Colloquia

Colloquium
Friday, December 6, 2019
3:30 PM
Physics Building, Room 204

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"Exploring the Nucleon Sea"


Jen-Chieh Peng , University of Illinois at Urbana-Champaign
[Host: Simonetta Liuti]
ABSTRACT:

Direct experimental evidence for point-like constituents in the nucleons
was first found in the electron deep inelastic scattering (DIS) experiment.
The discovery of the valence and sea quark structures in the nucleons
inspired the formulation of Quantum Chromodynamics (QCD) as the gauge field
theory governing the strong interaction. A surprisingly large asymmetry
between the up and down sea quark distributions in the nucleon was observed
in DIS and the so-called Drell-Yan experiments. In this talk, I discuss the
current status of our knowledge on the flavor structure of the nucleon sea.
I will also discuss the progress in identifying the "intrinsic" sea
components in the nucleons. Future prospect for detecting some novel
sea-quark distributions will also be presented.

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