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  • QCD sum rules - Wikipedia
    The sum rule obtained in this way allows to calculate observable characteristics of the hadronic ground state Inversely, the parameters of QCD such as quark masses and vacuum condensate densities can be extracted from sum rules which have experimentally known hadronic parts
  • Operator Product Expansion in QCD | Springer Nature Link
    The second of the two pillars of the QCDSR method is the Operator Product Expansion (OPE) of current correlators at short distances, beyond perturbation theory This allows for a current correlator to be written in terms of QCD degrees of freedom, starting with its perturbative expansion, followed by non-perturbative terms
  • [2410. 14382] 𝐷⁰⁢ (𝐷⁰)̄ mixing from nonlocal condensate contributions
    An analysis of local vacuum condensate contributions to charm mixing was carried out by [19], focusing on the leading chirality breaking term of the diquark condensate We extend the study of their (unpublished) work by incorporating models for the nonlocal QCD condensate expansion, and also including higher-dimensional condensates (both mixed and four-quark), which may provide significant
  • q¯q condensate for light quarks beyond the chiral limit
    The aim of this Letter is to extract from this dependence the behaviour of the value of the q q condensate beyond the limit of vanishing quark mass The interest in the value of such a condensate arises in the context of QCD sum-rules There the Operator Product Expansion (OPE) is used to approximate the short distance behaviour of QCD
  • Masses and decay widths of scalar D0 and Ds0 mesons in a strange . . .
    Masses and decay constants of scalar D0 and Ds0 mesons in isospin asymmetric strange hadronic matter at finite temperature are evaluated using QCD sum rules and a chiral SU(3) model In-medium light quark condensates, ̄uu ρB and ̄dd ρB ; strange quark condensates, αs ̄ss ρB ; and gluon condensates, π Ga μνGaμν , needed in QCD ρB sum rule calculations are evaluated using a chiral
  • Recent progress in QCD condensate evaluations and sum rules
    Special focus is laid on the progress made in the evaluation of the QCD condensates, which are the input of all QCD sum rule calculations, and for which much new information has become available through high precision lattice QCD calculations, chiral perturbation theory and experimental measurements
  • QCD Sum Rules | Quantum Accuracy, Predictions Analysis
    By considering contributions from various quark and gluon condensates, QCD Sum Rules provide a comprehensive picture of hadronic properties This includes predictions about mass, decay constants, and form factors of hadrons, which are crucial for understanding the strong force
  • (PDF) QCD SUM RULES, A MODERN PERSPECTIVE - Academia. edu
    It would be important to update the sum rule determination of the charm quark mass, including the O (α2s ) perturbative correction 58 and the three- and four-gluon condensate contributions 18 In recent years, there has been an impressive progress in the determina- tion of the b-quark mass, from the analysis of the two-point correlation
  • QCD Sum Rules: Selected Topics - univie. ac. at
    2 Vacuum Condensates and Sum Rules SVZ parametrize the nonperturbative aspects of QCD, the QCD-vacuum, by so-called vacuum condensates: the quark- and gluon condensates The mathematical procedure is an operator product expansion for the polarization tensor which is related to experiment via some kind of dispersion relations - the sum rules (for more comprehensive reviews see Ref [5])
  • INTRODUCTION INTO QCD SUM RULE APPROACH
    In these lectures, I describe basic techniques of the QCD sum rule approach The basic concepts of the approach are introduced using a simple model of quantum- mechanical oscillator in 2+1 dimensions Then I discuss their eld-theoretical extension and the construction of the operator product expansion for current cor- relators in QCD The calculation of static parameters is illustrated on the





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