Results 11 to 20 of about 47,894 (240)

An effective field theory calculation of the QCD corrections to weak parameters [PDF]

open access: goldNuclear Physics B, 1991
In the standard model the parameters {rho} and M{sub W}{sup 2}/M{sub Z}{sup 2}cos{sup 2}{theta} are unity at tree level. They are protected against large corrections by the so-called custodial symmetry. We investigate the symmetry breaking effect of effect of mass splittings in fermion doublets.
Benjaḿın Grinstein, Mengyuan Wang
  +5 more sources

QCD corrections to large-mt electroweak effects in Δr. An effective field theory point of view [PDF]

open access: greenPhysics Letters B, 1995
By using effective field theory techniques for the standard model, we discuss the issue of what $ $ scale is the appropriate one in the QCD corrections to the large-$\mt$ electroweak contributions to $ r$. This needs the construction of an effective field theory below the top quark.
Santiago Peris
openalex   +3 more sources

Vacuum energy in the effective field theory of general relativity. II. Inclusion of fermions and a comment on the QCD contribution [PDF]

open access: hybridPhysical Review D, 2019
Recently in the framework of a two-loop order calculation for an effective field theory of scalar and vector fields interacting with the metric field we have shown that for the cosmological constant term which is fixed by the condition of vanishing vacuum energy the graviton remains massless and there exists a self-consistent effective field theory of ...
J. Gegelia, Ulf-G. Meißner
openalex   +4 more sources

Review of QCD phase diagram analysis using effective field theories

open access: yesHe jishu, 2023
The quantum chromodynamics (QCD) phase diagram is of great interest to researchers in the field of high energy nuclear physics. We review the present research status of several aspects of this topic.
DU Yilun   +5 more
doaj   +2 more sources

Density dependence of nucleon bag constant, radius and mass in an effective field theory model of QCD [PDF]

open access: greenNuclear Physics A, 2001
With the global color symmetry model (GCM) being extended to finite chemical potential, the density dependence of the bag constant, the total energy and the radius of a nucleon, as well as the quark condensate in nuclear matter are investigated. A maximal nuclear matter density for the existence of the bag with three quarks confined within is obtained.
Yu‐xin Liu, D. Gao, Hua Guo
openalex   +5 more sources

Unraveling the Structure of Hadrons with Effective Field Theories of QCD [PDF]

open access: gold, 2004
Effective Field theory is a powerful framework based on controlled expansions for problems with a natural separation of energy scales. This technique is particularly important for QCD, the theory of strong interactions, due to the vast diversity of phenomena that it describes.
Iain W. Stewart
openalex   +4 more sources

Conformal field theory analysis of the QCD Kondo effect [PDF]

open access: yesPhysical Review D, 2019
1+22 pages, 1 figure; discussion improved, refs ...
Kimura, Taro, Ozaki, Sho
openaire   +3 more sources

Resummation and renormalization of kinematical effects in inclusive P-wave quarkonium production

open access: yesJournal of High Energy Physics, 2023
We investigate the renormalization properties of the shape function formalism for inclusive production of P-wave heavy quarkonia, which arises from resumming a class of corrections coming from kinematical effects associated with the motion of the heavy ...
Hee Sok Chung
doaj   +1 more source

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