On determination of the large-${1\over x}$ gluon distribution at HERA

Details On determination of the large-${1\over x}$ gluon distribution at HERA On determination of the large-${1\over x}$ gluon distribution at HERA

1994-03-08

arxiv.org/abs/hep-ph/9403243v2

Phys.Lett. B332 (1994) 184-190

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures upon the request from kph154@zam001.zam.kfa-juelich.de, J\"ulich preprint KFA-IKP(TH)-1994-12. Some misp

Scientific paper

10.1016/0370-2693(94)90877-X

We discuss corrections to the Leading-Log$Q^{2}$ relationships between the gluon density $g(x,Q^{2})$ and $F_{L}(x,Q^{2}),\,\partial F_{T}(x,Q^{2}) /\partial \log Q^{2}$ in the HERA range of large ${1\over x}$. We find that the above quantities probe the gluon density $g(x,Q_{T,L}^{2})$ at $Q_{T,L}^{2}=C_{T,L}Q^{2}$, with the $Q^{2}$-rescaling factors $C_{T}\approx 2.2$ and $C_{L}\approx 0.42$. The possibility of treating charm as an active flavour is critically re-examined.

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