Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/74350
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DC Field | Value | Language |
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dc.contributor.author | Bali, G. | - |
dc.contributor.author | Collins, S. | - |
dc.contributor.author | Gockeler, M. | - |
dc.contributor.author | Horsley, R. | - |
dc.contributor.author | Nakamura, Y. | - |
dc.contributor.author | Nobile, A. | - |
dc.contributor.author | Pleiter, D. | - |
dc.contributor.author | Rakow, P. | - |
dc.contributor.author | Schafer, A. | - |
dc.contributor.author | Schierholz, G. | - |
dc.contributor.author | Zanotti, J. | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | Physical Review Letters, 2012; 108(22):222001:1-222001:5 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.issn | 1079-7114 | - |
dc.identifier.uri | http://hdl.handle.net/2440/74350 | - |
dc.description.abstract | We compute the strangeness and light-quark contributions Δs, Δu, and Δd to the proton spin in nf=2 lattice QCD at a pion mass of about 285 MeV and at a lattice spacing a≈0.073 fm, using the nonperturbatively improved Sheikholeslami-Wohlert Wilson action. We carry out the renormalization of these matrix elements, which involves mixing between contributions from different quark flavors. Our main result is the small negative value ΔsMS̅ (√7.4 GeV)=-0.020(10)(4) of the strangeness contribution to the nucleon spin. The second error is an estimate of the uncertainty, due to the missing extrapolation to the physical point. | - |
dc.description.statementofresponsibility | Gunnar S. Bali, Sara Collins, Meinulf Göckeler, Roger Horsley, Yoshifumi Nakamura, Andrea Nobile, Dirk Pleiter, P. E. L. Rakow, Andreas Schäfer, Gerrit Schierholz, and James M. Zanotti. (QCDSF Collaboration) | - |
dc.language.iso | en | - |
dc.publisher | American Physical Soc | - |
dc.rights | © 2012 American Physical Society | - |
dc.source.uri | http://dx.doi.org/10.1103/physrevlett.108.222001 | - |
dc.subject | QCDSF Collaboration | - |
dc.title | Strangeness contribution to the proton spin from lattice QCD | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1103/PhysRevLett.108.222001 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/FT100100005 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/FT100100005 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Zanotti, J. [0000-0002-3936-1597] | - |
Appears in Collections: | Aurora harvest Chemistry and Physics publications |
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File | Description | Size | Format | |
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hdl_74350.pdf | Published version | 157.82 kB | Adobe PDF | View/Open |
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