THE ANALYSIS OF THE Q(2)(Q)OVER-BAR(2) SYSTEM BASED ON THE DIQUARK CLUSTER MODEL

Citation
Y. Uehara et al., THE ANALYSIS OF THE Q(2)(Q)OVER-BAR(2) SYSTEM BASED ON THE DIQUARK CLUSTER MODEL, Nuclear physics. A, 606(3-4), 1996, pp. 357-406
Citations number
131
Categorie Soggetti
Physics, Nuclear
Journal title
ISSN journal
03759474
Volume
606
Issue
3-4
Year of publication
1996
Pages
357 - 406
Database
ISI
SICI code
0375-9474(1996)606:3-4<357:TAOTQS>2.0.ZU;2-2
Abstract
Based on the diquark cluster model, the widths and branching ratios of the q(2) q(2) states, which consist of u and d quarks, as well as the mass spectrum are predicted. The mass spectrum is calculated using a mass formula in which all of the parameters are determined using known baryon masses and experimental data for dibaryon resonances: no free parameters remain. The widths and branching ratios are also estimated by the use of an approximated formula in which experimental data for t he masses and widths of the meson <q(q)over bar> are used and again no free parameters remain. It is shown that the present model can explai n in a satisfactory fashion the masses and the widths of many exotic m esons discovered recently in <s(s)over bar>-depleted reactions.