πΛΣcoupling extracted from hyperonic atoms

Hyperonic Crystallization in Hadronic Matter

We propose a method for analyzing the formation of spatially ordered configurations in hadronic matter, related to the crystallization of the hyperonic sector in a lattice. The method allows the determination of the density ranges where such ordered configurations are energetically favoured with respect to the usual gaseous configurations. This leads to the determination of the parameters of a ...

Nuclear-Charge Screening in Positronium Formation from Helium Atoms

An analytical treatment of the electron screening effect within an active-electron model is given for positronium formation from helium atoms. A first-order distorted wave approximation with correct boundary conditions is applied to evaluate the transition amplitude. In the range of impact energy for which the introduced perturbative approach is valid, both the total and differential cross sect...

Verb Frames Extracted from Dictionaries

Answer Retrieval From Extracted Tables

Question answering (QA) on table data, which contains densely packed information in two-dimensional form, is a challenging information retrieval task. Data can be placed at a distance from the metadata describing it. The metadata itself can be difficult to identify given the layout of a particular table. This paper describes a QA system for tables created with both machine learning and heuristi...

Extracted from Infected Horse Spleen

Antigenic relationship between purified equine infectious anemia (EIA) virus and spleen-derived antigen from EIA-infected horses was examined by immunodiffusion. Identical antigenicity of these two antigens has been proven because precipitation lines formed between the two antigens and EIA antiserum connected with each other. The results indicate that the antigenic substance derived from infect...