Diquark effects in light baryon correlators from lattice QCD

Details Diquark effects in light baryon correlators from lattice QCD Diquark effects in light baryon correlators from lattice QCD

2007-12-03

arxiv.org/abs/0712.0254v1

Phys.Rev.D77:034505,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 11 figures

Scientific paper

10.1103/PhysRevD.77.034505

We study the role of diquarks in light baryons through point to point baryon correlators. We contrast results from quenched simulations with ones with two flavors of dynamical overlap fermions. The scalar, pseudoscalar and axial vector diquarks are combined with light quarks to form color singlets. The quenched simulation shows large zero mode effects in correlators containing the scalar and pseudoscalar diquark. The two scalar diquarks created by gamma_5 and gamma_0gamma_5 lead to different behavior in baryon correlators, showing that the interaction of diquarks with the third light quark matters: we do not see an isolated diquark. In our quark mass range, the scalar diquark created by gamma_5 seems to play a greater role than the others.

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