Light-quark mass spectrum in quantum chromodynamics
نویسندگان
چکیده
منابع مشابه
Light-front Quantum Chromodynamics
Light-front quantum chromodynamics may lead to an accurate constituent approximation for the low-energy properties of hadrons. This requires a cutoff that violates explicit gauge invariance and Lorentz covariance, leading to the calculation of a renormalized QCD hamiltonian using a similarity renormalization group. Renormalization repairs broken symmetries, and in light-front field theory it mo...
متن کاملHeavy-quark Physics in Quantum Chromodynamics’
Heavy quarks can expose new symmetries and novel phenomena in QCD not apparent in ordinary hadronic systems. In these lectures I discuss the use of effective-Lagrangian and light-cone Fock methods to analyze exclusive heavy hadron decays such as Y + pp and B + XT, and also to derive effective SchrGdinger and Dirac equations for heavy quark systems. Two contributions to the heavy quark structure...
متن کاملMass Gap in Quantum Chromodynamics
We present a heuristic argument in support of the assertion that QCD will exhibit a mass gap, if the Callan-Symanzik function β(g) obeys the inequality β(g) < 0, for all g > 0. We begin by summarizing the standard lore attributed to QCD: (A) QCD must have a mass gap, i.e., every excitation above the vacuum state must have energy > △, where △ is a positive constant. The key idea that infrared sl...
متن کاملQuark Confinement Physics from Quantum Chromodynamics
We show the construction of the dual superconducting theory for the confinement mechanism from QCD in the maximally abelian (MA) gauge using the lattice QCDMonte Carlo simulation. We find that essence of infrared abelian dominance is naturally understood with the off-diagonal gluon mass moff ≃ 1.2GeV induced by the MA gauge fixing. In the MA gauge, the off-diagonal gluon amplitude is forced to ...
متن کاملSpherical quantum chromodynamics of heavy-quark systems.
We propose a model for Quantum Chromodynamics, obtained by ignoring the angular dependence of the gluon fields, which could qualitatively describe systems containing one heavy quark. This leads to a two dimensional gauge theory which has chiral symmetry and heavy quark symmetry. We show that in a light cone formalism, the Hamiltonian of this spherical QCD can be expressed entirely in terms of c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 1979
ISSN: 0556-2821
DOI: 10.1103/physrevd.19.2070