Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-10-17
J.Phys.G34:845,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 8 figures. More discussions are added
Scientific paper
10.1088/0954-3899/34/5/006
The effects of the intrinsic charm on the hadronic production of $\Xi_{cc}$ are studied. By taking reasonable intrinsic charm component into account, the change of the theoretical prediction on the production of $\Xi_{cc}$ for LHC and Tevatron is small, but in contrast it may enhance significantly for SELEX. The reason is that the collision energy at LHC and Tevatron is so large that the gluon-gluon fusion sub-process, which is irrelevant to intrinsic charm, becomes dominant. But the situation for SELEX is quite different. Our numerical results for SELEX show that by considering all the contributions from various sub-processes, the predicted cross-section may be enhanced by a factor so big as $10^2$ due to a modulating intrinsic charm being taken into account. Therefore, the hadronic production of $\Xi_{cc}$ at SELEX may be sensitive enough in observing the intrinsic charm inside the incident hadrons.
Chang Chao-Hsi
Ma Jian-Ping
Qiao Cong-Feng
Wu Xing-Gang
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