Linelike 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 linelike spectral feature is found in our analysis. Therefore, we constrain the cross section for dark matter annihilation into two photons to (sigma v) less than or similar to 5 x 10-28 cm3 s-1 at 1 TeV and (sigma v) less than or similar to 1 x 10-25 cm3 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.
Search for Gamma-Ray Spectral Lines from Dark Matter Annihilation up to 100 TeV toward the Galactic Center with MAGIC / 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; Babić, A; Baquero, A; Barres de Almeida, U; Barrio, J A; Batković, I; Baxter, J; Becerra González, J; Bednarek, W; Bernardini, E; Bernardos, M; Berti, A; Besenrieder, J; Bhattacharyya, W; Bigongiari, C; Biland, A; Blanch, O; Bonnoli, G; Bošnjak, Ž; 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 Espiñeira, E; Dominis Prester, D; Donini, A; Dorner, D; Doro, M; Elsaesser, D; Emery, G; Fallah Ramazani, V; Fariña, L; Fattorini, A; Font, L; Fruck, C; Fukami, S; Fukazawa, Y; García López, R J; Garczarczyk, M; Gasparyan, S; Gaug, M; Giesbrecht Paiva, J G; Giglietto, N; Giordano, F; Gliwny, P; Godinović, N; Green, J G; Green, D; Hadasch, D; Hahn, A; Hassan, T; Heckmann, L; Herrera, J; Hrupec, D; Hütten, M; Imazawa, R; Inada, T; Iotov, R; Ishio, K; Jiménez Martínez, 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; López-Coto, R; López-Moya, M; López-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; Martínez, M; Mas Aguilar, A; Mazin, D; Menchiari, S; Mender, S; Mićanović, 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; Pavletić, L; Persic, M; Pihet, M; Podobnik, F; Prada Moroni, P G; Prandini, E; Principe, G; Priyadarshi, C; Puljak, I; Rhode, W; Ribó, 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; Strišković, J; Strom, D; Strzys, M; Suda, Y; Surić, T; Takahashi, M; Takeishi, R; Tavecchio, F; Temnikov, P; Terauchi, K; Terzić, 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; Zarić, D; Hiroshima, N; Kohri, K. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 130:6(2023), p. 061002. [10.1103/PhysRevLett.130.061002]
Search for Gamma-Ray Spectral Lines from Dark Matter Annihilation up to 100 TeV toward the Galactic Center with MAGIC
Giglietto, NMembro del Collaboration Group
;Loporchio, SMembro del Collaboration Group
;
2023-01-01
Abstract
Linelike 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 linelike spectral feature is found in our analysis. Therefore, we constrain the cross section for dark matter annihilation into two photons to (sigma v) less than or similar to 5 x 10-28 cm3 s-1 at 1 TeV and (sigma v) less than or similar to 1 x 10-25 cm3 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
