The workshop is conducted on-line via ZOOM. The link for the connection is [ZOOM link].
Target fragmentation in deep-inelastic processes is emerging as a new field of study in hadronic and nuclear physics. Nucleon fragmentation in ep/γp/pp scattering provides new possibilities for measuring the spin/flavor decomposition of partonic structure and gives insight into multiparton correlations and hadronization dynamics (diquark fragmentation, quantum number transport). An important special case is diffractive scattering (rapidity gap events), where the nucleon remains intact or dissociates in a low-mass hadronic state. Nuclear fragmentation in eA/γA/pA scattering provides critical information on the nuclear configuration during the high-energy process (spectator tagging, centrality) and can be used to study nuclear final-state interactions and hadronization dynamics.
Target fragmentation measurements are performed in fixed-target (JLab, COMPASS, HERMES, earlier experiments) and collider experiments (HERA, RHIC, LHC, EIC) over a wide range of energy and momentum transfers, and with various hard processes probing the hadron (DIS, jets, heavy flavor production). In collider experiments the target fragments or diffractive protons/nuclei are detected with forward detectors integrated into the interaction region. The forward detection capabilities of the EIC offer excellent prospects for target fragmentation physics and have been explored and documented in the recent Yellow Report.
The workshop will review the physics opportunities in target fragmentation measurements in collider and fixed-target experiments. The goal is to formulate a coherent program combining the results of different experiments (energy range, type of probe) and define the context and objectives for target fragmentation measurements at EIC. The workshop will focus in particular on the following new directions:
The workshop brings together theoretical and experimental researchers in quantum chromodynamics and hadron structure, high-energy ep/γp/pp scattering, ultraperipheral pA/AA collisions, nuclear breakup, and detector development, for an in-depth discussion of these topics.
The workshop is conducted in on-line format. The sessions are scheduled for 09:00-16:00 ET to allow for simultaneous participation from European and US timezones. Extensive time is reserved for topical discussions.
The previous 2020 CFNS Workshop "Target fragmentation physics with EIC" reviewed target fragmentation physics from a general perspective and documented the interest in future EIC measurements. The new workshop here continues this effort and focuses on the specific new developments described above.