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Title: Scalar direct detection: In-medium effects

Abstract

A simple extension of the Standard Model consists of a scalar field that can potentially constitute the dark matter (DM). Significant attention has been devoted to probing light O(≲10 eV) scalar DM, with a multitude of experimental proposals based on condensed matter systems as well as novel materials. However, the previously overlooked effective in-medium mixing of light scalars with longitudinal plasmons can strongly modify the original sensitivity calculations of the direct detection experiments. We implement the in-medium effects for scalar DM detection, using thermal field theory techniques, and show that the reach of a large class of direct DM detection experiments searching for light scalars is significantly reduced. This development identifies setups based on Dirac materials and tunable plasma haloscopes as particularly promising for scalar DM detection. Further, we also show that scalars with significant boost with respect to halo DM, such as those produced in the Sun, decay of other particles or by cosmic rays, will not suffer from in-medium suppression. Hence, multi-tonne direct DM detection experiments, such as those based on xenon or argon, also constitute a favorable target. We also discuss scalar mediated DM scattering.

Authors:
; ; ORCiD logo
Publication Date:
Research Org.:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1659532
Alternate Identifier(s):
OSTI ID: 1735571
Grant/Contract Number:  
SC0009937
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 809 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Gelmini, Graciela B., Takhistov, Volodymyr, and Vitagliano, Edoardo. Scalar direct detection: In-medium effects. Netherlands: N. p., 2020. Web. https://doi.org/10.1016/j.physletb.2020.135779.
Gelmini, Graciela B., Takhistov, Volodymyr, & Vitagliano, Edoardo. Scalar direct detection: In-medium effects. Netherlands. https://doi.org/10.1016/j.physletb.2020.135779
Gelmini, Graciela B., Takhistov, Volodymyr, and Vitagliano, Edoardo. Thu . "Scalar direct detection: In-medium effects". Netherlands. https://doi.org/10.1016/j.physletb.2020.135779.
@article{osti_1659532,
title = {Scalar direct detection: In-medium effects},
author = {Gelmini, Graciela B. and Takhistov, Volodymyr and Vitagliano, Edoardo},
abstractNote = {A simple extension of the Standard Model consists of a scalar field that can potentially constitute the dark matter (DM). Significant attention has been devoted to probing light O(≲10 eV) scalar DM, with a multitude of experimental proposals based on condensed matter systems as well as novel materials. However, the previously overlooked effective in-medium mixing of light scalars with longitudinal plasmons can strongly modify the original sensitivity calculations of the direct detection experiments. We implement the in-medium effects for scalar DM detection, using thermal field theory techniques, and show that the reach of a large class of direct DM detection experiments searching for light scalars is significantly reduced. This development identifies setups based on Dirac materials and tunable plasma haloscopes as particularly promising for scalar DM detection. Further, we also show that scalars with significant boost with respect to halo DM, such as those produced in the Sun, decay of other particles or by cosmic rays, will not suffer from in-medium suppression. Hence, multi-tonne direct DM detection experiments, such as those based on xenon or argon, also constitute a favorable target. We also discuss scalar mediated DM scattering.},
doi = {10.1016/j.physletb.2020.135779},
journal = {Physics Letters B},
number = C,
volume = 809,
place = {Netherlands},
year = {2020},
month = {10}
}

Journal Article:
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https://doi.org/10.1016/j.physletb.2020.135779

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