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Constraining beyond...
Constraining beyond the standard model nucleon isovector charges
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- Smail, R. E. (author)
- CSSM, Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
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- Batelaan, M. (author)
- CSSM, Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
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- Horsley, R. (author)
- School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
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- Nakamura, Y. (author)
- RIKEN Center for Computational Science, Kobe, Hyogo 650-0047, Japan
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- Perlt, H. (author)
- Institut für Theoretische Physik, Universität Leipzig, 04103 Leipzig, Germany
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- Pleiter, Dirk (author)
- KTH,Beräkningsvetenskap och beräkningsteknik (CST),Parallelldatorcentrum, PDC
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- Rakow, P. E.L. (author)
- Theoretical Physics Division, Department of Mathematical Sciences, University of Liverpool, Liverpool L69 3BX, United Kingdom
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- Schierholz, G. (author)
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
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- Stüben, H. (author)
- Universität Hamburg, Regionales Rechenzentrum, 20146 Hamburg, Germany
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- Young, R. D. (author)
- CSSM, Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia; Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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- Zanotti, J. M. (author)
- CSSM, Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
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(creator_code:org_t)
- American Physical Society (APS), 2023
- 2023
- English.
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In: Physical Review D. - : American Physical Society (APS). - 2470-0010 .- 2470-0029. ; 108:9
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
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- At the TeV scale, low-energy precision observations of neutron characteristics provide unique probes of novel physics. Precision studies of neutron decay observables are susceptible to beyond the Standard Model (BSM) tensor and scalar interactions, while the neutron electric dipole moment, dn, also has high sensitivity to new BSM CP-violating interactions. To fully utilize the potential of future experimental neutron physics programs, matrix elements of appropriate low-energy effective operators within neutron states must be precisely calculated. We present results from the QCDSF/UKQCD/CSSM Collaboration for the isovector charges gT, gA and gS of the nucleon, ς and Ξ baryons using lattice QCD methods and the Feynman-Hellmann theorem. We use a flavor symmetry breaking method to systematically approach the physical quark mass using ensembles that span five lattice spacings and multiple volumes. We extend this existing flavor-breaking expansion to also account for lattice spacing and finite volume effects in order to quantify all systematic uncertainties. Our final estimates of the nucleon isovector charges are gT=1.010(21)stat(12)sys,gA=1.253(63)stat(41)sys and gS=1.08(21)stat(03)sys renormalized, where appropriate, at μ=2 GeV in the MS¯ scheme.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Smail, R. E.
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Batelaan, M.
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Horsley, R.
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Nakamura, Y.
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Perlt, H.
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Pleiter, Dirk
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show more...
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Rakow, P. E.L.
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Schierholz, G.
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Stüben, H.
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Young, R. D.
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Zanotti, J. M.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
- Articles in the publication
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Physical Review ...
- By the university
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Royal Institute of Technology