Heavy Quark Production at an Electron-Ion Collider

An Electron-Ion Collider at Jefferson lab

As explained in the oral presentation [1], the original plans for an electron-ion collider (ELIC) at Jefferson Lab involved the construction of two figure-of-eight rings, intersecting at up to four collision points, with a proton energy of 30-225 GeV (30-100 GeV/A for ions up to Pb) and electrons (and positrons) from 3 to 9 GeV [2]. Since the construction of such a facility must await completio...

Heavy Flavor Production at the electron-proton collider HERA

An overview over the recent heavy flavor results of the H1 and ZEUS collaborations is presented. Various techniques to tag the heavy quark, which allow to explore different phase space regions, are employed. Predictions of pertubative QCD are compared to the charm and beauty production data. Charm and beauty fractions of the proton structure function F2 are extracted.

Squeezed Fermions at Relativistic Heavy Ion Collider

Large back-to-back correlations of observable fermion – anti-fermion pairs are predicted to appear, if the mass of the fermions is modified in a thermalized medium. The back-to-back correlations of protons and anti-protons are experimentally observable in ultra-relativistic heavy ion collisions, similarly to the Andreev reflection of electrons off the boundary of a superconductor. Surprisingly,...

Physics at the Relativistic Heavy Ion Collider

Heavy Quark Production at Hera

Results on open charm production in e-p collisions at HERA obtained with a high statistics sample are presented and compared with next-to-leading order (NLO) QCD predictions. The diierential cross sections for photoproduced D mesons are above all available NLO calculations, in particular in the forward (proton) direction. A study of dijet photoproduction (PHP) associated with charm yields signi...