Limiting Light Dark Matter with Luminous Hadronic Loops

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90263%2F24%3A00381460" target="_blank" >RIV/68407700:90263/24:00381460 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevLett.132.051001" target="_blank" >https://doi.org/10.1103/PhysRevLett.132.051001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.132.051001" target="_blank" >10.1103/PhysRevLett.132.051001</a>

Result language
angličtina
Original language name
Limiting Light Dark Matter with Luminous Hadronic Loops
Original language description
Dark matter is typically assumed not to couple to the photon at tree level. While annihilation to photons through quark loops is often considered in indirect detection searches, such loop-level effects are usually neglected in direct detection, as they are typically subdominant to tree-level dark-matter-nucleus scattering. However, when dark matter is lighter than around 100 MeV, it carries so little momentum that it is difficult to detect with nuclear recoils at all. We show that loops of low-energy hadronic states can generate an effective dark-matter-photon coupling, and thus lead to scattering with electrons even in the absence of tree-level dark-matter-electron scattering. For light mediators, this leads to an effective fractional electric charge that may be very strongly constrained by astrophysical observations. Current and upcoming searches for dark-matter-electron scattering can thus set limits on dark-matter-proton interactions down to 1 MeV and below.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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