Retardation corrections to the quarkonium spectrum and the form of the confinement kernel
We reconsider the problem of the retardation corrections to the quarkonium spectrum, due to some errors occurring in an earlier paper. We find that such corrections are too large ([congruent]1 GeV) and rule out the significance of the usual confining part [ital I][sub conf] of the BS kernel as obtai...
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| Veröffentlicht in: | Physical review. D, Particles and fields Particles and fields, 1993-09, Vol.48 (5), p.2360-2363 |
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| container_end_page | 2363 |
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| container_issue | 5 |
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| container_title | Physical review. D, Particles and fields |
| container_volume | 48 |
| creator | BRAMBILLA, N PROSPERI, G. M |
| description | We reconsider the problem of the retardation corrections to the quarkonium spectrum, due to some errors occurring in an earlier paper. We find that such corrections are too large ([congruent]1 GeV) and rule out the significance of the usual confining part [ital I][sub conf] of the BS kernel as obtained by a simple covariantization'' of the instantaneous form implied by the linear potential. This suggests to keep [ital I][sub conf] instantaneous so that the only retardation correction comes from the perturbative part of the kernel. Under this assumption we calculate the correction to the hyperfine splitting of heavy quarkonium and find it to be of the order of few tens MeV and in the right direction. |
| doi_str_mv | 10.1103/PhysRevD.48.2360 |
| format | Article |
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D, Particles and fields</jtitle><addtitle>Phys Rev D Part Fields</addtitle><date>1993-09-01</date><risdate>1993</risdate><volume>48</volume><issue>5</issue><spage>2360</spage><epage>2363</epage><pages>2360-2363</pages><issn>0556-2821</issn><eissn>1089-4918</eissn><coden>PRVDAQ</coden><abstract>We reconsider the problem of the retardation corrections to the quarkonium spectrum, due to some errors occurring in an earlier paper. We find that such corrections are too large ([congruent]1 GeV) and rule out the significance of the usual confining part [ital I][sub conf] of the BS kernel as obtained by a simple covariantization'' of the instantaneous form implied by the linear potential. This suggests to keep [ital I][sub conf] instantaneous so that the only retardation correction comes from the perturbative part of the kernel. Under this assumption we calculate the correction to the hyperfine splitting of heavy quarkonium and find it to be of the order of few tens MeV and in the right direction.</abstract><cop>Ridge, NY</cop><pub>American Physical Society</pub><pmid>10016477</pmid><doi>10.1103/PhysRevD.48.2360</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0556-2821 |
| ispartof | Physical review. D, Particles and fields, 1993-09, Vol.48 (5), p.2360-2363 |
| issn | 0556-2821 1089-4918 |
| language | eng |
| recordid | cdi_osti_scitechconnect_6244308 |
| source | American Physical Society Journals |
| subjects | 662110 - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-) 662240 - Models for Strong Interactions- (1992-) 662420 - Properties of Mesons & Meson Resonances- (1992-) BETHE-SALPETER EQUATION CONFINEMENT CORRECTIONS EQUATIONS Exact sciences and technology HYPERFINE STRUCTURE KERNELS Other models for strong interactions PERTURBATION THEORY Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS POTENTIALS QUARKONIUM Specific theories and interaction models particle systematics SPECTRA The physics of elementary particles and fields |
| title | Retardation corrections to the quarkonium spectrum and the form of the confinement kernel |
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