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Our main program of research is the study of the quark/gluon structure of
hadrons and nuclei. The research is centered on the treatment of nonperturbative
as well as perturbative as well as perturbative QCD, the theory of strong
quark-gluon interactions, and the interplay between the strong and electroweak
interactions. Recently, we have been using the method of QCD Sum Rules to
include the nonperturbative effects. In this method the nonperturbative gluonic
interactions are represented by quark and gluon condensates, which were formed
during an early-universe phase transition as the present physical vacuum
evolved. Problems in this area completed during the past few years include the
weak parity-violating nuclear interaction, isospin violations in systems of
mesons and baryons and the determination of the coupling of fields to hadrons.
Present work includes the properties of hadrons in nuclear matter, a topic of
interest for nuclear physics as well as for nuclear astrophysics and the study
of early-universe phase transitions. Related research on the use of light-cone
Bethe-Salpeter integral equations allow us to study the transition from
perturbative to nonperturbative QCD with increasing momentum transfer. Much of
the research is carried out via joint international collaborations with
Taiwanese and Chinese theorists.
Selected Publications
L. S. Kisslinger, Ho-Meoyng Choi and C-R. Ji. hep-ph/0101053,
"Pion Form Factor and Quark Mass Evolution in a Light-Front Bethe-Salpeter
Model".
Phys. Rev. D63, 11305 (2001)
L. S. Kisslinger and M. B. Johnson. hep-ph/0106158,
"Scalar Mesons, Glueballs, Instantons and the Glueball/Sigma".
accepted for publication in Physics Letters
Ho-Meoyng Choi, C-R. Ji and L. S. Kisslinger, hep-ph/0104117,
"Skewed Quark Distributions of the Pion in the Light-Front Quark Model".
Phys. Rev. D64, 093006 (2001)
Meissner, T. and L. S. Kisslinger, "Mesons as q bar q Bound States from
Euclidean 2-Point Correlators in the Bethe-Salpeter Approach," Phys. Rev.
C59,
986 (1999).
Kisslinger, L. S. and Z. Li, "Sigma Signal for Hybrid Baryon
Decay," Phys. Lett B445, 271 (1999).
Henley, E. M., W-Y. P. Hwang and L. S. Kisslinger, "The Weak
Parity-Violating Pion-nucleon Coupling (Addendum)," Phys. Lett. B440,
449 (1998).
Kisslinger, L. S. and T. Meissner, "Structure of Vacuum
Condensates," Phys. Rev. C57, 1528 (1998).
Kisslinger, L.S., T. Goldman and Z. Li, "QCD Penguin Contributions to
Isospin Splittings of Heavy-Light Quark Systems," Phys. Lett. B414,
263 (1998).
Johnson, M.B. and L.S. Kisslinger, "Hadronic Couplings Via QCD Sum Rules
Using Three-Point Functions I: Vacuum Susceptibilities," Phys. Rev.
D57,
2847 (1998).
Kisslinger, L. S., "Gluonic Hadrons," Nucl. Phys.
A629, 30c
(1998).
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