Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/76502
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Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Boyle, P. | - |
dc.contributor.author | Debbio, L. | - |
dc.contributor.author | Wennekers, J. | - |
dc.contributor.author | Zanotti, J. | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | Physical Review D: Particles, Fields, Gravitation and Cosmology, 2010; 81(1):014504:1-014504:8 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.issn | 1550-2368 | - |
dc.identifier.uri | http://hdl.handle.net/2440/76502 | - |
dc.description.abstract | We have computed the SU(2) low-energy constant l₅ and the mass splitting between charged and neutral pions from a lattice QCD simulation of n(sub)f=2+1 flavors of domain wall fermions at a scale of a⁻¹=2.33 GeV. Relating l₅ to the S parameter in QCD we obtain a value of S(m(sub)H=120 GeV)=0.42(7), in agreement with previous determinations. Our result can be compared with the value of S from electroweak precision data which constrains strongly interacting models of new physics like technicolor. This work in QCD serves as a test for the methods to compute the S parameter with domain wall fermions in theories beyond the standard model. We also infer a value for the pion mass splitting in agreement with experiment. | - |
dc.description.statementofresponsibility | Peter A. Boyle, Luigi Del Debbio, Jan Wennekers, and James M. Zanotti (RBC and UKQCD Collaborations) | - |
dc.language.iso | en | - |
dc.publisher | American Physical Soc | - |
dc.rights | © 2010 The American Physical Society | - |
dc.source.uri | http://dx.doi.org/10.1103/physrevd.81.014504 | - |
dc.title | S parameter in QCD from domain wall fermions | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1103/PhysRevD.81.014504 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Zanotti, J. [0000-0002-3936-1597] | - |
Appears in Collections: | Aurora harvest 4 Chemistry and Physics publications |
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hdl_76502.pdf | Published version | 791.45 kB | Adobe PDF | View/Open |
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