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R. Hurst

Bio: R. Hurst is an academic researcher from University of Genoa. The author has contributed to research in topics: Branching fraction & Quantum chromodynamics. The author has an hindex of 5, co-authored 5 publications receiving 44 citations.

Papers
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TL;DR: In this article, a trigger aimed at selecting those nuclear interactions which contain a charm particle is described, which uses a fast emulator of the PDP-11 which calculates the impact parameter of the decaying charged tracks originating from the charm decay.
Abstract: The implementation of a trigger aimed at selecting those nuclear interactions which contain a charm particle is described. The trigger uses a fast emulator of the PDP-11 which calculates the impact parameter of the decaying charged tracks originating from the charm decay. An enrichment factor of 15 is thereby obtained. The results obtained show that, in its present implementation, this trigger, while giving a good enrichment factor, performs a correct rejection, since it does not eliminate many good events that would have been retained by the more sophisticated selection of the offline programs. >

12 citations

Journal ArticleDOI
TL;DR: This paper measured the azimuthal correlation between beauty particles, and compared their result with predictions based on perturbative QCD, using a sample of 108 triggered events, produced in 350 GeV /c π− interactions in a copper target.

7 citations

Journal ArticleDOI
TL;DR: In this article, the decay of D 0 → μ + μ − among 1.25 × 10 5 μ+ μ − pairs produced by 350 GeV/c π − particles interacting in copper and tungsten targets was studied.

7 citations


Cited by
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Journal ArticleDOI
TL;DR: The history of the charm quantum number can be found in this paper, where the authors sketch the experimental environments and instruments employed to study the behavior of charm hadrons and then describe the theoretical tools for treating charm dynamics.
Abstract: 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 of charm mesons and baryons. Then we address leptonic, exclusive semileptonic and nonleptonic charm decays. Finally we treat $D^0 - \bar D^0$ oscillations and CP (and CPT) violation before concluding with some comments on charm and the quark-gluon plasma. We will make the case that future studies of charm dynamics -- in particular of CP violation -- can reveal the presence of New Physics. The experimental sensitivity has only recently reached a level where this could reasonably happen, yet only as the result of dedicated efforts. This review is meant to be both a pedagogical introduction for the young scholar and a useful reference for the experienced researcher. We aim for a self-contained description of the fundamental features while providing a guide through the literature for more technical issues.

169 citations

Journal ArticleDOI
C. Lourenco1, H. K. Wohri1
TL;DR: In this paper, the authors review the hadro-production data presently available on open charm and beauty absolute production cross-sections, collected by experiments at CERN, DESY and Fermilab.

129 citations

Journal ArticleDOI
TL;DR: In this article, the xF distributions of D+ and D− mesons were investigated at the CERN Ω′ spectrometer, and a clear excess of D− over D+, increasing at high xF, was observed.

58 citations

Journal ArticleDOI
TL;DR: The last decade has seen substantial progress in the use of solid state detectors, which are now exploited on a large scale in high energy physics experiments for precise positional measurements as mentioned in this paper, and the major classes of detector and the methods employed to construct them and instrument the large systems presently in use for particle tracking.
Abstract: The last decade has seen substantial progress in the use of solid state detectors, which are now exploited on a large scale in high energy physics experiments for precise positional measurements. This article surveys the major classes of detector and the methods employed to construct them and instrument the large systems presently in use for particle tracking. Some of the most topical areas of current research and an indication of future important applications are described.

29 citations