Pionium interacting with matter: magnetic terms and relativistic corrections

Autor:	Gerhard Baur, T A Heim, Dirk Trautmann, Kai Hencken
Rok vydání:	2001
Předmět:	Physics Large Hadron Collider Pion Quantum electrodynamics Dirac (software) Electromagnetic coupling Context (language use) Condensed Matter Physics Relativistic quantum chemistry Atomic and Molecular Physics and Optics Exotic atom Pionium
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 34:3763-3774
ISSN:	1361-6455 0953-4075
DOI:	10.1088/0953-4075/34/19/303
Popis:	Magnetic contributions to the interaction of ordinary matter with pionium, i.e. exotic atoms formed from oppositely charged pions, are calculated explicitly in the context of the experiment DIRAC at CERN. These contributions have previously been estimated to amount to about 1% of the complete cross sections. Since this experiment requires the cross sections for electromagnetic processes at the 1% level as an input, a justification by explicit calculation of the previous estimations is necessary. We also estimate the magnitude of relativistic effects particularly for the electromagnetic coupling of the pionium system to the target system. These effects turn out to be negligible.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b8ef3cf6cbf92f0a23bfc20d9341af5c https://doi.org/10.1088/0953-4075/34/19/303 Zobrazit plný text záznamu