Results 101 to 110 of about 12,651 (236)
Perturbative and non-perturbative QCD
, 2006 In these lectures we give a concise introduction to the ideas of renormalon calculus in QED and QCD. We focus in particular on the example of the Adler D function of vacuum polarization, and on relations between perturbative renormalon ambiguities and corresponding non-perturbative Operator Product Expansion (OPE) ambiguities.
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APPROACHING THE FINAL STATE IN PERTURBATIVE QCD [PDF]
International Journal of Modern Physics A, 2003 Infrared safe differential cross-sections, such as event shape distributions, can be measured over wide kinematic ranges, from regions where fixed order calculations are adequate to regions where nonperturbative dynamics dominate. Such observables provide an ideal laboratory for the study of the transition between weak and strong coupling in quantum ...
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Nuclear shadowing effects on prompt photons at RHIC and LHC
, 2005 The transverse momentum distribution of prompt photons coming from the very early phase of ultrarelativistic heavy ion collisions for the RHIC and LHC energies is calculated by means of perturbative QCD.
Greiner, Walter +3 more
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Static and dynamic properties of the pion from continuum modelling of strong QCD [PDF]
, 2010 We present nonperturbative numerical solutions for the quark propagator Schwinger-Dyson equation (SDE) and pseudoscalar meson Bethe-Salpeter equation (BSE) at and beyond the rainbow-ladder truncation level of this system of equations.
Cobos-Martinez, Jesus Javier +1 more
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The transition from nonperturbative to perturbative QCD
, 2002 Anthony G. Williams, Frederic D.R. Bonnet, Patrick O. Bowman, Derek B.
Bonnet, F. +11 more
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From microscopic interactions to the dynamics of the fireball
EPJ Web of Conferences, 2014 .We discuss recent applications of the partonic perturbative QCD based cascade model BAMPS with focus on heavy-ion phenomenology in the hard and soft momentum range.
Bouras I. +8 more
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Quark and Gluon Form Factors at Three Loops in Perturbative QCD [PDF]
, 2009 We compute the quark and gluon form factors at up to three-loop order within massless perturbative Quantum Chromodynamics by studying the photon-quark-anti-quark vertex and the effective vertex of a Higgs boson and two gluons.
IKIZLERLI, NEHIR
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Studies of Light Scalar Particles and Dressed Gauge Propagators in QCD [PDF]
, 2010 The equations of QCD are widely believed to describe the properties of mesons, baryons and their hadronisation after hard interactions at particle accelerators such as the LHC.
WILSON, DAVID,JOHN, Wilson, David John
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Controlling quark mass determinations non-perturbatively in three-flavour QCD
EPJ Web of Conferences, 2017 The determination of quark masses from lattice QCD simulations requires a non-perturbative renormalization procedure and subsequent scale evolution to high energies, where a conversion to the commonly used MS¯$\overline {{\rm{MS}}} $ scheme can be safely
Campos Isabel +5 more
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Perturbative QCD in a non-perturbative vacuum
Physics Letters B, 1981 Abstract We propose a procedure for interpreting the presence of a background gluon field in the context of perturbative QCD. We expect our method to be useful when non-perturbative effects are significant but not completely dominant.
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