Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10724898 | Physics Letters B | 2006 | 8 Pages |
Abstract
We propose that the broad 1ââ resonance structure recently discovered by BES in J/ÏâK+KâÏ0 is the P-wave excitation of a diquark-antidiquark bound state. This interpretation implies that there exists a negative parity, vector nonet. A rough estimate of the mass spectrum of the nonet is presented, and the prediction for the mass of X(1576) is consistent with the experimental data. The OZI allowed strong decays are studied, it can decay into two pseudoscalars or one pseudoscalar plus one vector meson. A crucial prediction is that X(1576) should dominantly decay into K+Kâ, KLKS, ÏÏ0. The observation of I3=1 or I3=â1 states which predominantly decays into strange mesons could provide another important test to our proposal. To search the charged I3=1 isospin partner of X(1576), careful search in J/ÏâK+KLÏâ, J/ÏâK+KSÏâ and J/ÏâÏÏ+Ïâ is suggested.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Gui-Jun Ding, Mu-Lin Yan,