Faculty
Faculty
Haijun Yang Professor
  • Institute of Nuclear and Particle Physics
  • Particle Physics, Collider Physics
  • 021-34202605
  • Room 625, No. 5 Science Building
  • haijun.yang@sjtu.edu.cn

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, 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).

Professor Yang was a member of CERN/LEP/L3 experiment (1997-2005) and Fermilab/MiniBooNE experiment (2003-2009, currently is a member of ATLAS experiment at the Large Hadron Collider (LHC) at CERN (2005-). He served as institutional representative of ATLAS USTC-SDU-SJTU cluster between 2016-2020. Now he serves as deputy Project Director of Circular Electron Positron Collider (CEPC). He organized and co-chaired several international conferences at SJTU including SPCS2013, CEPC2014, BESIII2015, LHCP2017, CALICE2018, CHEP2018, FCPPL2019, CEPC2020, CLHCP2023.

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. 


Research Interests:

1. Collider Physics (LHC/ATLAS, CEPC, DarkSHINE)

2. Higgs, electroweak and beyond Standard Model Physics 

3. Dark matter, dark photon




  1. ATLAS Collab., “A detailed picture of its interactions by the ATLAS experiment ten years after the discovery”, Nature 607 (2022) 52-59 (Cover Story)

  2. ATLAS Collab., “Observation of electroweak production of two jets and a Z-boson pair with the ATLAS detector at the LHC”, Nature Physics 19 (2023) 237-253

  3. DarkSHINE Collaboration, "Prospective Study of Light Dark Matter Search with a Newly Proposed DarkSHINE Experiment", Science China - Phys. Mech. Astron. 66, (2023) 211062

  4. BESIII Collab., “Oscillating Features in the Electromagnetic Structure of the Neutron”, Nature Physics 17 (2021) 1200-1204 (cover story)       

  5. ATLAS Collab., "Search for Higgs boson pair production in the two bottom quarks plus two photons final state in pp collisions at 13 TeV with the ATLAS detector", PRD 106 (2022) 052001

  6. CALICE Collab., “Energy reconstruction of hadronic showers at the CERN PS and SPS using the Semi-Digital Hadronic Calorimeter”,  JINST 17 (2022) P07017

  7.        Y. Duan, S. Li*, H. Yang* et.al., “Scintillator Tile Batch Test of CEPC AHCAL”, JINST 17 (2022) P05006

  8. ATLAS Collab., “Search for heavy resonances decaying into a pair of Z bosons in the 4l and 2l2v final states using 139/fb of pp collisions at 13 TeV with the ATLAS detector”, EPJ C81(2021) 332

  9. L. Mao, J. Guo*, H. Yang et.al., “Performance study of large-area glass resistive plate chambers with different spacer configurations”, JINST 16 (2021) P12022

  10. ATLAS Collab., “Combined measurements of Higgs boson production and decay using up to 80/fb of pp collision data at 13 TeV with the ATLAS experiment”, Phys. Rev. D 101 (2020) 012002

  11. CALICE Collab. (B. Liu*, H. Yang et.al.,), “Particle Identification using Boosted Decision Trees in the Semi-Digital Hadronic Calorimeter Prototype”, JINST 15, P10009 (2020)

  12. B. Liu*, H. Yang et.al., “Energy reconstruction for a hadronic calorimeter using multivariate data analysis methods”, JINST 14, P10034 (2019)

  13. ATLAS Collab., “Observation of electroweak production of a same-sign W boson pair in association with two jets in pp collisions at 13 TeV with the ATLAS detector”, Phys. Rev. Lett. 123 (2019) 161801

  14. CEPC Working Group, “Precision Higgs Physics at CEPC”, Chin. Phys. C43, 4 (2019) 043002

  15. ATLAS Collab., "Measurement of the Higgs boson coupling properties in the H->ZZ->4l decay channel at 13 TeV with the ATLAS detector", JHEP 03 (2018) 095

  16. ATLAS Collab., "Measurements of Higgs boson properties in the diphoton decay channel with 36/fb of pp collision data at 13 = TeV with the ATLAS detector", Phys. Rev. D 98, 052005 (2018)

  17. ATLAS Collab., "Search for heavy ZZ resonances in the llll and llvv final states using proton proton collisions at 13 TeV with the ATLAS detector", Eur. Phys. J. C78 (2018) 293

  18. ATLAS Collab., Search for lepton-flavor violation in different-flavor, high-mass final states in pp collisions at 13 TeV with the ATLAS detector, Phys. Rev. D 98 (2018) 092008

  19. ATLAS Collab., Measurement of inclusive and differential cross sections in the H->ZZ*->4l decay channel in pp collisions at 13 TeV with the ATLAS detector, JHEP 10 (2017)132

  20. ATLAS Collab., Search for new phenomena in different-flavour high-mass dilepton final states in pp collisions at 13 TeV with the ATLAS detector, Euro. Phys. J. C76 (2016) 541

  21. ATLAS Collab., Search for resonances in diphoton events at 13 TeV with the ATLAS detector, JHEP 1609 (2016)001

  22. ATLAS+CMS Collab., 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 (2015) 191803 (cover story)

  23. ATLAS Collab., Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector, Euro. Phys. J C75 (2015)10, 476

  24. ATLAS Collab., Measurement of Higgs boson production and couplings in the four-lepton channel in pp collisions at 7 and 8 TeV with the ATLAS detector, Phys. Rev. D91, 012006 (2015)

  25. ATLAS Collab., 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)

  26. ATLAS Collab., Measurement of the Higgs boson mass from the H->gg and H->ZZ*->4l channels with the ATLAS detector using 25 fb.1 of pp collision data, Phys. Rev. D. 90, 052004 (2014)

  27. ATLAS Collab., Evidence for the spin-0 nature of the Higgs boson using ATLAS data, Phys. Lett. B 726 (2013) 120-144

  28. ATLAS Collab., Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC, Phys. Lett. B 726 (2013) 88-119

  29. ATLAS Collab., Measurement of W+W- production in pp collisions at 7 TeV with the ATLAS detector and limits on anomalous WWZ and WWg couplings, Phys. Rev. D 87, 112001 (2013)

  30. ATLAS Collab., A Particle Consistent with the Higgs Boson Observed with the ATLAS Detector at the Large Hadron Collider, Science 338, (2012) 1576-1582 (cover story)

  31. ATLAS Collab., Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC,  Phys. Lett. B 716 (2012) 1-29

  32. ATLAS Collab., Search for the Standard Model Higgs boson in the decay channel H->ZZ(*)->4l with 4.8 fb-1 of pp collisions at √s =7 TeV with ATLAS,  Phys. Lett. B 710 (2012) 383-402

  33. ATLAS Collab., Measurement of the ZZ production cross section and limits on anomalous neutral triple gauge couplings in proton-proton collisions at √s =7 TeV with the ATLAS detector, Phys. Rev. Lett. 108 (2012) 041804

  34. ATLAS Collab., Measurement of the WZ Production Cross Section and Limits on Anomalous Triple Gauge Couplings in Proton-Proton Collisions at √s =7 TeV with the ATLAS Detector,  Phys. Lett. B709 (2012) 341-357

  35. ATLAS Collab., Measurement of the WW production cross section in proton-proton collisions at √s = 7 TeV with the ATLAS detector,  Phys. Rev. Lett. 107 (2011) 041802

  36. ATLAS Collab., Measurement of the W and Z production cross sections in proton-proton collisions at √s = 7 TeV with the ATLAS detector, JHEP 12 (2010) 060

  37. ATLAS Collab., The ATLAS Experiment at the CERN Large Hadron Collider, JINST 3:S08003 (2008)

  38. MiniBooNE Collab., Unexplained Excess of Electron-Like Events From a 1 GeV Neutrino Beam, Phys. Rev. Lett. 102, 101802 (2009)

  39. MiniBooNE Collab., A Search for muon neutrino and antineutrino disappearance in MiniBooNE, Phys. Rev. Lett. 103, 061802 (2009)

  40. MiniBooNE Collab., Measurement of Muon Neutrino Quasi-Elastic Scattering on Carbon, Phys. Rev. Lett. 100, 032301 (2008)

  41. MiniBooNE Collab., First Observation of Coherent p0 Production in Neutrino Nucleus Interactions with En<2GeV,  Phys. Lett. B664:41-46 (2008)

  42. MiniBooNE Collab., A.A. Aguilar-Arevalo et.al., A Search for Electron Neutrino Appearance at the Dm2 ~ 1 eV2 Scale, Phys. Rev. Lett. 98, 231801 (2007)

  43. H. Yang(*), T. Dai, A. Wilson, Z. Zhao, B. Zhou, A Multivariate Training Technique with Event Reweighting, JINST 3: P04004 (2008)

  44. H. Yang(*), B.P. Roe, J. Zhu, Studies of Stability and Robustness for Artificial Neural Networks and Boosted Decision Trees, Nucl. Instrum. & Meth. A 574 (2007) 342-349

  45. H. Yang(*), B.P. Roe, J. Zhu, Studies of boosted decision trees for MiniBooNE particle identification, Nucl. Instrum. & Meth. A 555 (2005) 370-385

  46. B.P. Roe, H. Yang(*), J. Zhu et.al., Boosted decision trees as an alternative to artificial neural networks or particle identification, Nucl. Instrum. & Meth. A 543 (2005) 577-584

  47. H. Yang(*), et.al., High-precision Absolute Distance Measurement using Dual-laser Frequency Scanned Interferometry Under Realistic Conditions, Nucl. Instrum. & Meth. A575 (2007) 395-401

  48. H. Yang(*), J. Deibel, S. Nyberg, K. Riles, High precision absolute distance and vibration measurement using frequency scanned interferometry, Applied Optics, Vol.44 (2005) 3937-3944

  49. LEP Collab., Search for the Standard Model Higgs Boson at LEP, Phys. Lett. B 565 (2003) 61-75

  50. L3 Collab., Search for neutral Higgs bosons of the minimal supersymmetric standard model in e+e- interactions at √s up to 209 GeV, Phys. Lett. B545 (2002) 30-42

  51. L3 Collab., Higgs Candidates in e+e- Interactions at √s = 206.6 GeV, Phys. Lett. B 495 (2000) 18-25

  52. L3 Collab., Measurement of the topological branching fractions of the tau lepton at LEP, Phys. Lett. B 519 (2001) 189-198

  53. L3 Collab., Production of single W bosons at √s=189 GeV and measurement of WWg gauge couplings, Phys. Lett. B 487 (2000) 229-240


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