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

By GulerOct 26, 2026

Score█████░░░░░4.6

Key numbers

39% relative to a constant-factor
95% CL limits through a
95% CL exclusion reach in

VerdictWorth a reader's time today.

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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 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(νbarν)+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.

Emine Gurpinar Guler

The editor's rubric

Heuristic review

Leverage3 / 5: A method or resource many groups across the field will adopt within a year.; 18% of this desk’s rubric
Magnitude3 / 5: Large gain: roughly 2x, or a clear new state of the art on a hard, unsaturated problem.; 20% of this desk’s rubric
Evidence4 / 5: Strong: large scale, preregistered, independently replicated, or a well-powered randomized trial.; 22% of this desk’s rubric
Novelty3 / 5: A genuinely new approach to an open problem.; 22% of this desk’s rubric
Trajectory2 / 5: Some room to improve with obvious engineering.; 10% of this desk’s rubric
Stakes2 / 5: Benefits a professional community (practitioners, clinicians, engineers).; 8% of this desk’s rubric

Dimension	Level	Weight	What that level means
Leverage	███░░3/5	18%	A method or resource many groups across the field will adopt within a year.
Magnitude	███░░3/5	20%	Large gain: roughly 2x, or a clear new state of the art on a hard, unsaturated problem.
Evidence	████░4/5	22%	Strong: large scale, preregistered, independently replicated, or a well-powered randomized trial.
Novelty	███░░3/5	22%	A genuinely new approach to an open problem.
Trajectory	██░░░2/5	10%	Some room to improve with obvious engineering.
Stakes	██░░░2/5	8%	Benefits a professional community (practitioners, clinicians, engineers).

Editor’s rationale

Heuristic triage from title and abstract text only, not a reading of the paper. Cues found: method (we propose); gains (relative gain); novelty (alternative to status quo, discovery); verification (error bars, experimental validation, code released); scale (scalable); stakes (energy).

How the score was computed

rank-2026-10-18

Score█████░░░░░4.6

Score = 10 × (75% × adjusted merit / 10 + 15% × attention + 10% × freshness)

Desks place stronger verdicts first, then use this score to order work within the same verdict.

Merit: 6.1 / 10; Weighted rubric, evidence-gated.
Adjusted merit: 5.0 / 10; Shrunk toward the desk prior by editor confidence (46%).
Attention: 0%; Citations, upvotes, points, mentions.
Freshness: 86%; Half-life decay since publication.

Citations0 (reference 20, via semantic-scholar, Oct 28, 2026, 07:29 UTC)

The record

Reviewed by heuristic-v10 on Oct 28, 2026, 07:29 UTC. Paper type: method.
Categories: hep-ph, hep-ex
TOP, No.6 in the Front page edition of October 28, 2026.
LEAD, No.1 in the Physics edition of October 28, 2026.