We give an overview of the present status of knowledge of the production of J/ψ, ψ ′ and Υ in high-energy hadron collisions. We first present two early models, namely the Colour-Singlet Model (CSM) and the Colour-Evaporation Model (CEM). The first is the natural application of pQCD to quarkonium production and has been shown to fail dramatically to describe data, the second is its phenomenologi...

The Υ(1S + 2S + 3S) → ee cross section is measured at mid-rapidity (y) in p + p collisions and in d+Au collisions at center-of-mass energy √ s = 200 GeV with the STAR detector at RHIC. In p + p, the measured cross section is found to be consistent with the world data trend as a function of √ s, in agreement with the Color Evaportaion Model (CEM), and underestimated by the Color Singlet Model (C...

Near the metal-insulator transition, the Hall coefficient R of metal-insulator composites (M-I composite) can be up to 104 times larger than that in the pure metal called Giant Hall effect. Applying the physical model for alloys with phase separation developed in [1] [2], we conclude that the Giant Hall effect is caused by an electron transfer away from the metallic phase to the insulating phas...

I investigate the Baryonic Tully-Fisher relation for a sample of galaxies with extended 21 cm rotation curves spanning the range 20 . Vf ≤ 300 kms . A variety of scalings of the stellar mass-to-light ratio Υ⋆ are considered. For each prescription for Υ⋆, I give fits of the form Md = AV x f . Presumably, the prescription that comes closest to the correct value will minimize the scatter in the re...

We determine the magnetic structures of HoFe6Sn6-type (Immm) YbMn6−yFeySn6 alloys (y=0.25, 0.50, 0.75 and 1.00) from powder neutron diffraction experiments. The valence state local magnetism Yb are investigated using X-ray Near Edge Spectroscopy (XANES) Magnetic Circular Dichroism (XMCD) at L3 edge. mean decreases upon Fe doping (from υ~2.66 down to υ~2.46) there is no 4f throughout series. for...

We estimate the most important corrections to the branching ratios for the invisible decays of quarkonium states, arising from possible extensions of the Standard Model. Among the possibilities considered are the presence of extra Z-bosons, minimal supersymmetric extensions of the Standard Model with R-parity violation and decays into Goldstinos. Prospects of detecting these corrections at exis...

Doppler spectroscopy has detected 136 planets around nearby stars. A major puzzle is why their orbits are highly eccentric, while all planets in our Solar System are on nearly circular orbits, as expected if they formed by accretion processes in a protostellar disk. Several mechanisms have been proposed to generate large eccentricities after planet formation, but so far there has been little ob...

Minijet production in √ s = 5.5 TeV Pb+Pb collisions at the LHC is expected to produce a gluon-dominated plasma with large initial temperatures and energy densities. We discuss the implications of the high initial temperatures on the screening mass and on the relative suppression of members of the Υ family. We demonstrate that pT -dependence of the Υ /Υ ratio is only expected if a quark-gluon p...

We study the radiative decay of Υ into a scalar glueball Υ → γGs using QCD factorization. We find that for this process the non-perturbative effects can be factorized into a matrix element well defined in non-relativistic QCD (NRQCD) and the gluon distribution amplitude. The same NRQCD matrix element appears also in leptonic decay of Υ and therefore can be determined from data. In the asymptoti...