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Jun 17 – 21, 2024
Hilton Hotel York
Europe/London timezone

Inclusive electron scattering off the proton in the resonance region with CLAS12 at Jefferson Lab (20+5)

Jun 19, 2024, 2:00 PM
25m
Minster Suite (Hilton Hotel York)

Minster Suite

Hilton Hotel York

Speaker

Prof. Kyungseon Joo (University of Connecticut)

Description

Inclusive electron scattering cross sections from a hydrogen target at a beam energy of 10.6~GeV have been measured with data
collected from the CLAS12 spectrometer at Jefferson Laboratory. These data cover a wide kinematic area in invariant mass W of the
final state hadrons from the meson threshold up to 2.5~GeV and in virtual photon four-momentum squared Q2 from 1 to 10~GeV2.
Owing to the nearly 4π acceptance of the CLAS12 detector, the data cover a broad W-range in each Q2 bin. For the first time,
the inclusive electron scattering cross sections in the resonance region have become available for Q2 up to 10~GeV2 with a broad
W-coverage in each bin of Q2. Comparison with the resonant contributions computed from the CLAS results on the Q2-evolution of
the nucleon resonance electroexcitation amplitudes has demonstrated a promising opportunity to extend the information on their
Q2-evolution up to 10~GeV2. Together these results from CLAS and CLAS12 offer the prospect for insight into the nucleon parton
distributions at large fractional parton momenta x for W<2.5~GeV, covering the range of distances where the transition from
the strongly coupled to pQCD regimes is expected. In this talk, I will discuss the current status of the analysis and the future plan.

Primary author

Prof. Kyungseon Joo (University of Connecticut)

Presentation materials