZ(*)->4l with 4.8 fb-1 of pp collision data at sqrt(s) = 7 TeV with ATLAS", arXiv:1202.1415,Phys.Lett. B710 (2012) 383-402
  14. ATLAS Collaboration (G. Aad et al.), "Measurement of the WW cross section in 7 TeV pp collision with the ATLAS detector and limits on anomalous triple gauge couplings",(arXiv:1203.6232), Phys.Lett. B712 (2012) 289-308
  15. ATLAS Collaboration (G. Aad et al.), "Measurement of the WZ production cross section and limits on anomalous triple gauge couplings in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector" (arXiv:1111.5570), Phys. Lett. B709 (2012) 341-357
  16.  ATLAS Collaboration (G. Aad et al.), "Measurement of the ZZ production cross section and limits on anomalous neutral triple gauge couplings in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector" (arXiv:1110.5016), Phys. Rev. Lett. 108, 041804 (2012)
  17.  ATLAS Collaboration (G. Aad et al.), "Measurement of the WW cross section in sqrt(s) = 7 TeV pp collisions with ATLAS" (arXiv:1104.5225), Phys. Rev. Lett. 107, 041802 (2011)
  18.  ATLAS Collaboration (G. Aad et al.), " Measurement of the W -> lnu and Z/gamma* -> ll production cross sections in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector" JHEP 12 (2010) 060 (2010)
  19.  ATLAS Collaboration (G. Aad et al.) " Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics", CERN-OPEN-2008-020 (2009), 1852pp
  20.  ATLAS Collaboration (G. Aad et al.) " The ATLAS Experiment at the CERN Large Hadron Collider", JINST 3:S08003 (2008), 437pp
  21. Hai-Jun Yang(* corresponding author), Tiesheng Dai, Alan Wilson, Zhengguo Zhao, Bing Zhou " A Multivariate Training Technique with Event Reweighting", JINST 3 P04004 (2008)
  22. MiniBooNE Collaboration, A.A. Aguilar-Arevalo et.al., " Unexplained Excess of Electron-Like Events From a 1 GeV Neutrino Beam", Phys. Rev. Lett. 102, 101802 (2009)
  23. MiniBooNE Collaboration, A.A. Aguilar-Arevalo et.al., " Measurement of Muon Neutrino Quasi-Elastic Scattering on Carbon", Phys. Rev. Lett. 100, 032301 (2008)
  24. MiniBooNE Collaboration, A.A. Aguilar-Arevalo et.al., " A Search for Electron Neutrino Appearance at the dm^2 ~ 1 eV^2 Scale", Phys. Rev. Lett. 98, 231801 (2007)
  25. Hai-Jun Yang(* corresponding author), Byron P. Roe, Ji Zhu(U. Michigan), " Studies of Stability and Robustness for Artificial Neural Networks and Boosted Decision Trees ", Nucl. Instrum. & Meth. A 574 (2007) 342-349
  26. Hai-Jun Yang(* corresponding author), Sven Nyberg, Keith Riles(U. Michigan), " High-precision Absolute Distance Measurement using Dual-Laser Frequency Scanned Interferometry Under Realistic Conditions ",Nucl. Instrum. & Meth. A575 (2007) 395-401
  27. Hai-Jun Yang(* corresponding author), Byron P. Roe, Ji Zhu(U. Michigan), " Studies of boosted decision trees for MiniBooNE particle identification", Nucl. Instrum. & Meth. A 555 (2005) 370-385
  28. Hai-Jun Yang(* corresponding author),Jason Deibel, Sven Nyberg, Keith Riles(U. Michigan), " High-precision absolute distance and vibration measurement using frequency scanned interferometry", Applied Optics, Vol.44 (2005) 3937-3944
  29. Byron P. Roe, Hai-Jun Yang(* corresponding author),Ji Zhu(U. Michigan), Yong Liu, Ion Stancu(U. Alabama), Gordon McGregor(Los Alamos National Lab), " Boosted decision trees as an alternative to artificial neural networks for particle identification", Nucl. Instrum. & Meth. A 543 (2005) 577-584
  30. LEP Higgs Working Group," Search for the Standard Model Higgs Boson at LEP", Phys. Lett. B565 (2003) 61-75
  31. L3 Collaboration, "Search for neutral Higgs bosons of the minimal supersymmetric standard model in e+e- interactions at \sqrt(s) up to 209 GeV", Phys. Lett. B545 (2002) 30-42
  32.  L3 Collaboration, " Higgs Candidates in E+ E- Interactions at S**(1/2) = 206.6-GeV", Phys.Lett. B495 (2000) 18-25
  33. L3 Collaboration, "Measurement of the topological branching fractions of the tau lepton at LEP", Phys. Lett. B519 (2001) 189-198
  34. L3 Collaboration, "Production of single W bosons at \sqrt(s)=189 GeV and measurement of WW\gamma gauge couplings", Phys. Lett. B487 (2000) 229-240