Filters
Results 1 - 1 of 1
Results 1 - 1 of 1.
Search took: 0.026 seconds
Tatischeff, B.; Comets, M.P.; Le Bornec, Y.; Willis, N.
Paris-11 Univ., 91 - Orsay (France). Inst. de Physique Nucleaire1990
Paris-11 Univ., 91 - Orsay (France). Inst. de Physique Nucleaire1990
AbstractAbstract
[en] The experimental evidence for narrow dibaryons has an essential importance if it can be associated to quark degrees of freedom in nuclei. The difficulty is double: first the corresponding structures have to be observed. Second when observed these structures have to be dissociated as much as possible from any classical explanation as for example a threshold effect corresponding to the opening of a new channel of mesons and two baryons in interaction. Extensive researches are done in some laboratories with emphasizes on the accuracy of the data: only such data, achieved in the two last years will be presented here. The solution of the first difficulty needs data of high precision, both statistical and systematic. The second point: the identification of data with quark degrees of freedom is before all a theoretical problem although it will be clearly favoured by the narrowness of the observed dibaryons. In opposition to experimental investigations for T = 1 and T = 2 dibaryons, where many experiments have been accomplished, there have been no data concerning pure isoscalar dibaryon search. Experimentally evidence for isovector dibaryons has been strengthened, especially in the range above M = 2 MN + Mπ. Intensive works are presently carried out below this threshold. There is still no signature in the isoscalar dibaryon sector. Different experiments have been accomplished in the search of T = 2 narrow dibaryons, at Saturne, Triumf and Lampf, but in any case a narrow structure has been observed
Primary Subject
Secondary Subject
Source
1990; 12 p; International Seminar on High Energy Physics Problems, Relativistic Nuclear Physics and Quantum Chromodynamics; Dubna (USSR); 24-29 Sep 1990
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue