Neutral orbitally excited P-wave charm mesons have been reconstructed in the D * ± π ∓ final state and the charm-strange meson D ± s1 (2536) was found in the D * ± K 0 s final state. A search for radially excited charm mesons in the D * ± π + π − final state has also been performed. A search for a charm pentaquark state near 3.1 GeV was made in the decay mode D * ± p ∓. Using more than 40,000 r...

We report on the first observation of open charm production in neutral current deep inelastic neutrino scattering as seen in the NuTeV detector at Fermilab. The production rate is shown to be consistent with a pure gluon-Z boson production model, and the observed level of charm production is used to determine the effective charm mass. As part of our analysis, we also obtain a new measurement fo...

The expected rates for charm-tagged jet photoproduction are evaluated for a number of tagging procedures, and some of the physics potential is discussed. Charm in jets is tagged using D’s, μ’s, or tracks from secondary vertices which might be identified in a microvertex detector. We find high expected event rates, leading to the possibility of placing strong constraints on the kinematics of cha...

Recent results of open charm and beauty production in electron proton scattering at HERA are presented. In photoproduction, the measured cross sections for charm exceed fixed order NLO QCD calculations. Experimental evidence supports the hypothesis that a significant fraction of photoproduction events with charm can be described by resolved photon processes, where the charm quark is a constitue...

MPI and Charm++ embody two distinct perspectives for writing parallel programs. While MPI provides a processor-centric, user-driven model for developing parallel codes, Charm++ supports work-centric, overdecompositionbased, system-driven parallel programming. One or the other can be the best or most natural fit for distinct modules that constitute a parallel application. In this paper, we prese...

— After briefly recapitulating the history of the charm quantum number we sketch the experimental environments and instruments employed to study the behaviour of charm hadrons and then describe the theoretical tools for treating charm dynamics. We discuss a wide range of inclusive production processes before analyzing the spectroscopy of hadrons with hidden and open charm and the weak lifetimes...

Recently there was a significant change of views on physical properties and underlying dynamics of Quark-Gluon Plasma at T = 170−350MeV , produced in heavy ion collisions at RHIC. Instead of being a gas of q, g quasiparticles, a near-perfect liquid is observed. Also, precisely in this temperature interval, the interaction deduced from lattice studies is strong enough to support multiple binary ...

Recently several factors converged to ignite a renaissance in charm physics. These factors include: • the need for precision measurements from the charm sector to interpret quantitatively CP violation results from the beauty sector, • technical and computational developments in Lattice QCD that led to precise calculations that can face precision experimental challenges in the charm sector, • di...

Recent hadronic charm decay results from fixed-target experiments are presented. New measurements of the D0 → K−K+K−π+ branching ratio are shown as are recent results from Dalitz plot fits to D+ → K−K+π+, π+π−π+, K−π+π+, K+π−π+ and Ds → π+π−π+, K+π−π+. These fits include measurements of the masses and widths of several light resonances as well as strong evidence for the existence of two light s...

OBJECTIVES The objective of this study was to compare Control of Substances Hazard to Health (COSHH) Essentials (a chemical risk assessment method in the UK) with Chemical Hazard Risk Management (CHARM) (a chemical risk assessment method in South Korea). The differences between the two processes were explored with a particular focus on their features and distinctions. METHODS The results obta...