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Dijets with a large rapidity separation in the next-to-leading order BFKL formalism for searches of large extra dimensions at colliders

Anatolii Iu. Egorov*, Victor T. Kim†, Viktor A. Murzin, and Vadim A. Oreshkin

  • *Contact author: egorov_aiu@pnpi.nrcki.ru
  • †Contact author: kim_vt@pnpi.nrcki.ru
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Phys. Rev. D 113, 035038 – Published 26 February, 2026

DOI: https://doi.org/10.1103/3926-n74c

Abstract

Search for the gravity with large extra dimensions at collider energies is considered in the trans-Planckian eikonal regime, i.e., when s^≫MD≫−t^. Here s^ and t^ are the Mandelstam variables of colliding parton-parton system and MD is the Planck mass scale in the space-time with compactified nD extra dimensions. A relevant observable for this regime may be the cross section of high-mass (Mjj∼s^≫MD) dijet production with a large rapidity separation. Then the standard model background should be calculated within the next-to-leading logarithmic (NLL) approximation of Balitsky-Fadin-Kuraev-Lipatov (BFKL) formalism of quantum chromodynamics (QCD) suitable for s^≫−t^≫ΛQCD. In this work the signal of the large extra dimension gravity as well as the NLL BFKL QCD background are estimated for the high-luminosity Large Hadron Collider (HL-LHC) and future colliders such as FCCpp and CEPC-SppC.

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Phys. Rev. D 113, 035038– Published 26 February, 2026
  • Received 8 November 2025
  • Accepted 5 February 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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