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Title: Process-independent strong running coupling

Abstract

Here, we unify two widely different approaches to understanding the infrared behavior of quantum chromodynamics (QCD), one essentially phenomenological, based on data, and the other computational, realized via quantum field equations in the continuum theory. Using the latter, we explain and calculate a process-independent running-coupling for QCD, a new type of effective charge that is an analogue of the Gell-Mann–Low effective coupling in quantum electrodynamics. The result is almost identical to the process-dependent effective charge defined via the Bjorken sum rule, which provides one of the most basic constraints on our knowledge of nucleon spin structure. As a result, this reveals the Bjorken sum to be a near direct means by which to gain empirical insight into QCD's Gell-Mann–Low effective charge.

Authors:
 [1];  [2];  [3];  [2];  [4]
  1. European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT*) and Fondazione Bruno Kessler Villa Tambosi, Villazzano (Trentino) (Italy)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Univ. of Valencia and CSIC, Valencia (Spain)
  4. Univ. of Huelva, Huelva (Spain)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1400401
Alternate Identifier(s):
OSTI ID: 1394697
Grant/Contract Number:  
AC02-06CH11357; FPA2014-53631-C-1-P; FPA2014-53631-C-2-P; SEV-2014-0398
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Binosi, Daniele, Mezrag, Cedric, Papavassiliou, Joannis, Roberts, Craig D., and Rodriguez-Quintero, Jose. Process-independent strong running coupling. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.96.054026.
Binosi, Daniele, Mezrag, Cedric, Papavassiliou, Joannis, Roberts, Craig D., & Rodriguez-Quintero, Jose. Process-independent strong running coupling. United States. doi:10.1103/PhysRevD.96.054026.
Binosi, Daniele, Mezrag, Cedric, Papavassiliou, Joannis, Roberts, Craig D., and Rodriguez-Quintero, Jose. Mon . "Process-independent strong running coupling". United States. doi:10.1103/PhysRevD.96.054026. https://www.osti.gov/servlets/purl/1400401.
@article{osti_1400401,
title = {Process-independent strong running coupling},
author = {Binosi, Daniele and Mezrag, Cedric and Papavassiliou, Joannis and Roberts, Craig D. and Rodriguez-Quintero, Jose},
abstractNote = {Here, we unify two widely different approaches to understanding the infrared behavior of quantum chromodynamics (QCD), one essentially phenomenological, based on data, and the other computational, realized via quantum field equations in the continuum theory. Using the latter, we explain and calculate a process-independent running-coupling for QCD, a new type of effective charge that is an analogue of the Gell-Mann–Low effective coupling in quantum electrodynamics. The result is almost identical to the process-dependent effective charge defined via the Bjorken sum rule, which provides one of the most basic constraints on our knowledge of nucleon spin structure. As a result, this reveals the Bjorken sum to be a near direct means by which to gain empirical insight into QCD's Gell-Mann–Low effective charge.},
doi = {10.1103/PhysRevD.96.054026},
journal = {Physical Review D},
number = 5,
volume = 96,
place = {United States},
year = {2017},
month = {9}
}

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Cited by: 31 works
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    Drawing insights from pion parton distributions
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    Symmetry, symmetry breaking, and pion parton distributions
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