Or Hen, Assistant Professor of Physics

Assistant Professor of Physics

EMAIL: hen@mit.edu

PHONE: (617) 258-0541

OFFICE: 26-419 (Office) 26-445 (Lab)



Area of Physics:

Experimental Nuclear & Particle Physics

Research Interests

Professor Hen’s research focuses on studies of QCD effects in the nuclear medium, and the interplay between partonic and nucleonic degrees of freedom in nuclei. Specifically, Hen uses high-energy electron, neutrino, photon, and proton scattering off atomic nuclei to study Short-Range Correlations (SRCs): Temporal fluctuations of high-density, high-momentum, nucleon clusters in nuclei. These pairs account for almost all high-momentum (k>k_F) nucleon in nuclei, constitute 20-25% of the nuclear wave-function, and are a leading candidate for non-nucleonic configurations in nuclei.

Hen and collaborators conducted experiments at the US based Thomas-Jefferson and Fermi National Accelerator Laboratories, as well as other accelerators around the world, where they study the structure and characteristics of SRC pairs and examined their effect on various topics in nuclear, particle, atomic and astrophysics. For example, in a recent series of publications Hen and collaborators have shown that SRCs in atomic nuclei are predominantly neutron-proton pairs and demonstrated its significant implications to quark distributions in nuclei (the "EMC effect"); the free (un-bound) neutron structure; generalization of effective theories for two-component Fermi-gases to atomic nuclei, the nuclear symmetry energy and neutron stars structure; and more.

Biographical Sketch

Or Hen grew up in Moshav Even-Sapir, in the countryside of Jerusalem, Israel. He received his undergraduate degree in physics and computer engineering from the Hebrew University and earned his PhD in experimental physics at Tel-Aviv University. Before joining the MIT physics faculty in July 2017, Hen was an MIT Pappalardo Fellow in Physics from 2015-2017.

Hen has received various prizes and fellowships for his work to date, including the Fermi Lab Intensity-Frontier fellowship, Rothschild Fellowship, Jefferson Science Association and Israeli Physics Society thesis prizes, A. Pazi Award of the Israeli Council for Higher Education and the Y. Eisenberg Prize of Tel-Aviv University.

Selected Publications

See full list from Spires here.

  • O. Hen et al. (CLAS Collaboration), “Momentum Sharing in Imbalanced Fermi Systems”, Science 346, 614 (2014).
  • I. Korover, N. Muangma, and O. Hen et al. (Hall-A Collaboration), “Approaching the nucleon-nucleon short-range repulsive core via the 4He(e,e'pN) triple coincidence reaction”, Phys. Rev. Lett. 113, 022501 (2014).
  • O. Hen et al., “Symmetry Energy of Nucleonic Matter with Tensor Correlations”, Phys. Rev. C, In-Print (2014).
  • O. Hen et al., “New data strengthen the connection between Short Range Correlations and the EMC effect”, Phys. Rev. C 85, 047301 (2012).
  • O. Hen et al., “The EMC Effect and High Momentum Nucleons in Nuclei”, Int. J. Mod. Phys. E 22, 133007 (2013).
  • L.B. Weinstein, E. Piasetzky, D.W. Higinbotham, J. Gomez, O. Hen, and R. Shneor, “Short-Range Correlations and the EMC Eefect”, Phys. Rev. Lett. 106, 052301 (2011).
  • O. Hen et al., “Constraints on the large-x d/u ratio from electron-nucleus scattering at x->1”, Phys. Rev. D 84, 117501 (2011).
  • O. Hen et al, “Correlated Fermion Pairs in Nuclei and Ultracold Atomic Gases”, arXiv: 1407.8175 (2014).
  • O. Hen et al. (CLAS Collaboration), “Measurement of Transparency Ratios for Protons from Short-Range Correlated Pairs”, Phys. Lett. B 772, 63 (2013).

Last updated on August 24, 2017 4:00 PM