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000491459 005__ 20230820024444.0
000491459 0247_ $$2INSPIRETeX$$aMAGIC:2022acl
000491459 0247_ $$2inspire$$ainspire:2616525
000491459 0247_ $$2arXiv$$aarXiv:2212.10527
000491459 0247_ $$2altmetric$$aaltmetric:140376404
000491459 037__ $$aPUBDB-2023-00168
000491459 041__ $$aEnglish
000491459 088__ $$2arXiv$$aarXiv:2212.10527
000491459 088__ $$2KEK$$aKEK-TH-2487
000491459 088__ $$2KEK$$aKEK-Cosmo-0307
000491459 1001_ $$0H.Abe.4$$aAbe, H.$$b0
000491459 245__ $$aSearch for Gamma-ray Spectral Lines from Dark Matter Annihilation up to 100 TeV towards the Galactic Center with MAGIC
000491459 260__ $$c2022
000491459 3367_ $$0PUB:(DE-HGF)25$$2PUB:(DE-HGF)$$aPreprint$$bpreprint$$mpreprint$$s1673967357_8619
000491459 3367_ $$2ORCID$$aWORKING_PAPER
000491459 3367_ $$028$$2EndNote$$aElectronic Article
000491459 3367_ $$2DRIVER$$apreprint
000491459 3367_ $$2BibTeX$$aARTICLE
000491459 3367_ $$2DataCite$$aOutput Types/Working Paper
000491459 500__ $$aAccepted in Phys. Rev. Lett., includes Supplemental materials. 9+4 pages, 3+3 figures, 3 tables. Corresponding authors: T. Inada, D. Kerszberg, M. Hütten
000491459 520__ $$aLine-like features in TeV $\gamma$-rays constitute a ''smoking gun'' for TeV-scale particle dark matter and new physics. Probing the Galactic Center region with ground-based Cherenkov telescopes enables the search for TeV spectral features in immediate association with a dense dark matter reservoir at a sensitivity out of reach for satellite $\gamma$-ray detectors, and direct detection and collider experiments. We report on 223 hours of observations of the Galactic Center region with the MAGIC stereoscopic telescope system reaching $\gamma$-ray energies up to 100 TeV. We improved the sensitivity to spectral lines at high energies using large-zenith-angle observations and a novel background modeling method within a maximum-likelihood analysis in the energy domain. No line-like spectral feature is found in our analysis. Therefore, we constrain the cross section for dark matter annihilation into two photons to $\langle \sigma v \rangle \lesssim 5 \times 10^{-28}\,\mathrm{cm^3\,s^{-1}}$ at 1 TeV and $\langle \sigma v \rangle \lesssim 1 \times 10^{-25}\,\mathrm{cm^3\,s^{-1}}$ at 100 TeV, achieving the best limits to date for a dark matter mass above 20 TeV and a cuspy dark matter profile at the Galactic Center. Finally, we use the derived limits for both cuspy and cored dark matter profiles to constrain supersymmetric wino models.
000491459 536__ $$0G:(DE-HGF)POF4-613$$a613 - Matter and Radiation from the Universe (POF4-613)$$cPOF4-613$$fPOF IV$$x0
000491459 588__ $$aDataset connected to INSPIRE
000491459 650_7 $$2INSPIRE$$adark matter: annihilation
000491459 650_7 $$2INSPIRE$$aenergy: high
000491459 650_7 $$2INSPIRE$$adark matter: mass
000491459 650_7 $$2INSPIRE$$ascale: TeV
000491459 650_7 $$2INSPIRE$$aup: annihilation
000491459 650_7 $$2INSPIRE$$aspectral
000491459 650_7 $$2INSPIRE$$agalaxy
000491459 650_7 $$2INSPIRE$$aMAGIC
000491459 650_7 $$2INSPIRE$$asensitivity
000491459 650_7 $$2INSPIRE$$asatellite
000491459 650_7 $$2INSPIRE$$adirect detection
000491459 650_7 $$2INSPIRE$$atwo-photon
000491459 650_7 $$2INSPIRE$$abackground
000491459 650_7 $$2INSPIRE$$anew physics
000491459 650_7 $$2INSPIRE$$aCherenkov counter
000491459 650_7 $$2INSPIRE$$asupersymmetry
000491459 650_7 $$2INSPIRE$$agamma ray
000491459 693__ $$0EXP:(DE-H253)MAGIC-20170101$$5EXP:(DE-H253)MAGIC-20170101$$eMajor Atmospheric Gamma Imaging Cherenkov$$x0
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