Estimation of dibaryon (ΩΩ)Jπ=0+ yields at RHIC energies

(ΩΩ)0+ dibaryon productions in central Au+Au collisions at RHIC energy √ sNN = 130GeV

Dibaryon systems in the quark mass density- and temperature-dependent model

Using the quark mass densityand temperature-dependent model, we have studied the properties of the dibaryon systems. The binding energy, radius and mean lifetime of (ΩΩ)0+and (ΩΞ ) are given. We find the dibaryons (ΩΩ)0+ , (ΩΞ ), (ΩΞ0) are metastable at zero temperature, but the strong decay channel for (ΩΩ)0+ opens when temperature arrives at 129.3 MeV. It is shown that our results are in good...

l - th / 9 70 60 50 v 1 1 9 Ju n 19 97 Can only flavor - nonsinglet H dibaryons be stable against strong decays ?

Using the QCD sum rule approach, we show that the flavor-nonsinglet H dibaryon states with Jπ = 1+, Jπ = 0+, I=1 (27plet) are nearly degenerate with the Jπ = 0+, I=0 singlet H0 dibaryon, which has been predicted to be stable against strong decay, but has not been observed. Our calculation, which does not require an instanton correction, suggests that the H0 is slightly heavier than these flavor...

Dibaryon Systems in Chiral SU ( 3 ) Quark Model 1

The possible candidates of S−wave dibaryons with various strange numbers are studied under the chiral SU(3) quark model. It is shown that there are three types of baryon-baryon bound states. The states of the first type are called deuteron-like states. If chiral fields can provide enough attraction between interacting baryons, these systems, such as [ΞΩ − Ξ are named as ∆∆-like states. Due to t...

Can Doubly Strange Dibaryon Resonances be Discovered at RHIC?

The baryon-baryon continuum invariant mass spectrum generated from ultrarelativistic nucleus + nucleus collision data may reveal the existence of doubly-strange dibaryons not stable against strong decay if they lie within a few MeV of threshold. Furthermore, since the dominant component of these states is a superposition of two color-octet clusters which can be produced intermediately in a colo...