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    Doubly charmed baryon production in hadronic experiments

    A. V. Berezhnoy, V. V. Kiselev*, A. K. Likhoded, and A. I. Onishchenko

    • State Research Center of Russia “Institute for High Energy Physics,” Protvino, Moscow Region, 142284 Russia

    • *Fax: +7-095-2302337. Email address: kiselev@mx.ihep.su

    Phys. Rev. D 57, 4385 – Published 1 April, 1998

    DOI: https://doi.org/10.1103/PhysRevD.57.4385

    Abstract

    In the leading order of perturbative QCD we calculate the total and differential cross sections for the hadronic production of doubly charmed baryons Ξcc and Ξcc* in different experiments. The experimental evaluation of the cross sections for the J/ψ+D+D¯ production would allow us to decrease the uncertainty in the determination of cross sections for the doubly charmed baryons due to the choice of αs and mc. We show that in the HERA-B and E781 experiments with fixed tagets the suppression of the Ξcc and Ξcc* production to the yield of cc¯ pairs is a value of the order of 10−6−10−5, whereas at the Fermilab Tevatron and CERN LHC colliders it is about 10−4−10−3. In the E781 experiment the observation of Ξcc and Ξcc* is practically impossible. At the HERA-B and Tevatron facilities one can expect 105 events with the double charm, and at LHC one has about 109 events.

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