TL;DR
This paper discusses the hadron spectroscopy research conducted with the CLAS12 detector at Jefferson Lab, focusing on baryon and meson resonances, and highlights the extended capabilities enabled by the 12 GeV upgrade.
Contribution
It presents the CLAS12 detector and the physics program for 12 GeV, emphasizing new opportunities in baryon and meson spectroscopy at higher energies.
Findings
Extended the range of hadron resonance studies with 12 GeV beams.
Enhanced understanding of baryon and meson spectra and transition form-factors.
Prepared for discovery of exotic and missing states.
Abstract
Hadron spectroscopy has been an essential part of the physics program with the CLAS detector in experimental Hall B at Jefferson Lab. Production of baryon and meson resonances with high energy (polarized) electron and photon beams was studied on a veriety of targets, ranging from hydrogen to lead. Physics topics of interest include: investigation of the spectrum of baryon and meson resonances, transition form-factors, meson-nucleon couplings (mesons in nuclei), and search for exotic and missing states. With the 12 GeV upgrade of the CEBAF machine, hadron spectroscopy in Hall B will be extended to a new domain of higher mass resonances and the range of higher transferred momentum using up to 11 GeV electron beams and the upgraded CLAS12 detector. In this paper a brief description of the CLAS12 detector and the physics program adopted for 12 GeV with emphasis to baryon and meson…
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