Haiyan Gao

Haiyan Gao

Henry Newson Distinguished Professor of Physics

Professor of Physics

Professor of Physics at Duke Kunshan University (Secondary)

Office Location: 
Ffsc 2313, Science Drive, Durham, NC 27708
Front Office Address: 
Box 90308, Durham, NC 27708-0308
Phone: 
(919) 660-2622

Overview

Prof. Gao's research focuses on understanding the structure of the nucleon in terms of quark and gluon degrees of freedom of Quantum Chromodynamics (QCD), search for QCD exotics, and fundamental symmetry studies at low energy to search for new physics beyond the Standard Model of electroweak interactions. Most recently, her group's studies of the structure of the nucleon have been focusing on a precision measurement of the proton (see her group's 2019 Nature paper on this topic) and deuteron charge radii to elucidate on the proton and the deuteron charge radius puzzles, and on imaging the three-dimensional structure of the nucleon in momentum space through the extraction of transverse momentum dependent parton distribution functions (TMDs), employing polarized semi-inclusive deep inelastic scattering processes. The nucleon tomography provided by TMDs will uncover the rich QCD dynamics, and provide quantitative information about the quark orbital angular momentum contribution to the proton spin. TMDs will also provide information on fundamental quantities such as the tensor charge of the nucleon, a quantity not only important for testing lattice QCD predictions, but also important for searches of new physics beyond the Standard Model together with the next generation of nucleon electric dipole moment experiments. Her group is playing leading roles in the Solenoidal Large Intensity Device (SoLID) project at Jefferson Lab, a high profile program which will make major impact on TMD physics, proton mass puzzle through precision measurement of J/psi production near threshold, and search for new physics beyond the Standard Model using parity-violating deep inelastic scattering. Most of her work utilizes the novel experimental technique of scattering polarized electrons or photons from polarized gas targets. Her group has built a number of state-of-the-art polarized gas targets including H/D internal gas target and a high-pressure polarized 3He target for photon experiments using the High Intensity Gamma Source (HIGS) facility at the Duke Free Electron Laser Laboratory (DFELL). Her research is being carried out mostly at the Thomas Jefferson National Accelerator Facility (JLab) in Newport News, Virginia, and the HIGS facility at DFELL.

Education & Training

  • Ph.D., California Institute of Technology 1994

  • B.S., Tsinghua University (China) 1988

Zhao, Y. X., et al. “Double spin asymmetries of inclusive hadron electroproduction from a transversely polarized He 3 target.” Physical Review C  Nuclear Physics, vol. 92, no. 1, July 2015. Scopus, doi:10.1103/PhysRevC.92.015207. Full Text

Parno, D. S., et al. “Precision measurements of A1n in the deep inelastic regime.” Physics Letters, Section B: Nuclear, Elementary Particle and High Energy Physics, vol. 744, May 2015, pp. 309–14. Scopus, doi:10.1016/j.physletb.2015.03.067. Full Text

Akushevich, I., et al. “Radiative corrections beyond the ultra relativistic limit in unpolarized ep elastic and Møller scatterings for the PRad Experiment at Jefferson Laboratory.” European Physical Journal A, vol. 51, no. 1, Jan. 2015. Scopus, doi:10.1140/epja/i2015-15001-8. Full Text Open Access Copy

Mihovilovič, M., et al. “Measurement of double-polarization asymmetries in the quasielastic (3)He[→](e[→],e(')d) process.Physical Review Letters, vol. 113, no. 23, Dec. 2014, p. 232505. Epmc, doi:10.1103/physrevlett.113.232505. Full Text

Zhang, Y., et al. “Measurement of "pretzelosity" asymmetry of charged pion production in semi-inclusive deep inelastic scattering on a polarized He 3 target.” Physical Review C  Nuclear Physics, vol. 90, no. 5, Nov. 2014. Scopus, doi:10.1103/PhysRevC.90.055209. Full Text

Zhao, Y. X., et al. “Single spin asymmetries in charged kaon production from semi-inclusive deep inelastic scattering on a transversely polarized He 3 target.” Physical Review C  Nuclear Physics, vol. 90, no. 5, Nov. 2014. Scopus, doi:10.1103/PhysRevC.90.055201. Full Text

Posik, M., et al. “Precision measurement of the neutron twist-3 matrix element d(2)(n): probing color forces.Physical Review Letters, vol. 113, no. 2, July 2014, p. 022002. Epmc, doi:10.1103/physrevlett.113.022002. Full Text

Katich, J., et al. “Measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the reaction (3)He(↑)(e,e')X.Physical Review Letters, vol. 113, no. 2, July 2014, p. 022502. Epmc, doi:10.1103/physrevlett.113.022502. Full Text

Chu, P. H., et al. “Searches for possible T-odd and P-odd short range interactions using polarized nuclei.” Epj Web of Conferences, vol. 66, Apr. 2014. Scopus, doi:10.1051/epjconf/20146605003. Full Text

Allada, K., et al. “Single spin asymmetries of inclusive hadrons produced in electron scattering from a transversely polarized 3 He target.” Physical Review C  Nuclear Physics, vol. 89, no. 4, Apr. 2014. Scopus, doi:10.1103/PhysRevC.89.042201. Full Text

Pages

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