期刊
EUROPEAN PHYSICAL JOURNAL C
卷 81, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-021-09172-y
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资金
- Fondecyt (Chile) [1170319]
- Proyecto Basal (Chile) [FB 0821]
- CONICYT (Chile) [PIA ACT1406]
The production of hadrons with two charmed quarks in pp and ee collisions was studied, comparing the fragmentation approach with the full calculation. It was found that non-fragmentation contributions remain significant even at smaller transverse momenta.
We consider the production of hadrons containing two charmed quarks in pp and ee collisions. We perform a numerical comparison of the fragmentation approach with the full calculation at O(alpha(4)(s)). We conclude that the non-fragmentation contributions remain important up to transverse momenta as large as about 40 GeV, thus making questionable the applicability of the fragmentation approximation at smaller transverse momenta.
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