Recent experiments at Fermilab and CERN have observed a strong asymmetry between the hadroproduction cross sections of leading D mesons, containing projectile valence quarks, and nonleading charmed mesons, without projectile valence quarks. The observed correlations of the πN → DX cross section with the projectile charge violates the usual assumption that heavy quark jet fragmentation factorize...

It is widely believed that charm meson production and decay may play an important role in high energy astrophysical sources of neutrinos, especially those that are baryon-rich, providing an environment conducive to pp interactions. Using slowjet supernovae (SJS) as an example of such a source, we study the detectability of high-energy neutrinos, paying particular attention to those produced fro...

We present recent results on charm physics from CLEO-III, emphasizing QCD and hadronic structure. These include the decay Ξ 0 c → pK − K − π + and the form factor for D 0 → π − e + νe. We also discuss upcoming measurements with CLEO-c, including dramatic improvements in the D 0 → π − e + νe form factor, and glueball spectroscopy in J/ψ → γX. The CLEO collaboration has been in existence for over...

Experiments on charm hadroproduction have shown a substantial difference in the production of charm and anticharm hadrons. In this work we study Λ+ c and Λ c inclusive production in p−N interactions in the framework of two component models. We show that the recombination two component model gives a qualitatively and quantitatively good description of Λ c production while the intrinsic charm mod...

sNN =200 GeV)within the framework of the statistical hadronization model, SHM [1]. The model assumes that all charm quarks are produced in primary hard collisions and equilibrate in the quark-gluon plasma (QGP). In particular, no J/ψ mesons are preformed in the QGP, implying complete color screening [2]. Experimental results on the elliptic flow of electrons from charm mesons [3] argue in favor...

Performance of transaction processing systems is mostly determined by the amount of required physical disk I/O, which is due to database table accesses or log record writes. This paper describes a high-performance transaction processing system called Charm, which aims to reduce the performance impacts of disk I/O to the minimum. In current transaction processing architectures, a transaction blo...