Journal article
Constraining light thermal inelastic dark matter with NA64
The European physical journal. C, Particles and fields, Vol.83(5), 391
05/01/2023
DOI: 10.1140/epjc/s10052-023-11536-5
PMCID: PMC10172231
PMID: 37180830
Abstract
A vector portal between the Standard Model and the dark sector is a predictive and compelling framework for thermal dark matter. Through co-annihilations, models of inelastic dark matter (iDM) and inelastic Dirac dark matter (i2DM) can reproduce the observed relic density in the MeV to GeV mass range without violating cosmological limits. In these scenarios, the vector mediator behaves like a semi-visible particle, evading traditional bounds on visible or invisible resonances, and uncovering new parameter space to explain the muon (g - 2) anomaly. By means of a more inclusive signal definition at the NA64 experiment, we place new constraints on iDM and i2DM using a missing energy technique. With a recast-based analysis, we contextualize the NA64 exclusion limits in parameter space and estimate the reach of the newly collected and expected future NA64 data. Our results motivate the development of an optimized search program for semi-visible particles, in which fixed target experiments like NA64 provide a powerful probe in the sub-GeV mass range.
Details
- Title: Subtitle
- Constraining light thermal inelastic dark matter with NA64
- Creators
- Martina Mongillo - ETH ZurichAsli Abdullahi - Fermi National Accelerator LaboratoryBenjamin Banto Oberhauser - ETH ZurichPaolo Crivelli - ETH ZurichMatheus Hostert - Perimeter InstituteDaniele Massaro - University of BolognaLaura Molina Bueno - Instituto de Física CorpuscularSilvia Pascoli - Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
- Resource Type
- Journal article
- Publication Details
- The European physical journal. C, Particles and fields, Vol.83(5), 391
- DOI
- 10.1140/epjc/s10052-023-11536-5
- PMID
- 37180830
- PMCID
- PMC10172231
- NLM abbreviation
- Eur Phys J C Part Fields
- ISSN
- 1434-6044
- eISSN
- 1434-6052
- Publisher
- Springer Nature
- Number of pages
- 14
- Grant note
- H2020-MSCA-ITN-2019/860881-HIDDeN (ITN HIDDeN) / European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant; Marie Curie Actions Province of Ontario through the Ministry of Economic Development, Job Creation and Trade, MEDT 169133; 186181; 186158; 197346; RyC-030551-I / SNSF; Swiss National Science Foundation (SNSF) Government of Canada through NSERC; Natural Sciences and Engineering Research Council of Canada (NSERC) 101086085-ASYMMETRY / European Union's Horizon Europe research and innovation programme under the Marie Sklodowska-Curie Staff Exchange Grant; European Union (EU) ETH Zuerich
- Language
- English
- Date published
- 05/01/2023
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984945916202771
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