Observation of Shadowing in the Virtual Photon Total Hadronic Cross-Section on Nuclei

Journal Article · Fri May 01 04:00:00 EDT 1981 · Phys.Rev.Lett.

DOI:https://doi.org/10.1103/PhysRevLett.47.293· OSTI ID:2571244

Goodman, M. S. ^[1]; Hall, M. ^[1]; Loomis, W. A. ^[1]; Pipkin, F. M. ^[1]; Wilson, R. ^[1]; Thornton, R. K. ^[2]; Hicks, R. ^[3]; Kirk, T. ^[3]; Macallister, J. ^[4]; Quirk, T. ^[4]; Wright, S. C. ^[5]; Brandenburg, G. ^[6]; Young, C. ^[6]; Francis, W. R. ^[7]; Kostoulas, I. ^[7]

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1. Harvard U.
2. Tufts U.
3. Fermilab
4. Oxford U.
5. Chicago U.
6. MIT, LNS
7. Michigan State U.

We have measured the total hadronic cross section of virtual photons incident on carbon, copper, and lead in the region Q2=0.01−30 GeV2 and ν=40−200 GeV. A 209-GeV/c muon beam was used as a source of virtual photons. The results indicate shadowing of the virtual photons below Q2=1 GeV2 and a decrease of shadowing for Q2>3 GeV2. The shadowing persists to larger Q2 than indicated by experiments at lower ν.

• Research Organization: Chicago U.; Michigan State U.; Tufts U.; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); MIT, LNS; Harvard U.; Oxford U.
• Sponsoring Organization: US Department of Energy
• DOE Contract Number: 89243024CSC000002
• OSTI ID: 2571244
• Report Number(s): FERMILAB-PUB-81-042-E; FERMILAB-PUB-81-042-EXP; oai:inspirehep.net:165459
• Journal Information: Phys.Rev.Lett., Journal Name: Phys.Rev.Lett. Vol. 47
• Country of Publication: United States
• Language: English