Conferences and Workshops | |||||
Quark-Hadron Transition in Structure and Fragmentation Functions Hampton University Workshop Jefferson Lab April 17-18, 2000 Workshop Topic Recent measurements of the F2 structure function in the nucleon resonance region show a striking similarity with precision data on F2 in the deep inelastic region, at surprisingly low values of Q2. This implies that local duality, or Bloom-Gilman duality, works quantitatively far better than anticipated, indicating the near absence of high twist effects in low moments, if averaged over the full resonance region, even at Q2ª0.5 (GeV/c)2. Furthermore, the nucleon resonance data for Q2<0.5(GeV/c)2 still exhibit a surprising oscillatory behavior around one global curve, which is the framework of parton-hadron duality, resembles a valence-like quark distribution. In the semi-inclusive region, data from HERMES and JLab give hints that factorization into quark scattering and quark fragmentation, holds at lower values of v than previously anticipated. If so, this opens a doorway to studies of valence spin and flavor distributions, e.g. uv/dv. There are indications that such effects may be related to the appearance of parton-hadron duality in meson electroproduction. The workshop will focus on structure function and fragmentation function measurements to shed light on a) the onset of the parton-hadron duality phenomenon in both inclusive and semi-inclusive reactions, and b) the onset of factorization in semi-inclusive reactions. This workshop follows up on the January JLab Workshop on Physics Opportunities with 12-GeV Electrons, and addresses the impact a high-luminosity, 12-GeV electron beam facility on these issues. Organizing Committee
C.E. Keppel (HU/JLab) J.L. Goity (HU/JLab) R. Ent (JLab) Attendance The attendance of this Workshop will be limited to 50 participants Registration Those who intend to participate in this workshop are requested to register with S. Cannella by e-mail ( cannella@jlab.org). No registration fee will be required. Tentative Agenda
Monday April 17 - ARC Auditorium
Tuesday April 18th - ARC Auditorium
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