[Jlab-seminars] Physics Seminar: Nathan Harrison; "Exploring the Structure of the Proton via Semi-inclusive Pion Electroproduction"

[Stephanie Tysor]

*Physics Seminar*

*Nathan Harrison*

University of Connecticut, Storrs, CT

**

/"Exploring the Structure of the Proton via Semi-inclusive Pion 
Electroproduction"/

Abstract//


Measurements of the $\cos\phi$ and $\cos2\phi$ moments of the 
semi-inclusive deep inelastic scattering (SIDIS) cross-section were 
performed. The data set used was the E1-f run from the CEBAF Large 
Acceptance Spectrometer (CLAS) at Jefferson Lab which ran in 2003. The 
run used a 5.498 GeV longitudinally polarized electron beam and an 
unpolarized liquid hydrogen target. Two pion channels ($\pi^+$ and 
$\pi^-$) were studied over a broad kinematical range ($x$ = 0.1 - 0.6, 
$Q^2$ = 1.0 - 4.5 $\text{GeV}^2$, $z$ = 0.0 - 1.0, and $P_{h\perp}^2$ = 
0.0 - 1.0 $\text{GeV}^2$). These measurements give insights into the 
transverse momentum dependence of parton distribution functions (PDFs) 
which describe the dynamics of quarks and gluons inside of the proton. 
This may give access to the quark orbital angular momentum contribution 
to the proton spin.

*Tuesday, November 3, 2015*

*2:30pm*

*CEBAF Center Conference Room L102*

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