The existence of baryons with two and three charm quarks is expected from our present understanding of hadronic structure. In the doublecharm system one expects a J=1/2 ground state iso-doublet, termed Ξ cc in PDG notation [1]. Most predictions for the masses of the J=1/2 states and the J=3/2 hyperfine excitations expect the ground state near 3.6 GeV/c and a hyperfine split of 60 MeV/c [2]. The...

The role of charm in testing the Standard Model description of quark mixing and CP violation through measurements of lifetimes, decay constants and semileptonic form factors is reviewed. Together with Lattice QCD, charm has the potential this decade to maximize the sensitivity of the entire flavor physics program to new physics. and pave the way for understanding physics beyond the Standard Mod...

Recent results on open charm production at HERA are presented. Charm quarks are identified via the reconstruction of D-mesons. The charm contribution to the proton structure function is shown. Evidence for an exotic anti-charmed baryon state observed by H1 is presented. The data show a narrow resonance in the Dp invariant mass combination at 3099±3stat±5syst MeV. The resonance is interpreted as...

The production of charm and beauty quarks in ep interactions has been measured with the ZEUS detector at HERA for squared four-momentum exchange Q 2 > 20 GeV 2 , using an integrated lu-minosity of 126 pb −1. Charm and beauty quarks were identified through their decays into muons. Cross sections are presented for muon transverse momenta p µ T > 1.5 GeV and pseudorapidities −1.6 < η µ < 2.3. The ...

Open charm production during the equilibration of a gluon dominated parton plasma is calculated, with both the time-dependent temperature and parton densities given by a set of rate equations. Including pre-thermal production, the total enhancement of open charm production over the initial gluon fusion depends sensitively on the initial parton density and the effective temperature. The dependen...

Charm++ is a parallel programming system that evolved over the past 20 years to become a well-established system for programming parallel science and engineering applications, in addition to the combinatorial search applications with which it started. At its earliest point, the precursor to Charm++, the Chare Kernel, was a purely reactive specification, similar to most actor languages. This pap...