Thermal dilepton signal versus dileptons from open charm and bottom decays in heavy-ion collisions

We analyze the opportunity to observe thermal dileptons emitted off deconfined matter resulting in heavy-ion collisions at RHIC and LHC energies. Special kinematical conditions provided by the detector systems PHENIX and ALICE, and the so-called $M_\perp$ scaling behavior of thermal dilepton spectra are taken into account. Our considerations include energy loss effects of the fast heavy quarks in deconfined matter, which for themselves can help to identify the creation of a hot and dense parton medium. Due to a threshold like effect for decay leptons we find a window at large transverse pair momentum and fixed transverse mass where the thermal signal can exceed the background of dileptons from correlated semileptonic decays of charm and bottom mesons.Comment: 21 LaTeX pages including 7 eps figure

Correlations between resonances in a statistical scattering model

The distortion of the regular motion in a quantum system by its coupling to the continuum of decay channels is investigated. The regular motion is described by means of a Poissonian ensemble. We focus on the case of only few channels K<10. The coupling to the continuum induces two main effects, due to which the distorted system differs from a chaotic system (described by a Gaussian ensemble): 1. The width distribution for large coupling becomes broader than the corresponding $\chi^2_K$ distribution in the GOE case. 2. Due to the coupling to the continuum, correlations are induced not only between the positions of the resonances but also between positions and widths. These correlations remain even in the strong coupling limit. In order to explain these results, an asymptotic expression for the width distribution is derived for the one channel case. It relates the width of a trapped resonance state to the distance between its two neighboring levels.Comment: 23 pages, 7 Postscript figures. Submitted to Phys. Rev. E, Jan. 9

Bethe-Salpeter Amplitudes and Static Properties of the Deuteron

Extended calculations of the deuteron's static properties, based on the numerical solution of the Bethe-Salpeter equation, are presented. A formalism is developed, which provides a comparative analysis of the covariant amplitudes in various representations and nonrelativistic wave functions. The magnetic and quadrupole moments of the deuteron are calculated in the Bethe-Salpeter formalism and the role of relativistic corrections is discussed.Comment: 33 pages ([aps]{revtex} style), 9 Postscript figures; (55 pages if [preprint,aps]{revtex} style is used

Teilprojekt 5: Komplettierung und Nutzung des COSY-Flugzeitspektrometers TOF zur Untersuchung der Proton-Proton-Bremsstrahlung und anderer Reaktionen Abschlussbericht

Available from TIB Hannover: DtF QN1(72,11) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

FZR-Jahresbericht 2003: Forschung fuer Mensch und Umwelt

The following topics are dealt with: A multi-purpose experimental facility for the model development of two-phase flows, the first nuclear-physics experiments with bremsstrahlung at the ELBE accelerator, the molecular mechanisms of vision and general principles of the cellular signal processing, colloids in environment, protein oxidation and sickness, nondestructive study on glass pretiosa using proton beams. (HSI)SIGLEAvailable from TIB Hannover: RR 1847(398) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Bericht der Fruehjahrstagung der Studiengruppe fuer Elektronische Instrumentierung vom 27. bis 29. Maerz 2000 im Physikalischen Institut der Universitaet Heidelberg Vortraege

SIGLEAvailable from TIB Hannover: RR 1847(293) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Conference on advances and perspectives in radiotracer development Programs, abstracts

Proceedings of the conference, containing abstracts of all invited lectures and all papers. Short description of all posters presented during the meeting. Separate entries prepared from all lectures and most papers. Headings: Chemical synthesis of radiopharmaceuticals, labelling techniques, biotechnological preparation, molecular biology, drug targeting, animal experiments and first clinical trials. (MG)COST action B12 Radiotracers for in vivo assessment of biological functionsAvailable from TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLECommission of the European Communities (CEC), Brussels (Belgium)DEGerman

Bericht der Herbsttagung der Studiengruppe fuer Elektronische Instrumentierung (SEI) vom 28. bis 30. September 1998 im Forschungszentrum Juelich

Available from TIB Hannover: RR 1847(242) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Der Forschungsstandort Rossendorf Forschungszentrum Rossendorf (FZR). Verein fuer Kernverfahrenstechnik und Analytik Rossendorf (VKTA). Foerderverein fuer Wissenschaft, Forschung und Technologie Rossendorf ROTECH

Heute ist Rossendorf Sitz zweier neu gegruendeter Einrichtungen, dem Forschungszentrum Rossendorf und dem Verein fuer Kernverfahrenstechnik und Analytik Rossendorf. Neben der Grundlagenforschung werden Aufgaben im Zusammenhang mit der Stillegung und Entsorgung nuklearer Altlasten am Standort erfuellt. (DG)The illustrated brochure presents the Rossendorf research site at a glance. There are two major new establishments, the Rossendorf Research Center and the Verein fuer Kernverfahrenstechnik und Analytik Rossendorf (VKTA), whose main activities cover basic research and tasks in the field of nuclear facilities decommissioning and radwaste management on site. (DG)SIGLEAvailable from TIB Hannover: F95B1859 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Teilprojekt 8. Tritiumnachweis mittels Beschleunigermassenspektrometrie Abschlussbericht

Available from TIB Hannover: DtF QN1(72,14) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman