RT Journal Article
T1 Process-independent strong running coupling
A1 Binosi, Daniele
A1 Mezrag, Cédric
A1 Papavassiliou, J.
A1 Roberts, Craig D.
A1 Rodríguez Quintero, José
AB We unify two widely different approaches to understanding the infrared behaviour of quantumchromodynamics (QCD), one essentially phenomenological, based on data, and the other computa-tional, realised via quantum field equations in the continuum theory. Using the latter, we explainand calculate a process-independent running-coupling for QCD, a new type of effective charge thatis an analogue of the Gell-Mann–Low effective coupling in quantum electrodynamics. The result isalmost identical to the process-dependent effective charge defined via the Bjorken sum rule, whichprovides one of the most basic constraints on our knowledge of nucleon spin structure. This re-veals the Bjorken sum to be a near direct means by which to gain empirical insight into QCD’sGell-Mann–Low effective charge.
PB American Physical Society
SN 2470-0010
YR 2017
FD 2017-09
LK http://hdl.handle.net/10272/16068
UL http://hdl.handle.net/10272/16068
LA eng
NO Daniele Binosi, Cédric Mezrag, Joannis Papavassiliou, Craig D. Roberts, José Rodríguez Quintero. Process-independent strong running coupling. Physical Review D 96, 25 September 2017. ISSN: 2470-0010. DOI:https://doi.org/10.1103/PhysRevD.96.054026
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026