EXTRACTION OF THE GLUON DENSITY OF THE PROTON AT X

Zeus Collaboration; J Repond

doi:10.1016/0370-2693(95)00021-C

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EXTRACTION OF THE GLUON DENSITY OF THE PROTON AT X

Journal article

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Peer reviewed

EXTRACTION OF THE GLUON DENSITY OF THE PROTON AT X

Zeus Collaboration and J Repond

Physics letters. B, Vol.345(4), pp.576-588

02/23/1995

DOI: 10.1016/0370-2693(95)00021-C

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Abstract

The gluon momentum density xg(x, Q(2)) of the proton was extracted at Q(2) = 20 GeV2 for small values of x between 4 x 10(-4) and 10(-2) from the scaling violations of the proton structure function F-2 measured recently by ZEUS in deep inelastic neutral current ep scattering at HERA. The extraction was performed in two ways. Firstly, using a global NLO fit to the ZEUS data on F-2 at low x constrained by measurements from NMC at larger x; and secondly using published approximate methods for the solution of the GLAP QCD evolution equations. Consistent results are obtained. A substantial increase of the gluon density is found at small x in comparison with the NMC result obtained at larger values of x.

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Details

Title: Subtitle: EXTRACTION OF THE GLUON DENSITY OF THE PROTON AT X
Creators: Zeus Collaboration
J Repond (Contributor) - Argonne National Laboratory
Resource Type: Journal article
Publication Details: Physics letters. B, Vol.345(4), pp.576-588
Publisher: Elsevier
DOI: 10.1016/0370-2693(95)00021-C
ISSN: 0370-2693
eISSN: 1873-2445
Number of pages: 13
Language: English
Date published: 02/23/1995
Academic Unit: Physics and Astronomy
Record Identifier: 9984627320002771

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