{
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    "updated": "2022-03-04T10:52:04Z", 
    "id": "oai:repo.scoap3.org:43009", 
    "sets": [
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  }, 
  "authors": [
    {
      "raw_name": "Jian Liang", 
      "affiliations": [
        {
          "country": "USA", 
          "value": "Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA"
        }
      ], 
      "surname": "Liang", 
      "given_names": "Jian", 
      "full_name": "Liang, Jian"
    }, 
    {
      "raw_name": "Yi-Bo Yang", 
      "affiliations": [
        {
          "country": "USA", 
          "value": "Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA"
        }
      ], 
      "surname": "Yang", 
      "given_names": "Yi-Bo", 
      "full_name": "Yang, Yi-Bo"
    }, 
    {
      "raw_name": "Terrence Draper", 
      "affiliations": [
        {
          "country": "USA", 
          "value": "Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA"
        }
      ], 
      "surname": "Draper", 
      "given_names": "Terrence", 
      "full_name": "Draper, Terrence"
    }, 
    {
      "raw_name": "Ming Gong", 
      "affiliations": [
        {
          "country": "China", 
          "value": "Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China"
        }
      ], 
      "surname": "Gong", 
      "given_names": "Ming", 
      "full_name": "Gong, Ming"
    }, 
    {
      "raw_name": "Keh-Fei Liu", 
      "affiliations": [
        {
          "country": "USA", 
          "value": "Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA"
        }
      ], 
      "surname": "Liu", 
      "given_names": "Keh-Fei", 
      "full_name": "Liu, Keh-Fei"
    }
  ], 
  "titles": [
    {
      "source": "APS", 
      "title": "Quark spins and anomalous Ward identity"
    }
  ], 
  "dois": [
    {
      "value": "10.1103/PhysRevD.98.074505"
    }
  ], 
  "publication_info": [
    {
      "journal_volume": "98", 
      "journal_title": "Physical Review D", 
      "material": "article", 
      "journal_issue": "7", 
      "year": 2018
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
  "acquisition_source": {
    "date": "2020-06-29T15:30:24.770514", 
    "source": "APS", 
    "method": "APS", 
    "submission_number": "bca49440b8c511eaad8602163e01809a"
  }, 
  "page_nr": [
    20
  ], 
  "license": [
    {
      "url": "https://creativecommons.org/licenses/by/4.0/", 
      "license": "CC-BY-4.0"
    }
  ], 
  "copyright": [
    {
      "statement": "Published by the American Physical Society", 
      "year": "2018"
    }
  ], 
  "control_number": "43009", 
  "collaborations": [
    {
      "value": "\u03c7QCD Collaboration"
    }
  ], 
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      "checksum": "md5:2f4b42602d9a478f4869a068775f4754", 
      "filetype": "pdf", 
      "bucket": "5a8d63f7-8dce-4938-ab08-3f9c0888edea", 
      "version_id": "54218b46-ecb1-4d0b-98dc-1a8dba2a6e2f", 
      "key": "10.1103/PhysRevD.98.074505.pdf", 
      "size": 1036164
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      "size": 364507
    }
  ], 
  "record_creation_date": "2018-10-09T17:30:20.235710", 
  "collections": [
    {
      "primary": "HEP"
    }, 
    {
      "primary": "Citeable"
    }, 
    {
      "primary": "Published"
    }
  ], 
  "arxiv_eprints": [
    {
      "categories": [
        "hep-ph", 
        "hep-lat"
      ], 
      "value": "1806.08366"
    }
  ], 
  "abstracts": [
    {
      "source": "APS", 
      "value": "We calculate the intrinsic quark spin contribution to the total proton spin using overlap valence quarks on three ensembles of <math><mn>2</mn><mo>+</mo><mn>1</mn></math>-flavor RBC/UKQCD domain-wall configurations with different lattice spacings. The lowest pion mass of the ensembles is around 171 MeV, which is close to the physical point. With overlap fermions and a topological charge derived from the overlap operator, we verify the anomalous Ward identity between nucleon states with momentum transfer. Both the connected and the disconnected insertions of the axial-vector current are calculated. For the disconnected-insertion part, the cluster-decomposition error reduction technique is utilized for the lattice with the largest volume and the error can be reduced by 10%\u201340%. Nonperturbative renormalization is carried out and the final results are all reported in the <math><mrow><mover><mrow><mi>MS</mi></mrow><mrow><mo>\u00af</mo></mrow></mover></mrow></math> scheme at 2 GeV. We determine the total quark spin contribution to the nucleon spin to be <math><mrow><mi>\u0394</mi><mi>\u03a3</mi><mo>=</mo><mn>0.405</mn><mo>(</mo><mn>25</mn><mo>)</mo><mo>(</mo><mn>37</mn><mo>)</mo></mrow></math>, which is consistent with the recent global fitting result of experimental data. The isovector axial coupling we obtain in this study is <math><mrow><msubsup><mrow><mi>g</mi></mrow><mrow><mi>A</mi></mrow><mrow><mn>3</mn></mrow></msubsup><mo>=</mo><mn>1.254</mn><mo>(</mo><mn>16</mn><mo>)</mo><mo>(</mo><mn>30</mn><mo>)</mo></mrow></math>, which agrees well with the experimental value of 1.2723(23)."
    }
  ], 
  "imprints": [
    {
      "date": "2018-10-09", 
      "publisher": "APS"
    }
  ]
}