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Study of ϱ0 meson spin alignment in antiproton proton and pp interactionsстатья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
- Авторы: Dementiev R.K., Korzhavina I.A., Leikin E.M., Rud V.I., Tikhonova L.A.
- Журнал: Nuclear Physics B
- Том: 294
- Номер: 4
- Год издания: 1987
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 1037
- Последняя страница: 1083
- DOI: 10.1016/0550-3213(87)90621-3
- Аннотация: The ϱ0 meson spin alignment is studied inclusively in all inelastic and in some nonannihilation channels of View the MathML source interactions at 22.4 and 12 GeV/c, in the reaction View the MathML source at 5.7 GeV/c and in pp interactions at 24 GeV/c. Its dependence on multiplicity, the ϱ0 meson transverse momentum p⊥ and the Feynman variable x is investigated. The method of the inclusive analysis is checked with the help of Monte Carlo events. An essential ϱ0 meson spin alignment, manifesting itself most clearly in the transversity frame, is observed in View the MathML source interactions; the values of the probability ϱ00T of the zero ϱ0 spin projection on the normal to the production plane are 0.51 ± 0.06, 0.53 ± 0.04 and 0.55 ± 0.04 for the above View the MathML source reactions, respectively. A significant increase of ϱ00T with p⊥ and only a weak dependence of ϱ00T on x are obtained for View the MathML source data at 5.7 and 12 GeV/c. The ϱ meson spin alignment is also observed in View the MathML source nonannihilation channels at 12 GeV/c (ϱ00T = 0.65 ± 0.12) while no substantial effect is seen in pp interactions (View the MathML source). The results are compared with other polarization data and discussed in terms of Regge phenomenology and a quark-parton model incorporating spin-orbit interaction with the confining field. Получены новые данные о выстроенности Rho-мезона в антипротон-протонных взаимодействиях при ипульсе антипротона 22.4 ГэВ/c.
- Добавил в систему: Дементьев Ромуальд Константинович