Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2012-01-17
Physics
High Energy Physics
High Energy Physics - Lattice
21 pages, 10 figs
Scientific paper
We explore the interactions of two strangeness -3 baryons in multiple spin channels with lattice QCD. This system provides an ideal laboratory for exploring the interactions of multi-baryon systems with minimal dependence on light quark masses. Model calculations of the two-$\Omega^-$ system in two previous works have obtained conflicting results, which can be resolved by lattice QCD. The lattice calculations are performed using two different volumes with $L\sim2.5$ and 3.9 fm on anisotropic clover lattices at $m_\pi \sim 390$ MeV with a lattice spacing of $a_s \sim 0.123$ fm in the spatial direction and $a_t\sim{a}_s/3.5$ in the temporal direction. Using multiple interpolating operators from a non-displaced source, we present scattering information for two ground state $\Omega^-$ baryons in both the S=0 and S=2 channels. For S=0, $k\cot\delta$ is extracted at two volumes, which lead to an extrapolated scattering length of $a^{\Omega\Omega}_{S=0}=0.16 \pm 0.22 \ \text{fm}$, indicating a weakly repulsive interaction. Additionally, for S=2, two separate highly repulsive states are observed. We also present results on the interactions of the excited strangeness -3, spin-1/2 states with the ground spin-3/2 states for the spin-1 and spin-2 channels. Results for these interactions are consistent with attractive behavior.
Buchoff Michael I.
Luu Thomas C.
Wasem Joseph
No associations
LandOfFree
S-wave scattering of strangeness -3 baryons 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 S-wave scattering of strangeness -3 baryons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and S-wave scattering of strangeness -3 baryons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-98111