arXiv subjects

SCALAR Collaboration

Publications and source records attributed to SCALAR Collaboration.

2 recordsLinked to original sources

arXiv2003

Scalar Mesons in Lattice QCD

We explore whether "f$_{0}$(600) or $σ$" exists as a pole in QCD, by a full lattice QCD simulation on the $8^{3} \times 16$ lattice using the plaquette action and Wilson fermions. It is shown that a low-mass $σ$ pole exists owing to the disconnected diagram of the meson propagator. A discussion is given on the physical content of the $σ$.

hep-ph↗

arXiv2001

I=0 scalar channel

Using lattice QCD with dynamical Wilson fermions, we study I=0 and $J^{P}=0^{+}$ channel which is constructed by $\frac{1}{\sqrt{2}}(\bar{u}u+\bar{d}d)|0>$, in order to search for the $σ$ meson. Our preliminary result shows that the connected and disconnected diagrams contribute to the $σ$ meson propagator in the same order.

hep-lat↗