High Energy Physics Seminar
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2026-06-12 (Friday)
room B2.38, Pasteura 5 at 11:30 
prof. dr hab. Barbara Badełek (IFD UW)Electroproduction structure function F2 in the low Q2, low x region - an update (talk given at the 33rd International Workshop on Deep Inelastic Scattering and Related Subjects, DIS2026, Bologna, May 2026)
The proton structure function F2 in the low Q2, low x region is constructed and analysed using the generalised vector meson dominance representation with the large Q2 spectral function calculated from the analytic continuation of the parton model structure function. This is an update of the work published in Z. Phys.C43 (1989) 251 and Phys. Lett. B295 (1992) 263, with various modern parton parametrisations. Possible effects of the large Q2 scaling violation on the low Q2 part of the F2 are investigated. Predictions of the model are compared with available electroproduction measurements. The analysis permits understanding of the transition from the perturbative to nonperturbative regions (including photoproduction) and thus of the experimental results. It may also be of a high practical value in radiative correction procedures to be applied in extraction of structure functions from the data e.g. in the future Electron-Ion Collider.