EARLE L. LOMON, Professor
of Physics, Emeritus
Research Interests
Quantum Chromodynamics (QCD), the dynamics of quarks and gluons,
is the modern theory of hadrons (strongly interacting particles),
determining their structure and interactions. The non-perturbative
and perturbative properties of QCD may both be expected to be important
in hadronic interactions at intermediate energies. A model which
appropriately includes the long range confinement and short range
asymptotic freedom aspects of QCD can be compared with experiments
to clarify our understanding of the transition between these two
extremes of theory.
Professor Lomon is very interested in these questions and has adapted
the R-matrix boundary condition method to provide a model that may
include enough of the physics to be compared with data and predict
new features. Its main aspects are the inclusion of coupled isobar
channels interacting via meson exchange at large range, coupled
to perturbative quark/gluon degrees of freedom at short range. The
model has been applied to several baryon-baryon systems (of strangeness
0, -1 and 2) and to the strangeness +1 kaon-nucleon system, successfully
predicting their known properties and predicting new "exotic"
resonances related directly to the behavior of simple multi-quark
configurations.
There is some experimental evidence for the existence of these
resonances. Present research is concentrating on the observable
properties of the S=-2 baryon-baryon system, which is expected to
have a low energy resonance; refining predictions in the S=0 nucleon-nucleon
system, for which quality data is being produced at new intermediate
energy accelerators; and on the high momentum transfer electromagnetic
form-factors of the deuteron to compare with new data from the energy
electron accelerator at Jefferson National Laboratory.
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Biographical Sketch
Forthcoming
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Selected Publications
Forthcoming
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