15 research outputs found
Preservation of equilibrium in orthograde and inverted body positions
The mechanism for regulation of the vertical pose with retention of equilibrium in the inverted body position was investigated
On the preservation of equilibrium in the orthograde and inverted positions of the body
The mechanism which regulates the vertical posture when maintaining equilibrium in an inverted position of the body is discussed
Coherent rho and J/psi photoproduction in ultraperipheral processes with electromagnetic dissociation of heavy ions at RHIC and LHC
We present predictions for the J/psi and rho meson production in the heavy
ion ultraperipheral collisions (UPC) for the current energy 2.76 TeV at the
LHC. Both total cross sections and cross sections with the neutron emission
from one or both nuclei are presented. We also analyse the RHIC rho meson
photoproduction data and emphasize importance of these data to test the current
model for nucleus break up in UPC.Comment: 16 pages, 7 figure
Heavy quarkonium: progress, puzzles, and opportunities
A golden age for heavy quarkonium physics dawned a decade ago, initiated by
the confluence of exciting advances in quantum chromodynamics (QCD) and an
explosion of related experimental activity. The early years of this period were
chronicled in the Quarkonium Working Group (QWG) CERN Yellow Report (YR) in
2004, which presented a comprehensive review of the status of the field at that
time and provided specific recommendations for further progress. However, the
broad spectrum of subsequent breakthroughs, surprises, and continuing puzzles
could only be partially anticipated. Since the release of the YR, the BESII
program concluded only to give birth to BESIII; the -factories and CLEO-c
flourished; quarkonium production and polarization measurements at HERA and the
Tevatron matured; and heavy-ion collisions at RHIC have opened a window on the
deconfinement regime. All these experiments leave legacies of quality,
precision, and unsolved mysteries for quarkonium physics, and therefore beg for
continuing investigations. The plethora of newly-found quarkonium-like states
unleashed a flood of theoretical investigations into new forms of matter such
as quark-gluon hybrids, mesonic molecules, and tetraquarks. Measurements of the
spectroscopy, decays, production, and in-medium behavior of c\bar{c}, b\bar{b},
and b\bar{c} bound states have been shown to validate some theoretical
approaches to QCD and highlight lack of quantitative success for others. The
intriguing details of quarkonium suppression in heavy-ion collisions that have
emerged from RHIC have elevated the importance of separating hot- and
cold-nuclear-matter effects in quark-gluon plasma studies. This review
systematically addresses all these matters and concludes by prioritizing
directions for ongoing and future efforts.Comment: 182 pages, 112 figures. Editors: N. Brambilla, S. Eidelman, B. K.
Heltsley, R. Vogt. Section Coordinators: G. T. Bodwin, E. Eichten, A. D.
Frawley, A. B. Meyer, R. E. Mitchell, V. Papadimitriou, P. Petreczky, A. A.
Petrov, P. Robbe, A. Vair
Photonuclear production of vector mesons in ultra-peripheral PbâPb collisions at the LHC
Photoproduction of light vector mesons in ultraperipheral collisions on the Large Hadron Collider
Photoproduction of J/Ï in PbâPb and pâPb collisions at the LHC with the ALICE detector
Recent results from the ALICE Collaboration on the photoproduction of J/Ï in PbâPb and pâPb collisions are presented along with results on the production of electronâpositron pairs in the collision of two photons