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Results 1 - 10
of
1,162
General Formalism and Applications.
, 810
"... The Stochastic Vacuum Model for QCD, proposed by Dosch and Simonov, is fused with a Worldline casting of the underlying theory, i.e. QCD. Important, nonperturbative features of the model are studied. In particular, contributions associated with the spin-field interaction are calculated and both the ..."
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the validity of the loop equations and of the Bianchi identity are explicitly demonstrated. As an application, a simulated meson-meson scattering problem is studied in the Regge kinematical regime. The process is modeled in terms of the “helicoidal ” Wilson contour along the lines introduced by Janik
An Analysis Based on the Stochastic Vacuum Model
, 810
"... Employing the Worldline casting of the Dosch-Simonov Stochastic Vacuum Model (SVM) for QCD, a simulated meson-meson scattering problem is studied in the Regge kinematical regime. The process is modelled in terms of the ‘helicoidal ’ Wilson contour first introduced by Janic and Peschanski in a relate ..."
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Employing the Worldline casting of the Dosch-Simonov Stochastic Vacuum Model (SVM) for QCD, a simulated meson-meson scattering problem is studied in the Regge kinematical regime. The process is modelled in terms of the ‘helicoidal ’ Wilson contour first introduced by Janic and Peschanski in a
Scattering of Glueballs and Mesons in Compact QED in 2 + 1 Dimensions
, 1994
"... We study glueball and meson scattering in compact QED 2+1 gauge theory in a Hamiltonian formulation and on a momentum lattice. We compute ground state energy and mass, and introduce a compact lattice momentumoperator for the computation of dispersion relations. Using a non-perturbative time-dependen ..."
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chromodynamics (QCD) is one of the most challenging problems of nuclear physics. Recently, hadron-hadron scattering lengths have been obtained from QCD 3+1 lattice simulations by studying the finite volume behavior of the energy of a two-particle state [1]. The ß \Gamma ß and the N \Gamma N scattering length has
Heavy-Light Mesons Scattering from Nucleons: Quark-Gluon and Meson Exchanges
"... Abstract. We investigate the scattering of heavy-light K and D mesons by nucleons at low energies. The short-distance part of the interaction is described by quark-gluon interchange and the long-distance part is described by a one-meson-exchange model that includes the contributions of vector (ρ, ω) ..."
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Abstract. We investigate the scattering of heavy-light K and D mesons by nucleons at low energies. The short-distance part of the interaction is described by quark-gluon interchange and the long-distance part is described by a one-meson-exchange model that includes the contributions of vector (ρ, ω
Scalar mesons on the Lattice 1
, 2005
"... The simulations of the light scalar mesons on the lattice are presented at the introductory level. The methods for determining the scalar meson masses are described. The problems related to some of these methods are presented and their solutions discussed. 1 ..."
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The simulations of the light scalar mesons on the lattice are presented at the introductory level. The methods for determining the scalar meson masses are described. The problems related to some of these methods are presented and their solutions discussed. 1
Meson Masses in Nuclear Matter
, 1996
"... Mass shifts ∆m of particles in nuclear matter relative to their vacuum values are considered. A general formula relating ∆m(E) (E is the particle energy) to the real part of the forward particle-nucleon scattering amplitude Ref(E) is presented and its applicability domain is formulated. The ρ-meson ..."
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Mass shifts ∆m of particles in nuclear matter relative to their vacuum values are considered. A general formula relating ∆m(E) (E is the particle energy) to the real part of the forward particle-nucleon scattering amplitude Ref(E) is presented and its applicability domain is formulated. The ρ-meson
Strings in meson and baryon physics
, 2008
"... The relativistic string with massive ends (the meson model) and four various string baryon models: q-qq, q-q-q, Y and ∆ are considered. In particular, the rotational motions for all these systems are applied to describing the leading Regge trajectories, and also the classical dynamics beyond the usu ..."
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. The analysis of the stability problem for the rotational motions for all mentioned string configurations shows that these motions for the Y and q-q-q models are unstable on the classical level. In various string models of hadrons the relativistic string simulates the strong interaction between quarks at large
Meson-Baryon Scattering in QCD2 for any Coupling
, 2003
"... Extending earlier work on strong-coupling meson-baryon scattering in QCD2, we derive the effective meson-baryon action for any value of the coupling constant, in the large-Nc limit. Colour degrees of freedom play an important role, and we show that meson-baryon scattering can be formulated as a rela ..."
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relativistic potential problem. We distinguish two cases that are non-trivial for unequal quark masses, and present the resulting equations for meson-baryon scattering amplitudes.
GW Meson Scattering on a Staggered Sea
, 2006
"... We discuss the structure of the NLO corrections to the chiral formulae for mesonic scattering processes in mixed action simulations using Ginsparg-Wilson valence quarks and staggered sea quarks. In particular, we show that the analytic contribution of the NLO chiral Lagrangian is the same as in QCD. ..."
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We discuss the structure of the NLO corrections to the chiral formulae for mesonic scattering processes in mixed action simulations using Ginsparg-Wilson valence quarks and staggered sea quarks. In particular, we show that the analytic contribution of the NLO chiral Lagrangian is the same as in QCD
Meson-induced correlations of nucleons in nuclear Compton scattering
, 1997
"... The non-resonant (seagull) contribution to the nuclear Compton amplitude at low energies is strongly influenced by nucleon correlations arising from meson exchange. We study this problem in a modified Fermi gas model, where nuclear correlation functions are obtained with the help of perturbation the ..."
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The non-resonant (seagull) contribution to the nuclear Compton amplitude at low energies is strongly influenced by nucleon correlations arising from meson exchange. We study this problem in a modified Fermi gas model, where nuclear correlation functions are obtained with the help of perturbation
Results 1 - 10
of
1,162
