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Longitudinal structure function FL at low Q2 and low x with model for higher twist: An update

B. Badelek,A. M. Stasto

Physics Letters B（2022）

Cited 3|Views15
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Abstract
A reanalysis of the model for the longitudinal structure function FL(x,Q2) at low x and low Q2 was undertaken, in view of the advent of the EIC. The model is based on the photon-gluon fusion mechanism suitably extrapolated to the region of low Q2. It includes the kinematic constraint FL∼Q4 as Q2→ 0 and higher twist contribution which vanishes as Q2→∞. Revised model was critically updated and compared to the presently available data.
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chiral dynamics
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