Diffractive Structure Functions with H1

H1 has measured the diffractive DIS cross section $ep \rightarrow eXY$ using data from both of the HERA data-taking periods. Using new measurements of the diffractive cross section at different centre-of-mass energies, the diffractive longitudinal structure function $F_L^D$ has been extracted. The results are in agreement with NLO QCD predictions based on fits to inclusive data. New high statistics measurements of the diffractive reduced cross section $σ_r^D$ have been made using two experimental methods covering the accessible kinematic range. This precise dataset agrees well with QCD-based predictions.

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