Contribution of the two-photon interaction to the EMC effect

G. Alexander*, E. Gotsman, U. Maor

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The two-photon contribution to deep inelastic lepton-nucleus scattering is investigated. The resulting contribution is of the order of a few percent of the ratio of the lepton-nucleus cross section per nucleon divide by the lepton-proton cross section, and is restricted to the lowest kinematically allowed values of the proton scaling variable Xlp. The calculated effect is presented as a function of the nucleus charge Z, the incoming lepton laboratory energy Elab, and momentum transfer squared Q2. The γγ contribution increases with Z and with Elab for fixed Q2.

Original languageEnglish
Pages (from-to)384-388
Number of pages5
JournalPhysics Letters B
Issue number4-6
StatePublished - 31 Oct 1985


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