[Theory-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Friday, Feb. 17, 2017
CEBAF Center, Room F113
2:00-3:00 p.m. (coffee at 1:45 p.m.)

Daniel Pitonyak
Penn State University Berks

*Understanding the Structure of Hadrons Through Spin Observables
in Hard-Scattering Processes*

Almost all of the visible matter in the universe is built from hadrons 
which are composed
of quarks and gluons. One of the main challenges in nuclear physics is 
to understand this
complex internal structure. In this talk, I will discuss how high-energy 
collisions that involve
the spin of hadrons give us insight into aspects of their inner-workings 
that otherwise would
be inaccessible. Within the context of the JLab12 program and future 
Electron-Ion Collider,
I will focus on phenomena that arise when hadrons carry spin transverse 
to their direction
of motion, which allow us to examine them in 3D and analyze correlations 
between their quarks
and gluons. I will also discuss a new way the so-called “spin crisis” of 
how the proton gets its
spin might get resolved and its implication for future fits of helicity 
PDFs.

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