Linelike features in TeV γ 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 γ-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 γ-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 linelike spectral feature is found in our analysis. Therefore, we constrain the cross section for dark matter annihilation into two photons to ⟨σv

Search for Gamma-Ray Spectral Lines from Dark Matter Annihilation up to 100 TeV toward the Galactic Center with MAGIC

Depaoli D.;Vigorito C. F.;
2023-01-01

Abstract

Linelike features in TeV γ 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 γ-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 γ-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 linelike spectral feature is found in our analysis. Therefore, we constrain the cross section for dark matter annihilation into two photons to ⟨σv
2023
130
6
061002
061009
https://arxiv.org/abs/2212.10527
Abe H.; Abe S.; Acciari V.A.; Aniello T.; Ansoldi S.; Antonelli L.A.; Arbet Engels A.; Arcaro C.; Artero M.; Asano K.; Baack D.; Babic A.; Baquero A.; Barres De Almeida U.; Barrio J.A.; Batkovic I.; Baxter J.; Becerra Gonzalez J.; Bednarek W.; Bernardini E.; Bernardos M.; Berti A.; Besenrieder J.; Bhattacharyya W.; Bigongiari C.; Biland A.; Blanch O.; Bonnoli G.; Bosnjak A.Z.; Burelli I.; Busetto G.; Carosi R.; Carretero-Castrillo M.; Ceribella G.; Chai Y.; Chilingarian A.; Cikota S.; Colombo E.; Contreras J.L.; Cortina J.; Covino S.; D'Amico G.; D'Elia V.; Da Vela P.; Dazzi F.; De Angelis A.; De Lotto B.; Del Popolo A.; Delfino M.; Delgado J.; Delgado Mendez C.; Depaoli D.; Di Pierro F.; Di Venere L.; Do Souto Espineira E.; Dominis Prester D.; Donini A.; Dorner D.; Doro M.; Elsaesser D.; Emery G.; Fallah Ramazani V.; Farina L.; Fattorini A.; Font L.; Fruck C.; Fukami S.; Fukazawa Y.; Garcia Lopez R.J.; Garczarczyk M.; Gasparyan S.; Gaug M.; Giesbrecht Paiva J.G.; Giglietto N.; Giordano F.; Gliwny P.; Godinovic N.; Green J.G.; Green D.; Hadasch D.; Hahn A.; Hassan T.; Heckmann L.; Herrera J.; Hrupec D.; Hutten M.; Imazawa R.; Inada T.; Iotov R.; Ishio K.; Jimenez Martinez I.; Jormanainen J.; Kerszberg D.; Kobayashi Y.; Kubo H.; Kushida J.; Lamastra A.; Lelas D.; Leone F.; Lindfors E.; Linhoff L.; Lombardi S.; Longo F.; Lopez-Coto R.; Lopez-Moya M.; Lopez-Oramas A.; Loporchio S.; Lorini A.; Lyard E.; Machado De Oliveira Fraga B.; Majumdar P.; Makariev M.; Maneva G.; Mang N.; Manganaro M.; Mangano S.; Mannheim K.; Mariotti M.; Martinez M.; Mas Aguilar A.; Mazin D.; Menchiari S.; Mender S.; Micanovic S.; Miceli D.; Miener T.; Miranda J.M.; Mirzoyan R.; Molina E.; Mondal H.A.; Moralejo A.; Morcuende D.; Moreno V.; Nakamori T.; Nanci C.; Nava L.; Neustroev V.; Nievas Rosillo M.; Nigro C.; Nilsson K.; Nishijima K.; Njoh Ekoume T.; Noda K.; Nozaki S.; Ohtani Y.; Oka T.; Otero-Santos J.; Paiano S.; Palatiello M.; Paneque D.; Paoletti R.; Paredes J.M.; Pavletic L.; Persic M.; Pihet M.; Podobnik F.; Prada Moroni P.G.; Prandini E.; Principe G.; Priyadarshi C.; Puljak I.; Rhode W.; Ribo M.; Rico J.; Righi C.; Rugliancich A.; Sahakyan N.; Saito T.; Sakurai S.; Satalecka K.; Saturni F.G.; Schleicher B.; Schmidt K.; Schmuckermaier F.; Schubert J.L.; Schweizer T.; Sitarek J.; Sliusar V.; Sobczynska D.; Spolon A.; Stamerra A.; Striskovic J.; Strom D.; Strzys M.; Suda Y.; Suric T.; Takahashi M.; Takeishi R.; Tavecchio F.; Temnikov P.; Terauchi K.; Terzic T.; Teshima M.; Tosti L.; Truzzi S.; Tutone A.; Ubach S.; Van Scherpenberg J.; Vazquez Acosta M.; Ventura S.; Verguilov V.; Viale I.; Vigorito C.F.; Vitale V.; Vovk I.; Walter R.; Will M.; Wunderlich C.; Yamamoto T.; Zaric D.; Hiroshima N.; Kohri K.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1946600
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