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

Barbara Badełek; Anna M. Staśto

doi:10.1016/j.physletb.2022.137086

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

Barbara Badełek, Anna M. Staśto

Physics

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3 Scopus citations

Abstract

A reanalysis of the model for the longitudinal structure function F_L(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 F_L∼Q⁴ as Q²→ 0 and higher twist contribution which vanishes as Q²→∞. Revised model was critically updated and compared to the presently available data.

Original language	English (US)
Article number	137086
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	829
DOIs	https://doi.org/10.1016/j.physletb.2022.137086
State	Published - Jun 10 2022

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2022.137086

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

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