Issues

 / 

1992

 / 

April

  

Reviews of topical problems


Orbitally excited hadrons

This review is devoted to the description of high-spin hadrons. A relativistic QCD-string model that reproduces the principal feature of the spectra of orbitally excited hadrons, namely, the linearity of Regge trajectories, is employed. Particular emphasis is placed on the inclusion of spin effects. For large orbital excitations, these effects appear as the spin-orbit interaction whose sign and magnitude are determined by confinement properties. Arguments are presented in support of the proposition that, for large orbital excitations, the spin-orbit interaction of quarks in the string model is largely due to the Thomas effect. The consequences of this hypothesis are analyzed phenomenologically, and the results are compared with experimental data. Specific predictions are obtained and await experimental verification. Orbital excitations of four-quark and dibaryon states are predicted.

Fulltext pdf (1.1 MB)
Fulltext is also available at DOI: 10.1070/PU1992v035n04ABEH002226
PACS: 12.38.Aw, 11.55.Jy, 12.40.Nn, 14.20.Pt, 14.65.−q (all)
DOI: 10.1070/PU1992v035n04ABEH002226
URL: https://ufn.ru/en/articles/1992/4/a/
Citation: Kobzarev I Yu, Martem’yanov B V, Shchepkin M G "Orbitally excited hadrons" Sov. Phys. Usp. 35 (4) 257–275 (1992)
BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks

Оригинал: Кобзарев И Ю, Мартемьянов Б В, Щепкин М Г «Орбитальные возбуждения адронов» УФН 162 (4) 1–41 (1992); DOI: 10.3367/UFNr.0162.199204a.0001

© 1918–2024 Uspekhi Fizicheskikh Nauk
Email: ufn@ufn.ru Editorial office contacts About the journal Terms and conditions