Speaker
Dr
Alexander Nesterenko
(Joint Institute for Nuclear Research)
Description
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
recently updated ALEPH and OPAL experimental data on inclusive
tau lepton hadronic decay in vector and axial-vector channels in
a self-consistent way. The vacuum polarization function obtained
within developed approach appears to be in a good agreement with
relevant low-energy lattice simulation data.
[1] A.V.Nesterenko,
"Dispersive approach to QCD and inclusive tau lepton hadronic decay".
Phys. Rev. D88, 056009 (2013); arXiv:1306.4970[hep-ph].
[2] M.Baldicchi, A.V.Nesterenko, G.M.Prosperi, and C.Simolo,
"QCD coupling below 1 GeV from quarkonium spectrum".
Phys. Rev. D77, 034013 (2008); arXiv:0705.1695[hep-ph].
[3] A.V.Nesterenko,
"Inclusive tau lepton decay: the effects due to hadronization".
PoS ConfinementX, 350 (2013); arXiv:1302.0518[hep-ph].
[4] A.V.Nesterenko,
"Hadronic effects in low-energy QCD: inclusive tau lepton decay".
Nucl. Phys. B (Proc. Suppl.) 234, 199 (2013); arXiv:1209.0164[hep-ph].
Author
Dr
Alexander Nesterenko
(Joint Institute for Nuclear Research)
