Study of Nucleon Resonance Electroexcitations at Jefferson Lab
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Nucleons are the most fundamental three-body systems in Nature. During the last decade crucial progress has been achieved in the exploration of the spectrum and the structure of nucleon resonances. Studies of exclusive ?N, ?+??p, K?, and K? electroproduction off protons on the evolution of the electrocouplings with photon virtuality Q2 using the CLAS spectrometer has revealed a complex interplay between an inner core of three dressed quarks surrounded by an external meson-baryon cloud. CLAS12 is the only facility capable of extending these results on the electrocouplings into the unexplored Q2 range, spanning the domain of quark momenta where ? 50% of hadron mass is generated. The increase of the CEBAF energy and the upgrade of the CLAS12 spectrometer to measure exclusive electroproduction channels at higher luminosity and photon virtualities will offer a unique opportunity to explore how the dominant part of hadron mass and the bound three-quark structure of the resonant states emerge from QCD.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 2283676
- Report Number(s):
- JLAB-PHY-24-3994; DOE/OR/23177-7397
- Resource Relation:
- Conference: 2023 Fall Meeting of DNP and APS and the Physical Society of Japan, Hawaii, November 23, 2023
- Country of Publication:
- United States
- Language:
- English
Similar Records
New Results on the Nucleon Resonance Spectrum and Structure from Photo- and Electroproduction Experiments
Insight into Strong QCD and the Emergence of Mass from N* Experiments