期刊
NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS
卷 258, 期 -, 页码 177-180出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysbps.2015.01.038
关键词
nonperturbative methods; low energy QCD; dispersion relations; tau lepton hadronic decay
The dispersive approach to QCD, which extends the applicability range of perturbation theory towards the infrared domain, is developed. This approach properly accounts for the intrinsically nonperturbative constraints, which originate in the low-energy kinematic restrictions on pertinent strong interaction processes. The dispersive approach proves to be capable of describing OPAL (update 2012) and ALEPH (update 2014) experimental data on inclusive tau lepton hadronic decay in vector and axial-vector channels in a self-consistent way.
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