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Targeting for rare observables, the CBM experiment will operate at high interaction rates of up to 10 MHz, which is unprecedented in heavy-ion experiments so far. It requires a novel free-streaming readout system and a new concept of data processing. The huge data rates of the CBM experiment will be reduced online to the recordable rate before saving the data to the mass storage. Full collision reconstruction and selection will be performed online in a dedicated processor farm. In order to make an efficient event selection online a clean sample of particles has to be provided by the reconstruction package called First Level Event Selection (FLES).
The FLES reconstruction and selection package consists of several modules: track finding, track fitting, event building, short-lived particles finding, and event selection. Since detector measurements contain also time information, the event building is done at all stages of the reconstruction process. The input data are distributed within the FLES farm in a form of time-slices. A time-slice is reconstructed in parallel between processor cores. After all tracks of the whole time-slice are found and fitted, they are collected into clusters of tracks originated from common primary vertices, which then are fitted, thus identifying the interaction points. Secondary tracks are associated with primary vertices according to their estimated production time. After that short-lived particles are found and the full event building process is finished. The last stage of the FLES package is a selection of events according to the requested trigger signatures. The event reconstruction procedure and the results of its application to simulated collisions in the CBM detector setup are presented and discussed in detail.
Chromatic, geometric and space charge effects on laser accelerated protons focused by a solenoid
(2011)
We studied numerically emittance and transmission effects by chromatic and geometric aberrations, with and without space charge, for a proton beam behind a solenoid in the laser proton experiment LIGHT at GSI. The TraceWin code was employed using a field map for the solenoid and an initial distribution with exponential energy dependence close to the experiment. The results show a strong effect of chromatic, and a relatively weak one of geometric aberrations as well as dependence of proton transmission on distance from the solenoid. The chromatic effect has an energy filtering property due to the finite radius beam pipe. Furthermore, a relatively modest dependence of transmission on space charge is found for p production intensity below 1011.
The standard implementation of the HRG model has been shown to be unable to describe all the available data on QCD matter. Here we show the balance of repulsive and attractive hadronic interactions on QCD thermodynamics through observables both calculated by lattice simulations and measured in experiment. Attractive interactions are mediated by resonance formation, which are here implemented through extra states predicted by the Quark Model, while repulsive interactions are modelled by means of Excluded Volume (EV) effects. Informations on flavour dependent effective sizes are extracted. It is found that EV effects are present in lattice QCD thermodynamics, and are essential for a comprehensive description of higher order fluctuations of conserved charges.
Die Tagung rief dazu auf, die Verbindlichkeit von Versprechen als allgemeines Phänomen zu untersuchen, also zu ergründen, inwiefern man unabhängig von ihrer Ausgestaltung in konkreten Rechtsordnungen oder anderen Normensystemen von einer "vor-rechtlichen" Verbindlichkeit sprechen kann. Literarische Texte aller Zeiten bis hin zu den Mythen bezeugen die Bindung an das Wort als Urerfahrung, die von jeder gesellschaftlichen Konvention unabhängig erscheint. Ebenso kennen sie aber Verrat und offenen oder verdeckten Wortbruch, deren Folgen sie thematisieren. Strukturelle Verwandtschaften einerseits und gegenseitige Beeinflussung andererseits der literarischen und der rechtlichen Auseinandersetzung mit dem Versprechen sollten untersucht werden.
[Tagungsbericht] Making finance sustainable: Ten years equator principles – success or letdown?
(2013)
In 2003, a number of banks adopted the Equator Principles (EPs), a voluntary Code of Conduct based on the International Finance Corporation’s (IFC) performance standards, to ensure the ecological and social sustainability of project finance. These so called Equator Principles Financial Institutions (EPFI) commit to requiring their borrowers to adopt sustainable management plans of environmental and social risks associated with their projects. The Principles apply to the project finance business segment of the banks and cover projects with a total cost of US $10 million or more. While for long developing countries relied on World Bank and other public assistance to finance infrastructure projects there has occurred a shift in recent years to private funding. The NGOs have been frustrated by this shift of project finance as they had spent their resources to exercise pressure on the public financial institutions to incorporate environmental and social standards in their project finance activities. However, after a shift of NGO pressure to private financial institutions the latter adopted the EPs for fear of reputational risks. NGOs had laid down their own more ambitious ideas about sustainable finance in the Collevecchio Declaration on Financial Institutions and Sustainability. Legally speaking, the EPs are a self-regulatory soft law instrument. However, it has a hard law dimension as the Equator Banks require their borrowers to comply with the EPs through covenants in the loan contracts that may trigger a default in a case of violation. ...
We show the first results for parton distribution functions within the proton at the physical pion mass, employing the method of quasi-distributions. In particular, we present the matrix elements for the iso-vector combination of the unpolarized, helicity and transversity quasi-distributions, obtained with Nf = 2 twisted mass cloverimproved fermions and a proton boosted with momentum = 0.83 GeV. The momentum smearing technique has been applied to improve the overlap with the proton boosted state. Moreover, we present the renormalized helicity matrix elements in the RI’ scheme, following the non-perturbative renormalization prescription recently developed by our group.
We discuss the current developments by the European Twisted Mass Collaboration in extracting parton distribution functions from the quasi-PDF approach. We concentrate on the non-perturbative renormalization prescription recently developed by us, using the RI′ scheme. We show results for the renormalization functions of matrix elements needed for the computation of quasi-PDFs, including the conversion to the MS scheme, and for renormalized matrix elements. We discuss the systematic effects present in the Z-factors and the possible ways of addressing them in the future.
The paper is structured as follows. Section 2.1 introduces the basic classes of adjectives that constitute the factual core of the paper. Section 2.2 summarizes in greater detail the X° and the XP movement approaches to word order variation within the DP. Section 3 briefly discusses problems for both approaches. Sections 4.1, 5.1, and 5.2 draw from Alexiadou (2001) and contain a discussion of Greek DS and its relevance for a re-analysis of the word order variation in the Romance DP. Section 4.2 introduces refinements to Alexiadou & Wilder (1998) and Alexiadou (2001). Section 5.3. discusses certain issues that arise from the analysis of postnominal adjectives in Romance as involving raising of XPs. Section 6 discusses phenomena found in other languages, which at first sight seem similar to DS. However, I show that double definiteness in e.g. Hebrew, Scandinavian or other Balkan languages constitutes a different type of phenomenon from Greek DS, thus making a distinction between determiners that introduce CPs (Greek) and those that are merely morphological/agreement markers (Hebrew, Scandinavian, Albanian).