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Probing the Dark Matter EFT with QUEST-DMC: Projected Sensitivities and Attenuation Ceilings

Fuente: arXiv

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Détails bibliographiques
Auteurs principaux:	DMC Collaboration, Darvishi, N., Autti, S., Bloomfield, L., Casey, A., Eng, N., Franchini, P., Haley, R. P., Heikkinen, P. J., Jennings, A., Kemp, A., Leason, E., March-Russell, J., Mayer, A., Monroe, J., Munstermann, D., Noble, M. T., Prance, J. R., Rojas, X., Salmon, T., Saunders, J., Smirnov, J., Smith, R., Thompson, M. D., Thomson, A., Ting, A., Tsepelin, V., West, S. M., Whitehead, L., Zmeev, D. E.
Format:	Preprint
Publié:	2026
Sujets:	High Energy Physics - Phenomenology
Accès en ligne:	Acceder al recurso
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author	DMC Collaboration Darvishi, N. Autti, S. Bloomfield, L. Casey, A. Eng, N. Franchini, P. Haley, R. P. Heikkinen, P. J. Jennings, A. Kemp, A. Leason, E. March-Russell, J. Mayer, A. Monroe, J. Munstermann, D. Noble, M. T. Prance, J. R. Rojas, X. Salmon, T. Saunders, J. Smirnov, J. Smith, R. Thompson, M. D. Thomson, A. Ting, A. Tsepelin, V. West, S. M. Whitehead, L. Zmeev, D. E.
author_facet	DMC Collaboration Darvishi, N. Autti, S. Bloomfield, L. Casey, A. Eng, N. Franchini, P. Haley, R. P. Heikkinen, P. J. Jennings, A. Kemp, A. Leason, E. March-Russell, J. Mayer, A. Monroe, J. Munstermann, D. Noble, M. T. Prance, J. R. Rojas, X. Salmon, T. Saunders, J. Smirnov, J. Smith, R. Thompson, M. D. Thomson, A. Ting, A. Tsepelin, V. West, S. M. Whitehead, L. Zmeev, D. E.
contents	This proceedings contribution summarises projected constraints from the QUEST-DMC concept, a surface-based direct-detection experiment using superfluid $^3$He operated below the millikelvin regime and instrumented with nanomechanical resonators read out by SQUIDs. The low recoil-energy threshold (down to sub-eV for the SQUID configuration) enables sensitivity to sub-GeV dark matter across a wide set of interaction structures beyond the canonical spin-independent and spin-dependent limits. We present projections in the non-relativistic Effective Field Theory (EFT) framework, scanning the standard set of fourteen Galilean-invariant operators and expressing reach in terms of effective dark matter-nucleon (or dark matter-neutron) cross sections. Because QUEST-DMC operates at the surface, we also account for suppression of the incident flux due to scattering in the atmosphere and Earth, which produces an interaction-dependent sensitivity ceiling at large couplings. Finally, we outline how the non-relativistic results map onto representative relativistic EFT dark matter-nucleon bilinears, enabling a compact interpretation of the projected reach in terms of UV-motivated coupling structures.
format	Preprint
id	arxiv_https___arxiv_org_abs_2602_23995
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	Probing the Dark Matter EFT with QUEST-DMC: Projected Sensitivities and Attenuation Ceilings DMC Collaboration Darvishi, N. Autti, S. Bloomfield, L. Casey, A. Eng, N. Franchini, P. Haley, R. P. Heikkinen, P. J. Jennings, A. Kemp, A. Leason, E. March-Russell, J. Mayer, A. Monroe, J. Munstermann, D. Noble, M. T. Prance, J. R. Rojas, X. Salmon, T. Saunders, J. Smirnov, J. Smith, R. Thompson, M. D. Thomson, A. Ting, A. Tsepelin, V. West, S. M. Whitehead, L. Zmeev, D. E. High Energy Physics - Phenomenology This proceedings contribution summarises projected constraints from the QUEST-DMC concept, a surface-based direct-detection experiment using superfluid $^3$He operated below the millikelvin regime and instrumented with nanomechanical resonators read out by SQUIDs. The low recoil-energy threshold (down to sub-eV for the SQUID configuration) enables sensitivity to sub-GeV dark matter across a wide set of interaction structures beyond the canonical spin-independent and spin-dependent limits. We present projections in the non-relativistic Effective Field Theory (EFT) framework, scanning the standard set of fourteen Galilean-invariant operators and expressing reach in terms of effective dark matter-nucleon (or dark matter-neutron) cross sections. Because QUEST-DMC operates at the surface, we also account for suppression of the incident flux due to scattering in the atmosphere and Earth, which produces an interaction-dependent sensitivity ceiling at large couplings. Finally, we outline how the non-relativistic results map onto representative relativistic EFT dark matter-nucleon bilinears, enabling a compact interpretation of the projected reach in terms of UV-motivated coupling structures.
title	Probing the Dark Matter EFT with QUEST-DMC: Projected Sensitivities and Attenuation Ceilings
topic	High Energy Physics - Phenomenology
url	https://arxiv.org/abs/2602.23995