We review some recent results on heavy quark production in high energy hadronic collisions. We will discuss in particular the status of production cross sections for bottom quarks and charmonium states and will present some studies on the production of bottom and charm jets, at the inclusive level and in association with electroweak gauge bosons.

It is shown that the quark–gluon interaction induced by instan-tons leads to the quark anomalous chromomagnetic moment. In the instanton-liquid model for the QCD vacuum, the chromomagnetic moment is µ a = − πf 2αs , where f is the packing fraction of instantons in the vacuum.

Considering cold, dense quark matter with two massless quark flavors, we demonstrate how, in a self-consistent calculation in the framework of QCD, the condensation of Cooper pairs induces a non-vanishing background color field. This background color field has precisely the right magnitude to cancel tadpole contributions and thus ensures overall color neutrality of the two-flavor color supercon...

A parametrization of the 3 × 3 Cabibbo-Kobayashi-Maskawa matrix, V , is presented in which the parameters are the eigenvalues and the components of its eigenvectors. In this parametrization, the small departure of the experimentally determined V from being moduli symmetric (i.e. |Vij | = |Vji|) is controlled by the small difference between two of the eigenvalues. In case, any two eigenvalues ar...

To explain the T-T' mass splitting of the recently discovered T resonances, we interpret them as bound states of a quark and an antiquark which are not members of the fundamental (2) representation of color SU(2). A quark in the 8 (or maybe 5) representation is consistent with the data. We discuss some of its properties and the phenomenological consequences that follow from our suggestion. (Sub...

In particular calculations have been made for the detection of extraterrestrial high energy neutrinos. Additional the rest-energy of a neutrino is calculated (equivalent to its rest mass). But both calculations are not standard. The calculations are made from the perspective of a new model for the universe: The Double Torus hypothesis. The alternative calculation shows that the result matches a...

An experimentally motivated QCD analysis of the behaviour of the Adler D-function in the Euclidian region is described. It is stressed that by taking account of b-quark mass-dependent s-e ects one obtains better agreement between theoretical predictions and experimentally motivated behaviour of the D-function at large Euclidian momentum transfer. A more detailed analysis of QCD predictions, inc...

Sum rules for twist-3 distributions are reexamined. Integral relations between twist-3 and twist-2 parton distributions suggest the possibility for a δ-function at x = 0. We confirm and clarify this result by constructing hL and h 3 L (quark-gluon interaction dependent part of hL) explicitly from their moments for a one-loop dressed massive quark. The physics of these results is illustrated by ...

The advent of gene chips has led to a promising technology for cell, tumor, and cancer classification. We exploit and expand the methodology of recursive partitioning trees for tumor and cell classification from microarray gene expression data. To improve classification and prediction accuracy, we introduce a deterministic procedure to form forests of classification trees and compare their perf...

O(α) QED radiative corrections to neutral current deep inelastic production of heavy quarks are calculated in the leading log approximation and compared with the corresponding corrections assuming a massless charm parton. Besides the inclusive case, corrections to the semi-inclusive dσ/dxdydz and the effect of z-cuts are studied. In the latter case, the massless corrections differ from the corr...