Extraction of spin observables in baryon-baryon scattering, sensitive to gluon- and quark-exchange effects

Spin-dependent characteristics of baryon-baryon scattering are discussed, in which QCD dynamics is expected to display itself in most simply treatable regimes: 1). being dominated by semi-classical gluonic field without dynamical quarks; 2). as perturbative scattering. It is argued that peripheral s...

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Збережено в:
Бібліографічні деталі
Дата:2007
Автор: Bondarenco, M.V.
Формат: Стаття
Мова:English
Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2007
Назва видання:Вопросы атомной науки и техники
Теми:
Онлайн доступ:http://dspace.nbuv.gov.ua/handle/123456789/110162
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Extraction of spin observables in baryon-baryon scattering, sensitive to gluon- and quark-exchange effects / M.V. Bondarenco // Вопросы атомной науки и техники. — 2007. — № 5. — С. 31-39. — Бібліогр.: 32 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
Опис
Резюме:Spin-dependent characteristics of baryon-baryon scattering are discussed, in which QCD dynamics is expected to display itself in most simply treatable regimes: 1). being dominated by semi-classical gluonic field without dynamical quarks; 2). as perturbative scattering. It is argued that peripheral semi-classical gluon exchange can make a major contribution to the pseudovector scattering amplitude, whereas one of the tensor amplitude components must be seeded by quark exchange, thus containing a hard scale and allowing for perturbative treatment. Expressions for absolute values of the promising amplitudes are derived in terms of double spin asymmetries in NN-scattering. Options for realization of corresponding polarization measurements in strange hyperon collisions with nucleons are analysed, along with consistency tests supplied by additional spin amplitudes emerging in non-identical.