63 research outputs found
Instanton-Induced Polarization in Exclusive Hyperon Photoproduction
It is shown that instantons can provide an explanation of the strong
polarization transfer observed in exclusive hyperon photoproduction at JLab.Comment: 4 pages,1 figure, version to appear in Phys.Rev.D, Brief Repor
Glueball-Induced Partonic Energy Loss in Quark-Gluon Plasma
We discuss the energy loss of energetic parton jets in quark-gluon plasma
above the deconfinement temperature by the interaction with scalar and
pseudoscalar glueballs. It is shown that the loss by this mechanism is quite
important and may play the important role of the observed jet-quenching.Comment: 5 pages, 3 figures, version to appear in Phys.Rev.
The Physics of Glueballs
Glueballs are particles whose valence degrees of freedom are gluons and
therefore in their description the gauge field plays a dominant role. We review
recent results in the physics of glueballs with the aim set on phenomenology
and discuss the possibility of finding them in conventional hadronic
experiments and in the Quark Gluon Plasma. In order to describe their
properties we resort to a variety of theoretical treatments which include,
lattice QCD, constituent models, AdS/QCD methods, and QCD sum rules. The review
is supposed to be an informed guide to the literature. Therefore, we do not
discuss in detail technical developments but refer the reader to the
appropriate references.Comment: Invited review for Int. J. Mod. Phys. E, 32 pages, 12 figures, 8
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