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          "value": "Dipartimento di Fisica e Astronomia, Universit\u00e0 di Padova, Istituto Nazionale Fisica Nucleare, Sezione di Padova, Via Marzolo 8, I-35131 Padova, Italy"
        }
      ], 
      "surname": "Laporta", 
      "email": "stefano.laporta@pd.infn.it", 
      "full_name": "Laporta, Stefano", 
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      "title": "High-precision four-loop mass and wave function renormalization in QED"
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      "primary": "Physics Letters B"
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      "value": "The 4-loop QED mass and wave function renormalization constants <math><msub><mrow><mi>Z</mi></mrow><mrow><mn>2</mn></mrow></msub></math> and <math><msub><mrow><mi>Z</mi></mrow><mrow><mi>m</mi></mrow></msub></math> have been evaluated in the on-shell subtraction scheme with 1100 digits of precision. We also worked out the coefficients of the five color structures of the QCD renormalization constants <math><msubsup><mrow><mi>Z</mi></mrow><mrow><mn>2</mn></mrow><mrow><mi>OS</mi></mrow></msubsup></math> and <math><msubsup><mrow><mi>Z</mi></mrow><mrow><mi>m</mi></mrow><mrow><mi>OS</mi></mrow></msubsup></math> which can be obtained from QED-like diagrams. The results agree with lower precision results available in the literature. Analytical fits were also obtained for all these quantities."
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