Projected sensitivity to the ADD large extra dimensions model in the monojet plus missing transverse momentum final state at HL-LHC, HE-LHC, and FCC-hh
Abstract
We present a unified projection of the sensitivity to the Arkani-Hamed-Dimopoulos-Dvali (ADD) model of large extra dimensions in the monojet plus missing transverse momentum final state at the HL-LHC (√s=14 TeV, 3 ab−1), the HE-LHC (27 TeV, 15 ab−1) and the FCC-hh (100 TeV, 30 ab−1), for n=2,3,4,6 extra dimensions, with one selection, significance estimator and calibration throughout. Signal samples are generated with Pythia 8 and combined with the post-fit Standard-Model background yields released by ATLAS and CMS on HEPData; the expected significance combines the thirteen exclusive ETmiss bins of the ATLAS signal region, matching the binning of the published likelihood fit. Two elements are new. First, the energy scaling of the background to higher √s, including the 13→14 TeV step, is measured as a function of ETmiss from dedicated Z(νν̅)+jets and W(ℓν)+jets samples rather than assumed constant; this reduces the projected FCC-hh reach by 39% relative to a constant-factor treatment. Second, the framework is anchored to the published ATLAS Run-2 expected 95% CL limits through a transparent n-dependent calibration, determined directly for all five values of n and found consistent with unity (1.001±1.4%), so that it acts as a consistency check rather than a sizeable correction; the selection response is validated against the published ATLAS cutflow. The projected 95% CL exclusion reach in MD for n=2 is 12.5, 15.2 and 22.0 TeV at the three colliders, with 5σ discovery reach of 9.8, 12.0 and 17.0 TeV, extending the ATLAS Run-2 bound of MD>11.2 TeV by factors of 1.1-2.0. The calibration scheme provides a template for analogous future-collider studies; the projections hold within the stated Run-2-anchored detector and uncertainty assumptions.
Related
- Typed Transverse Momentum Parton distribution function computations
- Gravitational transverse momentum dependent distributions for the gluons
- Energy-momentum tensor at small x from gravitational transverse-momentum distributions
- Transverse momentum correlations and QED effects in TMD determinations
- Drell-Yan lepton pair production from low to high transverse momentum
BibTeX
@misc{guler2026projected,
title = {{Projected sensitivity to the ADD large extra dimensions model in the monojet plus missing transverse momentum final state at HL-LHC, HE-LHC, and FCC-hh}},
author = {Emine Gurpinar Guler},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.36107},
eprint = {2610.36107},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.36107},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Projected sensitivity to the ADD large extra dimensions model in the monojet plus missing transverse momentum final state at HL-LHC, HE-LHC, and FCC-hh
AU - Emine Gurpinar Guler
PY - 2026
DA - 2026/10/26
PB - arXiv
DO - 10.48550/arxiv.2610.36107
UR - https://arxiv.org/abs/2610.36107
AB - We present a unified projection of the sensitivity to the Arkani-Hamed-Dimopoulos-Dvali (ADD) model of large extra dimensions in the monojet plus missing transverse momentum final state at the HL-LHC (√s=14 TeV, 3 ab^−1), the HE-LHC (27 TeV, 15 ab^−1) and the FCC-hh (100 TeV, 30 ab^−1), for n=2,3,4,6 extra dimensions, with one selection, significance estimator and calibration throughout. Signal samples are generated with Pythia 8 and combined with the post-fit Standard-Model background yields released by ATLAS and CMS on HEPData; the expected significance combines the thirteen exclusive E_T^miss bins of the ATLAS signal region, matching the binning of the published likelihood fit. Two elements are new. First, the energy scaling of the background to higher √s, including the 13→14 TeV step, is measured as a function of E_T^miss from dedicated Z(νν̅)+jets and W(ℓν)+jets samples rather than assumed constant; this reduces the projected FCC-hh reach by 39% relative to a constant-factor treatment. Second, the framework is anchored to the published ATLAS Run-2 expected 95% CL limits through a transparent n-dependent calibration, determined directly for all five values of n and found consistent with unity (1.001±1.4%), so that it acts as a consistency check rather than a sizeable correction; the selection response is validated against the published ATLAS cutflow. The projected 95% CL exclusion reach in M_D for n=2 is 12.5, 15.2 and 22.0 TeV at the three colliders, with 5σ discovery reach of 9.8, 12.0 and 17.0 TeV, extending the ATLAS Run-2 bound of M_D>11.2 TeV by factors of 1.1-2.0. The calibration scheme provides a template for analogous future-collider studies; the projections hold within the stated Run-2-anchored detector and uncertainty assumptions.
ER -