Low-lying ud anti-s anti-s configurations in a non-relativistic constituent quark model

Details Low-lying ud anti-s anti-s configurations in a non-relativistic constituent quark model Low-lying ud anti-s anti-s configurations in a non-relativistic constituent quark model

2007-07-03

arxiv.org/abs/0707.0399v1

J.Phys.G34:1771-1782,2007

Physics

Nuclear Physics

Nuclear Theory

17 pages, 1 figure

Scientific paper

10.1088/0954-3899/34/7/015

The energies of the low-lying isoscalar and isovector ud anti-s anti-s configurations with spin-parity J^P=0^+, 1^+, and 2^+ are calculated in a non-relativistic constituent quark model by use of the variational method. The contributions of various parts of the quark-quark interacting potentials including the s-channel interaction are investigated, and the effect of different forms of confinement potential is examined. The model parameters are determined by the same method as in our previous work, and they still can satisfactorily describe the nucleon-nucleon scattering phase shifts and the hyperon-nucleon cross sections. The parameters of the s-channel interaction are fixed by the masses of K and K^* mesons, for which the size parameter is taken to be two possible values. When it is chosen as the same as baryons', the numerical results show that the masses of all the ud anti-s anti-s configurations are higher than the corresponding meson-meson thresholds. But when the size parameter for the K and K^* mesons is adjusted to be smaller than that for the baryons, the ud anti-s anti-s configuration with I=0 and J^P=1^+ is found to lie lower than the K^*K^* threshold, furthermore, this state has a very small KK^* component and the interaction matrix elements between this state and KK^* is comparatively small, thus its coupling to the KK^* channel will consequently be weak and it might be regarded as a possible tetraquark candidate.

Affiliated with

Also associated with

No associations

Rating

Low-lying ud anti-s anti-s configurations in a non-relativistic constituent quark model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Low-lying ud anti-s anti-s configurations in a non-relativistic constituent quark model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-lying ud anti-s anti-s configurations in a non-relativistic constituent quark model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-179351