Strangeness-3dibaryons

Abstract

We demonstrate, using two different quark models of hadrons, that there should be isodoublets of dibaryons with strangeness -3 and 7 = 1,2, which are stable with respect to strong decay.

Extension of fractional parentage expansion to the nonrelativistic and relativisticSUf(3) dibaryon calculations

“…(6) are SU(18) ⊃ SU c (3) × SU(6) and SU(6) ⊃ SU f (3) × SU σ (2) isoscalar factors respectively and the third one is SU f (3) ⊃ SU τ (2) × U Y (1) isoscalar factor. All these isoscalar factors can be found in Chen's book [8b].…”

“…To take into account the mutual distortion or the internal orbital excitation of the interacting baryons when they are near one another, the delocalized single quark state l(r) is used for baryon B 1 (B 2 ) [2,6,7] …”

“…Twobody confinement may be a reasonable approximation inside a hadron but not for the interaction between quarks in two color singlet hadrons [5]. Another possible missed general feature is that the quark, originally confined in a single hadron, may tunnel (or percolate) to the other hadron when two hadrons are close together [6]. In the potential model approach, the internal motion of the interacting hadrons is assumed to be unchanged.…”

Study of Hyperon Interaction from Heavy-Ion Collisions using STAR Detector at RHIC

“…The lifetime of hypernucleus depends on the strength of the YN interaction and precise measurement of it would provide direct information about the YN interaction strength. Among the dibaryon states, the NΩ state with strangeness = -3, J P = 2 + and I = 1 2 is an interesting candidate [35]. Calculations from QCD inspired models predict the binding energy of NΩ between 10-110 MeV [36,37].…”

StrangenessS=−1hyperon-nucleon scattering in covariant chiral effective field theory

“…(The existence of exotic dibaryons, such as the H dibaryon [72] and the NΩ dibaryon [73], has received much attention but has not been firmly confirmed.) As a result, one needs to iterate at least the LO ChEFT potentials.…”