Volume 508 - QCD at the Extremes (QCDEX2025) - Session: Parton Densities and TMDs at high scales, including Heavy Boson PDFs
Dijets with a large rapidity separation as a probe for large extra dimension gravity in trans-Planckian regime
A.I. Egorov, V.T. Kim*, V.A. Murzin and V.A. Oreshkin
*: corresponding author
Full text: pdf
Pre-published on: December 01, 2025
Published on: —
Abstract
Dijets with a large rapidity separation between jets serve as a probe for the gravity with large extra dimensions at proton colliders in the trans-Planckian eikonal regime, i. e., when $\sqrt{\hat{s}} \gg M_D \gg \sqrt{-\hat{t}}$. Here, $\hat{s}$ and $\hat{t}$ are the Mandelstam variables of the colliding parton-parton system, and $M_D$ is the Planck mass scale in the space-time with $n_D$ compactified extra dimensions.
A relevant observable for this regime may be the cross section of high-mass ($M_{jj}\sim\sqrt{\hat{s}} \gg M_D$) dijet production with jets widely separated in rapidity.
Then the standard model (SM) background should be calculated within the next-to-leading logarithmic (NLL) approximation of Lipatov-Fadin-Kuraev-Balitsky (BFKL) formalism of quantum chromodynamics (QCD) suitable for
$\sqrt{\hat{s}}\gg\sqrt{\hat{t}}\gg\Lambda_\mathrm{QCD}$.
The signal of the large extra dimension gravity alongside 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.
DOI: https://doi.org/10.22323/1.508.0011
How to cite

Metadata are provided both in article format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in proceeding format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.