Very low \(x\) gluon density determined by LHCb exclusive \(J/\psi\) data

Very low \(x\) gluon density determined by LHCb exclusive \(J/\psi\) data

The low \(x\) behaviour of the gluon density \(xg(x,\mu^2)\) at scale \(\mu^2=2.4\) GeV\(^2\) is determined using exclusive \(J/\psi\) production data from HERA and LHCb within the framework of collinear factorisation at next-to-leading order (NLO). It is shown that in the interval \(3\times 10^{-6}...

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Veröffentlicht in:arXiv.org 2020-11
Hauptverfasser: Flett, Chris A, Martin, Alan D, Ryskin, Misha G, Teubner, Thomas
Format: Artikel
Sprache:eng
Schlagworte:
Density
Distribution functions
Gluons
Partons
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Zusammenfassung:The low \(x\) behaviour of the gluon density \(xg(x,\mu^2)\) at scale \(\mu^2=2.4\) GeV\(^2\) is determined using exclusive \(J/\psi\) production data from HERA and LHCb within the framework of collinear factorisation at next-to-leading order (NLO). It is shown that in the interval \(3\times 10^{-6} < x
ISSN:2331-8422
DOI:10.48550/arxiv.2006.13857