On x-independence of RQ = $$F_{L}^{Q}$$ / $$F_{2}^{Q}$$ Ratio at Low x

Abdulov, N. A.; Kotikov, A.V.; Lipatov, A.V.

doi:10.1134/S002136402360012X

Open Access
Published: 11 March 2023

On x-independence of R^Q = $F_{L}^{Q}$/$F_{2}^{Q}$ Ratio at Low x

N. A. Abdulov¹,
A.V. Kotikov¹ &
A.V. Lipatov^1,2

JETP Letters (2023)Cite this article

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We give predictions for the ratio R^Q(x, Q²) = $F_{L}^{Q}$(x, Q²)/$F_{2}^{Q}$(x, Q²) at small values of Bjorken variable x in the first three orders of perturbation theory. We show an approximate x-independence of R^Q(x, Q²) at low x and non-large Q² values (Q² ≤ 8–10$m_{Q}^{2}$), irrespectively on the gluon density in a proton used in the calculations. This observation could be useful in subsequent phenomenological studies of the heavy flavor production at future lepton-hadron and hadron-hadron colliders.

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Joint Institute for Nuclear Research, 141980, Dubna, Russia
N. A. Abdulov, A.V. Kotikov & A.V. Lipatov
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991, Moscow, Russia
A.V. Lipatov

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N. A. Abdulov
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A.V. Kotikov
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Abdulov, N.A., Kotikov, A. & Lipatov, A. On x-independence of R^Q = $F_{L}^{Q}$/$F_{2}^{Q}$ Ratio at Low x. Jetp Lett. (2023). https://doi.org/10.1134/S002136402360012X

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Received: 21 January 2023
Revised: 08 February 2023
Accepted: 08 February 2023
Published: 11 March 2023
DOI: https://doi.org/10.1134/S002136402360012X

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On x-independence of R^Q = \(F_{L}^{Q}\)/\(F_{2}^{Q}\) Ratio at Low x

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