4.5 Article

Importance of heavy quark longitudinal structure function measurements at future circular collider energies

Journal

CHINESE PHYSICS C
Volume 45, Issue 6, Pages -

Publisher

IOP Publishing Ltd
DOI: 10.1088/1674-1137/abf1de

Keywords

future circular colliders; heavy quarks; longitudinal structure function

Funding

  1. Razi University

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This article examines the importance of the ratio of structure functions for heavy quark pair production at low x values based on HERA data, showing good agreement with the results. The measurements are crucial for heavy quarks, especially in the context of LHeC and FCC-eh. Comparison of ratios obtained in LHeC and FCC-eh for top structure functions is proportional to the specified y range of inelasticity.
In this article, we consider the ratio of structure functions for heavy quark pair production at low values of x. The importance of this ratio for charm and beauty pair production is examined according to the Hadron Electron Ring Accelerator (HERA) data. The behavior of these ratios is considered due to the hard pomeron behavior of the gluon distribution function. The results are in good agreement with the HERA data. Expanding this data to the range of new energies underscores the importance of these measurements for heavy quarks. The ratio of charm and beauty structure functions at the proposed Large Hadron electron Collider (LHeC) is considered as a function of invariant center-of-mass energy. For top pair production this ratio is extracted with known kinematics of the LHeC and Future Circular Collider electron-hadron (FCC-eh) colliders. Comparison of the results obtained for the ratio of top structure functions in LHeC and FCC-eh are proportional to the specified inelasticity y range.

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