Electromagnetic form factors of the Λ(1405) in (2+1)-flavour lattice QCD
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Date
2012
Authors
Menadue, B.
Kamleh, W.
Leinweber, D.
Mahbub, M.
Owen, B.
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Conference paper
Citation
PoS (Lattice 2012); 178
Statement of Responsibility
Benjamin J. Menadue, Waseem Kamleh, Derek B. Leinweber, M. Selim Mahbub, Benjamin J. Owen
Conference Name
International Symposium on Lattice Field Theory (30th : 2012 : Cairns, Australia)
Abstract
The Λ(1405) is unusual in that it lies surprisingly low in mass. At 1405.1 MeV, it lies lower than the lowest-lying odd-parity state of the nucleon, even though it contains a valence strange quark. We build on our recent success in isolating this otherwise elusive state in lattice QCD using correlation matrix techniques coupled with source and sink smearing, and present first results from our world-first calculation of the electromagnetic form factors of this unusual state. We use the PACS-CS (2+1)-flavour full-QCD ensembles, available through the ILDG.
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