Abstract
We discuss the elastic photo-and leptoproduction of ρ0-mesons from nucleons at Q2 ≲ 1 GeV2 as studied in recent experiments at HERA and FNAL. We find that the mass distribution of the measured π+π- pairs is determined to a large extent by the two-pion contribution to the photon spectral function as given by the pion form factor. With rising Q2 the rate of diffractive events decreases and the π+π- mass distribution approaches a symmetric shape.
Originalsprache | Englisch |
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Seiten (von - bis) | 157-161 |
Seitenumfang | 5 |
Fachzeitschrift | Physics Letters B |
Jahrgang | 389 |
Ausgabenummer | 1 |
DOIs | |
Publikationsstatus | Veröffentlicht - 5 Dez. 1996 |