Composite dark matter at the LHC
Abstract
We investigate a composite-inspired model in which a scalar dark matter candidate couples to third-generation quarks through a non-minimal set of coloured vector-like fermions, as motivated by partial compositeness. The simultaneous presence of several mediator states leads to a richer phenomenology than conventional single-mediator descriptions, and we confront the framework with the observed relic abundance, direct-detection and indirect-detection constraints, as well as data from the Large Hadron Collider. At colliders, we compare the sensitivity of dedicated new-physics searches with that of unfolded measurements of Standard Model processes, and we assess the impact of higher-order corrections on the different production mechanisms. We find that dedicated searches generally provide the strongest collider exclusions, while unfolded measurements offer complementary sensitivity. Direct detection becomes increasingly powerful as the interaction strength grows and can become the dominant constraint. This broader complementarity arises because collider data directly test the production and decay of the coloured mediators, whereas cosmological and astroparticle observables constrain the interactions governing dark-matter abundance, scattering and annihilation. Although present constraints significantly restrict the model, viable regions compatible with the observed dark-matter abundance remain.
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BibTeX
@misc{cornell2026composite,
title = {{Composite dark matter at the LHC}},
author = {Alan S Cornell and Louie Corpe and Aldo Deandrea and Benjamin Fuks and Taylor Murphy and Clarisse Prat},
howpublished = {HAL},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.16156},
eprint = {2609.16156},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05763107v1},
}
RIS
TY - UNPB
TI - Composite dark matter at the LHC
AU - Alan S Cornell
AU - Louie Corpe
AU - Aldo Deandrea
AU - Benjamin Fuks
AU - Taylor Murphy
AU - Clarisse Prat
PY - 2026
DA - 2026/09/14
PB - HAL
DO - 10.48550/arxiv.2609.16156
UR - https://hal.science/hal-05763107v1
AB - We investigate a composite-inspired model in which a scalar dark matter candidate couples to third-generation quarks through a non-minimal set of coloured vector-like fermions, as motivated by partial compositeness. The simultaneous presence of several mediator states leads to a richer phenomenology than conventional single-mediator descriptions, and we confront the framework with the observed relic abundance, direct-detection and indirect-detection constraints, as well as data from the Large Hadron Collider. At colliders, we compare the sensitivity of dedicated new-physics searches with that of unfolded measurements of Standard Model processes, and we assess the impact of higher-order corrections on the different production mechanisms. We find that dedicated searches generally provide the strongest collider exclusions, while unfolded measurements offer complementary sensitivity. Direct detection becomes increasingly powerful as the interaction strength grows and can become the dominant constraint. This broader complementarity arises because collider data directly test the production and decay of the coloured mediators, whereas cosmological and astroparticle observables constrain the interactions governing dark-matter abundance, scattering and annihilation. Although present constraints significantly restrict the model, viable regions compatible with the observed dark-matter abundance remain.
ER -