Heavy flavour multiplicities at very high energies

We calculate the total multiplicity of heavy flavours in e +e − annihilation at very high energies in the framework of QCD. The problem is dominated by the soft limit of the perturbative expansion and we develop suitable techniques to resum to all orders the leading double logarithmic terms. The res...

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Bibliographic Details
Published inNuclear physics. B Vol. 155; no. 1; pp. 253 - 268
Main Authors Furmanski, W., Petronzio, R., Pokorski, S.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.01.1979
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Summary:We calculate the total multiplicity of heavy flavours in e +e − annihilation at very high energies in the framework of QCD. The problem is dominated by the soft limit of the perturbative expansion and we develop suitable techniques to resum to all orders the leading double logarithmic terms. The results indicate at very high energy a growth of multiplicity faster than any power of log. We find an interesting asymptotic factorization of energy dependence and flavour mass dependence of multiplicities.
ISSN:0550-3213
1873-1562
DOI:10.1016/0550-3213(79)90365-1