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Measurement of the proton structure function F2 and σγ*ρtot at low Q2 and very low x at HERA

Abstract:
A small electromagnetic sampling calorimeter, installed in the ZEUS experiment in 1995, significantly enhanced the acceptance for very low x and low Q2 inelastic neutral current scattering, e+p → e+X, at HERA. A measurement of the proton structure function F2 and the total virtual photon-proton (γ*p) cross-section is presented for 0.11 ≤ Q2 ≤ 0.65 GeV2 and 2 × 10-6 ≤ x ≤ 6 × 10-5, corresponding to a range in the γ*p c.m. energy of 100 ≤ W ≤ 230 GeV. Comparisons with various models are also presented. © 1997 Published by Elsevier Science B.V.

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Authors


Breitweg, J More by this author
Derrick, M More by this author
Krakauer, D More by this author
Mikunas, D More by this author
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Journal:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume:
407
Issue:
3-4
Pages:
432-448
Publication date:
1997-09-04
DOI:
ISSN:
0370-2693
URN:
uuid:3ac90534-559a-47da-a521-e059120efc3b
Source identifiers:
159657
Local pid:
pubs:159657
Language:
English

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