High Energy Physics Seminar: Dr. Yuncheng Han, University of New Mexico  Add To Calendar

  • Date(s): Tuesday, 11/18 1:30 PM to Tuesday, 11/18 2:30 PM
  • Speaker:
  • Host:
  • Campus Address: 2214 SES (Science and Engineering South)

Title: Study of Nuclear Physics With Strangeness

Abstract: Understanding of hadron-hadron interactions and searching for exotic quark states are important topics in contemporary nuclear physics. The interactions of hyperon-nucleon and hyperon-hyperon systems which include the strangeness flavor are important extensions of what we understand about the nucleon-nucleon interaction. This talk will give a report of hypernuclear spectroscopy experiments in Jefferson Lab (JLab), for strangeness S=-1 system, and a H-dibaryon searching experiment in Japan Proton Accelerator Complex (J-PARC), for S=-2 system.
Spectroscopic study of Λ-hypernuclei is a unique method to investigate baryonic sys- tems by converting a proton or neutron to a Λ inside of a nucleus, and also the only practical experimental method for study of Λ-N interaction. Recent Spectroscopic study at JLab Hall C with (e,e′K+) reaction will be introduced in this talk and the obtained new results of light and medium heavy Λ-hypernuclei will be presented.
The famed yet elusive H-dibaryon, an exotic quark state (uuddss), was predicted several decades ago and also supported by recently Lattice QCD calculations. The E42 experiment has been approved at J-PARC to search for the H-dibaryon with high statistics. A large acceptance hyperon spectrometer with a time projection chamber is used to search of the H-dibaryon from (K', K+) reaction via its possible decays such as ΛΛ. Recent status of the E42 experiment preparation will be presented.

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