STI Publications - View Publication #9608
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Publication Information
| Title | Nucleon, $\Delta$ and $\Omega$ excited states in $N_f=2+1$ lattice QCD | ||||
| Abstract | The energies of the excited states of the Nucleon, $\Delta$ and $\Omega$ are computed in lattice QCD, using two light quarks and one strange quark on anisotropic lattices. The calculation is performed at three values of the light quark mass, corresponding to pion masses $m_{\pi}$ = 392(4), 438(3) and 521(3) MeV. We employ the variational method with a large basis of interpolating operators enabling six energies in each irreducible representation of the lattice to be distinguished clearly. We compare our calculation with the low-lying experimental spectrum, with which we find reasonable agreement in the pattern of states. The need to include operators that couple to the expected multi-hadron states in the spectrum is clearly identified. | ||||
| Author(s) | John Bulava, Robert Edwards, Eric Engelson, Balint Joo, Huey-Wen Lin, Colin Morningstar, David Richards, Steve Wallace | ||||
| Publication Date | July 2010 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Theory & Comp Physics / THEORY CENTER / THEORY CENTER | ||||
| Funding Source | |||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review D |
| Refereed | Yes |
| Volume | 82 |
| Issue | 1 |
| Page(s) | 014507 |
Attachments/Datasets/DOI Link
| Document(s) |
1004.5072v2.pdf
(STI Document)
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| DOI Link | |
| Dataset(s) | (none) |
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