We propose the formulation of a dihadron fragmentation function in terms of parton matrix elements. Under the collinear factorization approximation and facilitated by the cut-vertex technique, the two hadron inclusive cross section at leading order (LO) in e+ eannihilation is shown to factorize into a short distance parton cross section and the long distance dihadron fragmentation function. We ...

It was ­ rst pointed out by Drell & Yan (1970) that parton model ideas developed for deep-inelastic scattering could be extended to certain processes in hadron{hadron collisions. The paradigm process, proposed by Drell & Yan, was the production of a massive lepton pair by quark{antiquark annihilation: the Drell{Yan process (illustrated in ­ gure 1). For the production of a lepton pair of invari...

Quantum Chromodynamica provides a good description of many aspects of high energy hadron-badron collisions, and this will be described, along with some aspects that are not yet understood in QCD. Topics include high ET jet production, direct photon, W, 2, and heavy flavor production, rapidity gaps, and hard diffraction. *Supported by DOE contract through Fermilab contracts. @ 1996 by Michael G....

Quality Assurance in hadron therapy is crucial to ensure a safe and accurate dose delivery the patients. This requires fast reliable detectors with high spatial resolution. A first LaGEMPix prototype that combines triple Gas Electron Multiplier highly pixelated readout based on matrix of organic photodiodes coated an oxide thin film transistor backplane has been built. The version proven have l...