Hadronic contribution to the running QED coupling at the Z-boson mass scale
نویسندگان
چکیده
An update is described of a model independent method to determine the hadronic contribution QED running coupling at Zboson mass scale, ∆αHAD(M2 Z ). The major source uncertainty from light quark vector current correlator zero momentum. This substantially reduced using recently improved lattice QCD results for this correlator. result ) = 274.13(0.73) × 10−4
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ژورنال
عنوان ژورنال: Revista Mexicana De Fisica
سال: 2023
ISSN: ['0035-001X', '2683-2224']
DOI: https://doi.org/10.31349/revmexfis.69.020801