"Alpha decays" of Be-10(Lambda) and B-10(Lambda) hypernuclei on a nuclotron: A clue to some puzzles in nonleptonic processes

0031878 - ÚJF 2006 RIV US eng J - Journal Article
Batusov, Yu. - Lukstins, J. - Majling, Lubomír - Parfenov, AN.
"Alpha decays" of Be-10(Lambda) and B-10(Lambda) hypernuclei on a nuclotron: A clue to some puzzles in nonleptonic processes.
[„Alfa rozpad“ hyperjader 10Be a 10B: Klíč k řešení některých záhad.]
Physics of Particles and Nuclei. Roč. 36, č. 2 (2005), s. 169-190. ISSN 1063-7796. E-ISSN 1531-8559
R&D Projects: GA ČR GA202/02/0930
Institutional research plan: CEZ:AV0Z10480505
Keywords : nonmesonic weak decay * hyperon-nucleon interaction * Lambda-N-interaction
Subject RIV: BE - Theoretical Physics
Impact factor: 0.505, year: 2005

Hypemuclei are a convenient laboratory in which to study a baryon-baryon weak interaction and the associated effective lweak Hamiltonian. The strangeness changing process, in which a A hyperon in nuclear matter converts to a neutron with a release of up to 176 MeV, provides a clear signal for the conversion of an s quark to a d quark. It is shown how the nuclear structure aspects of the problem, often an unwelcome detail of calculations attempting to understand a basic two-body AN -> NN interaction, can be used to pick out the components of the effective weak Hamiltonian. It is well known that removing one neutron from Be-9 results in Be-8* and a subsequent alpha alpha decay. Through this process, it should be possible to identify the final states of a residual nucleus.

Hyperjádra jsou vhodnou laboratoří pro studium neleptonových slabých procesů.
Permanent Link: http://hdl.handle.net/11104/0132511