Quark-antiquark bound states and the Breit equation
UNSPECIFIED (2004) Quark-antiquark bound states and the Breit equation. ACTA PHYSICA POLONICA B, 35 (10). pp. 2329-2365. ISSN 0587-4254Full text not available from this repository.
A non-covariant but approximately relativistic two-body wave equation (Breit equation) describing the quantum mechanics of two fermions interacting with one another through a potential containing scalar, pseudoscalar and vector parts is presented. After expressing the sixteen component two-body wavefunction in terms of a radial and an angular function by means of the multipole expansion, the initial equation can be reduced into a set of sixteen radial, equations which, in turn, can be classified in accordance to the parity and the state of the wavefunctions involved. The adequacy of the reduced equations in describing real problems is discussed by applying the theory to QCD problems and the calculation of the energies of bound states of quark-antiquark systems is performed to order alpha(4). We show that bound states of heavy quarks can be,described adequately by the Breit. equation for a funnel interaction between the particles.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||ACTA PHYSICA POLONICA B|
|Publisher:||ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS|
|Number of Pages:||37|
|Page Range:||pp. 2329-2365|
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