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Parametrizations of collinear and kt-dependent parton densities in protonстатья
- Авторы: Abdulov N.A., Kotikov A.V., Lipatov A.V.
- Журнал: Particles
- Том: 5
- Год издания: 2022
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 535
- Последняя страница: 560
- DOI: 10.3390/particles5040039
- Аннотация: A new type of parametrization for parton distribution functions in a proton, based on their Q2-evolution at large and small x values, is constructed. In our analysis, the valence and nonsinglet parts obey the Gross-Llewellyn-Smith and Gottfried sum rules, respectively. For the singlet quark and gluon densities momentum conservation is taken into account. Then, using the Kimber-Martin-Ryskin prescription, we extend the consideration to Transverse Momentum Dependent (TMD, or unintegrated) gluon and quark distributions in a proton, which currently plays an important role in a number of phenomenological applications. The analytical expressions for the latter, valid for both low and large x, are derived for the first time.
- Добавил в систему: Липатов Артем Владимирович