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Diffractive parton distributions from the analysis with higher twist

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arxiv 0704.1608 v3 pith:555IHX6N submitted 2007-04-12 hep-ph

K. Golec-Biernat , A. Luszczak This is my paper · ORCID
classification hep-ph
keywords diffractivecontributiondistributionspartontwist--2additionanalysesanalysis
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Diffractive parton distributions of the proton are determined from fits to diffractive data from HERA. In addition to the twist--2 contribution, the twist--4 contribution from longitudinally polarised virtual photons is considered, which is important in the region of small diffractive masses. A new prediction for the longitudinal diffractive structure function is presented which differs significantly from that obtained in the pure twist--2 analyses.

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  1. Role of higher twist effects in diffractive DIS and determination of diffractive parton distribution functions

    hep-ph 2019-08 conditional novelty 4.0 of 10

    A next-to-leading order fit to HERA diffractive DIS data that includes a fitted 1/Q^2 higher-twist term improves chi2/dof from 1.052 to 1.013 and changes the extracted gluon density, though the effect is not shown to ...

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