Ivanov Igor. Diffractive production of vector mesons in Deep Inelastic Scattering within kt-factorization approach

Диссертация "Дифракционное рождение векторных мезонов в глубоко-неупругом рассеянии в рамках к_t-факторизации" представлена в факультет математики и естественных наук Рейнского Боннского Университета им. Фридриха Вильгельма г. Бонн на соискание степени доктора естественных наук (Dr. гег. nat.).Текст диссертации: английский.
Автор: Ivanov Igor.
Диссертация выполнена в Институте Ядерной Физики Исследовательского Центра Юлих с разрешения факультета математики и естественных наук Рейнского Боннского Университета им. Фридриха Вильгельма.
1-й рецензент: Проф. Др. Дж. Шпет.
2-й рецензент: Проф. Др. Х.-Р. Петри.
Дата защиты: 11 июля 2002 г.
Количество cтраниц: 173.Abstract
In this work we give a theoretical description of the elastic vector meson production in diffractive DIS developed within the k_t–factorization formalism. Since the k_t–factorization scheme does not require large values of Q²+m_V², we conduct an analysis that is applicable to all values of Q² from photo– up to highly virtual production of vector mesons.
The basic quantity in this approach – the unintegrated gluon structure function – was for the first time extracted from the experimental data on F_2p, thoroughly investigated, and consistently used in the vector meson production calculation.
Moreover, by limiting ourselves to the lowest Fock state of the vector meson, we were able to construct in a closed form the theory of spin-angular coupling in the vector meson. This allowed us for the first time to address the production of a vector meson in a given spin-angular state. We performed an extensive analytical and numerical investigation of the properties of 1S, 2S, and D–wave vector meson production reactions.
Treating the physical ground state vector mesons as purely 1S states, we observed a good overall agreement with all available experimental data on vector meson production. For the excited states, our analysis predicts a picture which is remarkably different from 1S–state, so that such reactions can be regarded as potential sources of new information on the structure of excited states in vector mesons.Примечание. Материал размещен в целях популяризации научных знаний.