QCD sum rules
Multiquark-Adequate QCD Sum Rules: the Case of Flavour-Exotic Tetraquarks
... called QCD sum rules [9]. QCD sum rules represent a nonperturbative approach to bound states of quarks and gluons (the degrees of freedom of QCD) in form of analytic ...
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On properties of the exotic hadrons from QCD sum rules
... leading-order contribution is inconsistent. The common feature of all previous investigations of these decays by QCD sum rules (e.g., [24–27]) was the attempt to study tetraquark (and pentaquark) ...
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Charmonium spectrum at finite temperature from a Bayesian analysis of QCD sum rules
... The method of QCD sum rules, developed by Shifman et al. [10] more than thirty years ago, provides us with a tool for exploring the properties of hadrons not only in vacuum but also at finite ...
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New Unitary Relations between the QCD sum rules
... the QCD sum rules for ΣΛ transitions. Also for QCD SR’s with baryon distribution amplitudes the unitary relations are constructed, proved in a simple quark model and found to be consistent ...
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Decay Constants of Beauty Mesons from QCD Sum Rules
... The well-established procedures of QCD sum rules pave a straightforward path to extract observables: 1. Determine a reasonable Borel window, that is, an interval of the Borel parameter τ defined such ...
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Understanding the X(3872) with QCD sum rules
... The sum rules approach is based on the principle of duality. It consists in the assumption that the correlation function may be described at both quark and hadron lev- els. At the hadronic level (the ...
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The linear radial spectrum of scalar mesons from QCD sum rules in the planar limit
... rules lies near 1 GeV [6] and cannot be made significantly lighter within this method [10]. Our extension of the SVZ method leads thus to a new result. It is interesting to check whether a similar result appears ...
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Strong Isospin Breaking in Heavy-Meson Decay Constants: Employing Borelized QCD Sum Rules in Local-Duality Limit
... the QCD sum-rule machinery in the so-called local-duality shape to heavy–light mesons reveals that, as a consequence of the non-zero mass gap between up and down quarks, the leptonic decay constants of the ...
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Mass splitting of heavy-baryons from QCD sum rules
... rameters (quark masses and condensates), the uncertainty in Eq. (19) should be even bigger. Besides, there is not a precise criterium to determine the value of the parameter b To try to circumvent these problems, instead ...
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Evaluating chiral symmetry restoration through the use of sum rules
... using sum rules and the known behavior of condensates in medium to ascertain properties of the in-medium spectral functions have thus far been addressed (see, ...used QCD sum rules ...
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Heavy-Meson Decay Constants: QCD Sum-Rule Glance at Isospin Breaking
... QCD sum rules provide in analytic form the dependences of the properties of the hadrons currently under study on the basic parameters of QCD. This allows us to study the impact of the isospin ...
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Charmed Pseudoscalar and Vector Mesons: a Comprehensive QCD Sum-Rule View of Their Decay Constants
... QCD sum rules [1] are relations between features of hadrons—the bound states governed by the strong interactions—and the parameters of their underlying quantum field ...both QCD and hadron ...
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QCD propagators and vertices from lattice QCD (in memory of Michael Müller-Preußker)
... field theories supplemented with a gauge condition. In particular the problem of Gribov copies and its impact on gauge-variant propagators or Abelian observables was something he worked on every now and then. His studies ...
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On zero sum game formulation of non zero sum game
... They are the same as the equilibrium outputs of the oligopoly with Firm 1, 2 and 3. In this paper we presented a zero-sum game formulation of a non zero-sum n players game considering the n + 1-th player ...
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Resonances from lattice QCD
... Lattice QCD calculations are necessarily performed in a finite volume. This has multiple ramifi- cations to the theory. First, one cannot define asymptotic states and consequently one cannot readily access their ...
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On a sum analogous to Dedekind sum and its mean square value formula
... The main purpose of this paper is using the mean value theorem of Dirichlet L-functions to study the asymptotic property of a sum analogous to Dedekind sum, and give an interesting mean [r] ...
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Archeology and evolution of QCD
... [12], QCD [13], the electro-weak standard model [14–16], the necessary existence of charmed quarks [17] and the renormalizability of non-abelian gauge theories [18, ...
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Precision physics with QCD
... verification of QCD. A good understanding of the uncertainties associated with the di ff erent measure- ments is needed in order to appreciate the significance of this test, which must be then restricted to ...
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Chiral imbalance in QCD
... The dedicated experimental study of hadron correlations in non-central heavy-ion collisions at RHIC [4] and LHC [5] revealed a signal of the separation of electric charges predicted in [6] as a signature of local P- and ...
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Globalisation: zero sum game and positive sum game
... strategy. Financial markets have become more volatile, and ‘globalisation’ and ‘contagion’ have been a part of the story. What is the solution? Developing countries must have built-in stabilisers to check currency wars, ...
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