GSI-Nachrichten 1/99 en
ثبت نشده
چکیده
Further evidence for the predicted repulsive K nucleon potential in nuclear matter New data from the KAOS spectrometer at GSI reveal an azimuthally anisotropic distribution of K mesons in relativistic gold-gold collisions. In peripheral and semi-central collisions, K mesons are preferentially emitted perpendicular to the reaction plane. The results are consistent with the theoretical prediction of a repulsive K nucleon potential in nuclear matter. The behaviour of hadrons in hot and dense nuclear matter is one of the central topics of the nuclear reaction program at GSI. In particular, the production and propagation of strange
منابع مشابه
Filtern von Spam-Nachrichten mit kontextfreien Grammatiken
Spam wird heute überwiegend mittels so genannter musterbasierte SpamAlgorithmen über Botnetze verteilt. Bei musterbasiertem Spam werden die SpamNachrichten erst von den Bots aus einem Muster (template) und Fülldaten zusammengesetzt. Filteransätze für musterbasierten Spam versuchten bisher, dieses Muster aus den abgefangenen Nachrichten zu extrahieren und auf reguläre Ausdrücke abzubilden. Diese...
متن کاملGSI-Nachrichten 1/99 en
Simulations in Fermionic Molecular Dynamics simulations show, however, that even small systems exhibit all features of a phase transition, provided the total energy of the system can be determined well enough for each member of the statistical ensemble. The results are compared to the caloric curve deduced for finite nuclei by the ALADIN collaboration. The investigation of the equation of state...
متن کاملn uc l - th / 9 71 10 66 v 1 2 8 N ov 1 99 7 nucl - th / 9711066 Thermal Model Analysis of Particle Ratios at GSI Ni – Ni Experiments Using
The production of hadrons in Ni–Ni at the GSI is considered in a hadronic gas model with chemical equilibrium. Special attention is given to the abundance of strange particles which are treated using the exact conservation of strangeness. It is found that all the data can be described using a temperature T = 70± 10 MeV and a baryon chemical potential μB = 720± 20 MeV. Typeset using REVTEX 1
متن کاملThe GSI Time Anomaly: Facts and Fiction
The claims that the GSI time anomaly is due to the mixing of neutrinos in the final state of the observed electron-capture processes are refuted. With the help of an analogy with a double-slit experiment, it is shown that the standard method of calculation of the rate of an interaction process by adding the rates of production of all the allowed final states, regardless of a possible coherence ...
متن کاملConstats et fondements pour des méthodes d'ingénierie de SI dirigées par les exigences de gouvernance
RÉSUMÉ. Les ingénieurs ont pour objectif de construire des systèmes d’information (SI) qui doivent satisfaire les exigences des organisations actuelles positionnées dans un environnement en perpétuelle évolution. Dans ce contexte l’ingénierie des SI est un domaine clé pour limiter le risque de non-alignement du SI aux processus métier. La gouvernance des SI (GSI) a la responsabilité des process...
متن کامل