Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-10-14
Phys.Rev. D57 (1998) 4385-4392
Physics
High Energy Physics
High Energy Physics - Phenomenology
30 pages, epsf-style, 12 figures
Scientific paper
10.1103/PhysRevD.57.4385
In the leading order of perturbative QCD one calculates the total and differential cross-sections for the hadronic production of doubly charmed baryons $\Xi_{cc}$ and $\Xi_{cc}^*$ in different experiments. The experimental evaluation of cross-sections for the $J/\Psi +D + \bar D$ production would allow one to decrease the uncertainty in the determination of cross-sections for the doubly charmed baryons due to the choice of $\alpha_s$ and $m_c$. One shows that in the HERA-B and E781 experiments with fixed tagets the suppression of the $\Xi_{cc}$ and $\Xi_{cc}^*$ production to the yield of $c \bar c$-pairs is the value of the order of $10^{-6}-10^{-5}$, whereas at the TEVATRON and LHC colliders it is about $10^{-4}-10^{-3}$. In the E781 experiment the observation of $\Xi_{cc}$ and $\Xi_{cc}^*$ is practically unpossible. At the HERA-B and TEVATRON facilities one can expect $10^5$ events with the double charm, and at LHC one has about $10^9$ ones.
Berezhnoy A. V.
Kiselev V. V.
Likhoded A. K.
Onishchenko Andrei I.
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