ON A POSSIBLE NEARTHRESHOLD (LAMBDA-LAMBDA)OVER-BAR STATE

Authors
CARBONELL J PROTASOV KV DALKAROV OD
Citation
J. Carbonell et al., ON A POSSIBLE NEARTHRESHOLD (LAMBDA-LAMBDA)OVER-BAR STATE, Physics letters. Section B, 306(3-4), 1993, pp. 407-410
Citations number
31
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
306
Issue
3-4
Year of publication
1993
Pages
407 - 410
Database
ISI
SICI code
0370-2693(1993)306:3-4<407:OAPN(S>2.0.ZU;2-4
Abstract
The behaviour of the ppBAR --> LAMBDALAMBDABAR reaction cross section near the LAMBDALAMBDABAR threshold is described within a hermitian cou pled-channels approach, The observed structure is shown to be caused b y a narrow LAMBDALAMBDABAR subthreshold state of quasinuclear nature. This resonance with quantum numbers J(PC) = 1-- is produced in the 3SD 1 partial wave and has a width of a few MeV. The physical reasons for the smallness of its width are explained. Other experimental possibili ties to find this resonance are proposed.