[Deeppwg] CEU DNP Poster abstract submission

[Fatiha Benmokhtar]

Dear all,
 I would like to submit this abstract for my student Hannah Valenty to
present a CEU poster at DNP 2023. Please let me know if you have any
suggestions.

Best regards,
Fatiha

Title: Studies of the Proton target and current fragmentations in the Deep
Inelastic Regime.
Author:  Hannah Valenty
Duquesne University

Studies of the properties and the azimuthal distribution of hadrons
produced in the Target Fragmentation Region serve as a test of our
complete understanding of the different mechanisms in the SIDIS production
of hadrons and provide additional information on the QCD dynamics that are
not accessible with single hadron production in the Current Fragmentation
Region. We present studies of beam SSA for semi-inclusive protons (ep
→ e′p'+X), produced in the TFR, that can be related to higher
twist Fracture Functions describing the F_LU structure function. Such
measurements were performed with the CLAS12 detector in Hall B at
Jefferson lab using a longitudinally polarized 10.6~GeV electron beam on
an unpolarized hydrogen target. Preliminary results of this study captured
the transition between the TFR and CFR regions showing a clear sign change
of the SSA for protons produced in the backward region in CM, dominated by
TFR protons providing a criteria for experimental separation of CFR and
TFR regions. These findings are opening a new avenue for the study of the
nucleon structure.




-- 
Fatiha Benmokhtar, PhD
Associate Professor
Office: 306 Fisher Hall
Tel: 412-396-6353
Duquesne University, Pittsburgh, PA