Results 81 to 90 of about 2,102 (188)
Studies of Parity Violation in Atoms
Annalen der Physik, Volume 537, Issue 2, February 2025.This article provides an overview of atomic parity violation (APV), emphasizing its role in testing the Standard Model and probing new physics. The review discusses manifestations of APV, including nuclear‐spin‐independent and dependent effects, and explores isotopic comparison as a method for precision measurements.
Stefanos Nanos +2 more
wiley +1 more source
Transition to Perturbative QCD
Journal of Physics: Conference Series, 2011 We review the Jefferson Lab program concerning the interplay between hadronic and underlying quark degrees of freedom in exclusive reactions. Much of the program was initially based on predictions from perturbative QCD (pQCD) concerning scaling of reaction cross sections, helicity conservation, and asymptotic behavior of form factors.
R Gilman, R J Holt, P Stoler
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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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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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On the description of exotic hadron states within QCD sum rules
EPJ Web of Conferences, 2017 Revisiting the QCD sum-rule description of exotic hadron states, we argue that, in order to arrive at trustable analyses of, for instance, strong decay widths of multiquarks, it is inevitable to adopt the QCD sum-rule approach beyond the leading ...
Lucha Wolfgang, Melikhov Dmitri
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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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Analytic Perturbation Theory for QCD Observables
Theoretical and Mathematical Physics, 2001 The connection between ghost-free formulations of RG-invariant perturbation theory in the both Euclidean and Minkowskian regions is studied. Our basic tool is the "double spectral representation", similar to definition of Adler function, that stems from first principles of local QFT.
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Factorization formula connecting the Λ b LCDA in QCD and boosted HQET
Journal of High Energy PhysicsLight-cone distribution amplitudes (LCDAs) are essential to precision phenomenology in heavy baryon decays. In this work, we derive a factorization formula connecting the leading-twist QCD LCDA to the boosted HQET LCDA of the Λ b baryon in the peak ...
Yu-Ji Shi, Jun Zeng
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Non Perturbative Effects in QCD
, 2003 8 pages, 5 figures. Talk at the International Workshop on QCD: QCD@Work 2003 - Conversano (Italy) 14-18 June 2003 (eConf C030614)
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