Refine
Year of publication
Document Type
- Preprint (539)
- Article (274)
- Part of a Book (1)
Has Fulltext
- yes (814)
Is part of the Bibliography
- no (814)
Keywords
- Heavy Ion Experiments (20)
- Hadron-Hadron scattering (experiments) (11)
- Hadron-Hadron Scattering (8)
- Heavy-ion collision (5)
- Collective Flow (4)
- Quark-Gluon Plasma (4)
- Jets (3)
- Jets and Jet Substructure (3)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- Heavy Quark Production (2)
- Lepton-Nucleon Scattering (experiments) (2)
- Particle Correlations and Fluctuations (2)
- Particle and resonance production (2)
- Particle correlations and fluctuations (2)
- ALICE detector (1)
- Anti-nuclei (1)
- Audiodeskription (1)
- Barrierefreie Videos (1)
- Barrierefreiheit (1)
- Boosted Jets (1)
- Collective Flow, (1)
- Electron-pion identification (1)
- Electroweak interaction (1)
- Fibre/foam sandwich radiator (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Hard Scattering (1)
- Heavy Ion Experiment (1)
- Heavy ion storage ring (1)
- Ionisation energy loss (1)
- Jet Physics (1)
- Jet Substructure (1)
- LHC (1)
- Material budget (1)
- Multi-Parton Interactions (1)
- Multi-wire proportional drift chamber (1)
- Neural network (1)
- Orbital electron capture (1)
- Particle and Resonance Production (1)
- Pb–Pb collisions (1)
- Properties of Hadrons (1)
- QCD (1)
- Quark Deconfinement (1)
- Quark Gluon Plasma (1)
- Quark Production (1)
- Quarkonium (1)
- Relativistic heavy-ion collisions (1)
- Single particle decay spectroscopy (1)
- TR (1)
- Tracking (1)
- Transition radiation detector (1)
- Trigger (1)
- Two body weak decay (1)
- Umsetzung (1)
- Vector Boson Production (1)
- Xenon-based gas mixture (1)
- dE/dx (1)
- detector (1)
- experimental results (1)
- heavy ion experiments (1)
- quark gluon plasma (1)
Institute
- Physik (813)
- Frankfurt Institute for Advanced Studies (FIAS) (753)
- Informatik (720)
- Informatik und Mathematik (3)
- ELEMENTS (1)
- Hochschulrechenzentrum (1)
- studiumdigitale (1)
Coherent photoproduction of ρ⁰ vector mesons in ultra-peripheral Pb-Pb collisions at √sNN = 5.02 TeV
(2020)
Cross sections for the coherent photoproduction of ρ0 vector mesons in ultra-peripheral Pb-Pb collisions at sNN−−−√ = 5.02 TeV are reported. The measurements, which rely on the π+π− decay channel, are presented in three regions of rapidity covering the range |y| < 0.8. For each rapidity interval, cross sections are shown for different nuclear-breakup classes defined according to the presence of neutrons measured in the zero-degree calorimeters. The results are compared with predictions based on different models of nuclear shadowing. Finally, the observation of a coherently produced resonance-like structure with a mass around 1.7 GeV/c2 and a width of about 140 MeV/c2 is reported and compared with similar observations from other experiments.
Der Nutzung von Videos im Hochschulkontext werden verschiedene Potenziale zugesprochen (Dinmore, 2019). Damit aber alle Lernenden Videos nutzen und von diesen profitieren können, müssen diese barrierefrei umgesetzt werden. Ausgehend von dem Projekt „Degree 4.0“ an der Technischen Universität Dortmund, wird in diesem Beitrag die Umsetzung der Barrierefreiheit von (didaktischen) Videos – mit besonderem Schwerpunkt auf Audiodeskription – und weitergehende Herausforderungen für die Arbeit mit (barrierefreien) Videos thematisiert. Besonders bei der Gestaltung von Audiodeskription müssen fachdidaktische Spezifika der Videos im Umsetzungsprozess berücksichtigt werden. Für die barrierefreie Gestaltung der Videos aus verschiedenen, im Projekt beteiligten Fachdidaktiken wurde ein Workflow entwickelt, der in diesem Beitrag vorgestellt wird.
An experiment addressing electron capture (EC) decay of hydrogen-like 142Pm60+ions has been conducted at the experimental storage ring (ESR) at GSI. The decay appears to be purely exponential and no modulations were observed. Decay times for about 9000 individual EC decays have been measured by applying the single-ion decay spectroscopy method. Both visually and automatically analysed data can be described by a single exponential decay with decay constants of 0.0126(7)s−1 for automatic analysis and 0.0141(7)s−1 for manual analysis. If a modulation superimposed on the exponential decay curve is assumed, the best fit gives a modulation amplitude of merely 0.019(15), which is compatible with zero and by 4.9 standard deviations smaller than in the original observation which had an amplitude of 0.23(4).
This paper reports on Monte Carlo simulation results for future measurements of the moduli of time-like proton electromagnetic form factors, |GE | and |GM|, using the ¯pp → μ+μ− reaction at PANDA (FAIR). The electromagnetic form factors are fundamental quantities parameterizing the electric and magnetic structure of hadrons. This work estimates the statistical and total accuracy with which the form factors can be measured at PANDA, using an analysis of simulated data within the PandaRoot software framework. The most crucial background channel is ¯pp → π+π−,due to the very similar behavior of muons and pions in the detector. The suppression factors are evaluated for this and all other relevant background channels at different values of antiproton beam momentum. The signal/background separation is based on a multivariate analysis, using the Boosted Decision Trees method. An expected background subtraction is included in this study, based on realistic angular distribuations of the background contribution. Systematic uncertainties are considered and the relative total uncertainties of the form factor measurements are presented.