Results 31 to 40 of about 99,149 (216)

Compatibility of a model for the QCD-Pomeron and chiral-symmetry breaking phenomenologies [PDF]

open access: yes, 1996
The phenomenology of a QCD-Pomeron model based on the exchange of a pair of non-perturbative gluons, i.e. gluon fields with a finite correlation length in the vacuum, is studied in comparison with the phenomenology of QCD chiral symmetry breaking, based ...
A.A Natale   +37 more
core   +2 more sources

Scalar coupling evolution in a non-perturbative QCD resummation scheme

open access: yesPhysics Letters B, 2015
We compute the Standard Model scalar coupling (λ) evolution in a particular QCD resummation scheme, where the QCD coupling becomes infrared finite due to the presence of a dynamically generated gluon mass, leading to the existence of a non-perturbative ...
J.D. Gomez, A.A. Natale
doaj   +1 more source

The Strong Coupling Constant from Hadron Structure Phenomenology

open access: yes, 2012
We present recent developments on the role of the running coupling constant at the intersection of perturbative and nonperturbative QCD. A number of experiments show a smooth transition from small to large scales given by the four-momentum transfer in ...
Courtoy, A., Liuti, Simonetta
core   +1 more source

Perturbative QCD

open access: yesAIP Conference Proceedings, 1982
The discussion includes general properties of QCD perturbation expansion, onia decays, Drell-Yan, higher twist, and some miscellaneous comments about .cap alpha./sub s/. 45 references. (GHT)
openaire   +3 more sources

Effective locality and gauge invariance

open access: yesEPJ Web of Conferences, 2018
A few years ago, based on standard functional manipulations, an unexpected property was proven to be satisfied by the fermionic Green's functions of QCD, and dubbed effective locality.
Grandou T.
doaj   +1 more source

MS renormalization of S-wave quarkonium wavefunctions at the origin

open access: yesJournal of High Energy Physics, 2020
We compute S-wave quarkonium wavefunctions at the origin in the MS ¯ $$ \overline{\mathrm{MS}} $$ scheme based on nonrelativistic effective field theories.
Hee Sok Chung
doaj   +1 more source

m‾c and m‾b from MBc and improved estimates of fBc and fBc(2S)

open access: yesPhysics Letters B, 2020
We extract (for the first time) the correlated values of the running masses m‾c and m‾b from MBc using QCD Laplace sum rules (LSR) within stability criteria where perturbative (PT) expressions at N2LO and non-perturbative (NP) gluon condensates at LO are
Stephan Narison
doaj   +1 more source

Soft-drop grooming for hadronic event shapes

open access: yesJournal of High Energy Physics, 2021
Soft-drop grooming of hadron-collision final states has the potential to significantly reduce the impact of non-perturbative corrections, and in particular the underlying-event contribution.
Jeremy Baron   +4 more
doaj   +1 more source

Inelastic J/psi and Upsilon hadroproduction [PDF]

open access: yes, 2004
We consider the prompt hadroproduction of J/psi, psi' and the Upsilon (1S,2S,3S) states caused by the fusion of a symmetric colour-octet two-gluon state and an additional gluon. The cross sections are calculated in leading-order perturbative QCD. We find
91   +30 more
core   +1 more source

Master integrals for two-loop QCD corrections to quark quasi PDFs

open access: yesJournal of High Energy Physics, 2020
We compute the master integrals for the two-loop QCD corrections to quark quasi parton distribution functions (PDFs) in the large momentum effective theory (LaMET). With a proper canonical basis, we derive the analytical results for the three families of
Long-Bin Chen, Wei Wang, Ruilin Zhu
doaj   +1 more source

Home - About - Disclaimer - Privacy