|Conferences and Workshops|
Quark-Hadron Transition in Structure and
Hampton University Workshop
April 17-18, 2000
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.
C.E. Keppel (HU/JLab)
J.L. Goity (HU/JLab)
R. Ent (JLab)
The attendance of this Workshop will be limited to 50 participants
Those who intend to participate in this workshop are requested to register with S. Cannella by e-mail ( firstname.lastname@example.org). No registration fee will be required.
Monday April 17 - ARC Auditorium
Tuesday April 18th - ARC Auditorium
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