Dark matter line searches with the Cherenkov Telescope Array

(CTAO Consortium) Abe, S; Abhir, J; Abhishek, A; Acero, F; Acharyya, A; Adam, R; Aguasca-Cabot, A; Agudo, I; Aguirre-Santaella, A; Alfaro, J; Alfaro, R; Alvarez-Crespo, N; Batista, RA; Amans, JP; Amato, E; Ambrosi, G; Angel, L; Aramo, C; Arcaro, C; Arnesen, TTH; Arrabito, L; Asano, K; Ascasibar, Y; Aschersleben, J; Ashkar, H; Backes, M; Baktash, A; Balazs, C; Balbo, M; Larriva, AB; Martins, VB; de Almeida, UB; Barrio, JA; Batkovic, I; Batzofin, R; Baxter, J; González, JB; Beck, G; Benbow, W; Berge, D; Bernardini, E; Bernete, J; Bernlöhr, K; Berti, A; Bertucci, B; Bhattacharjee, P; Bhattacharyya, S; Bigongiari, C; Biland, A; Bissaldi, E; Biteau, J; Blanch, O; Blazek, J; Bocchino, F; Boisson, C; Bolmont, J; Bonnoli, G; Bonollo, A; Bordas, P; Bosnjak, Z; Bottacini, E; Böttcher, M; Bringmann, T; Bronzini, E; Brose, R; Brown, AM; Brunelli, G; Bulgarelli, A; Bulik, T; Burelli, I; Burmistrov, L; Burton, M; Buscemi, M; Bylund, T; Cailleux, J; Campoy-Ordaz, A; Cantlay, BK; Capasso, G; Caproni, A; Capuzzo-Dolcetta, R; Caraveo, P; Caroff, S; Carosi, A; Carosi, R; Carquin, E; Carrasco, MS; Cassol, F; Castaldini, L; Castrejon, N; Castro-Tirado, AJ; Cerasole, D; Cerruti, M; Chadwick, PM; Chaty, S; Chen, AW; Chernyakova, M; Chiavassa, A; Chudoba, J; Chytka, L; Cicciari, GM; Cifuentes, A; Araujo, CHC; Colapietro, M; Conforti, V; Conte, F; Contreras, JL; Costa, A; Costantini, H; Cotter, G; Cristofari, P; Cuevas, O; Curtis-Ginsberg, Z; D'Amico, G; D'Ammando, F; Dai, S; Dalchenko, M; Dazzi, F; De Angelis, A; de Lavergne, MD; De Caprio, V; Dal Pino, EMD; De Lotto, B; De Lucia, M; de Menezes, R; de Naurois, M; de Souza, V; del Peral, L; del Valle, MV; Giler, AGD; Mengual, JD; Delgado, C; Dell'aiera, M; della Volpe, D; Depaoli, D; Di Girolamo, T; Di Piano, A; Di Pierro, F; Di Tria, R; Di Venere, L; Díaz, C; Diebold, S; Dinesh, A; Djuvsland, J; Dominik, RM; Prester, DD; Donini, A; Dorner, D; Dörner, J; Doro, M; Dournaux, JL; Duangchan, C; Dubos, C; Ducci, L; Dwarkadas, VV; Ebr, J; Eckner, C; Egberts, K; Einecke, S; Elsässer, D; Emery, G; Errando, M; Escanuela, C; Escarate, P; Godoy, ME; Escudero, J; Esposito, P; Ettori, S; Falceta-Goncalves, D; Fedorova, E; Fegan, S; Feng, Q; Ferrand, G; Ferrarotto, F; Fiandrini, E; Fiasson, A; Filipovic, M; Fioretti, V; Fiori, M; Foffano, L; Guiteras, LF; Fontaine, G; Fröse, S; Fukazawa, Y; Fukui, Y; Furniss, A; Galanti, G; Galaz, G; Galelli, C; Gallozzi, S; Gammaldi, V; Garczarczyk, M; Gasbarra, C; Gasparrini, D; Ghalumyan, A; Gianotti, F; Giarrusso, M; Paiva, JGGF; Giglietto, N; Giordano, F; Giuffrida, R; Glicenstein, JF; Glombitza, J; Goldoni, P; González, JM; González, MM; Coelho, JG; Gradetzke, T; Granot, J; Grasso, D; Grau, R; Gréaux, L; Green, D; Green, JG; Grolleron, G; Guedes, LMV; Gueta, O; Hackfeld, J; Hadasch, D; Hamal, P; Hanlon, W; Hara, S; Harvey, VM; Hassan, T; Hayashi, K; Hess, B; Heckmann, L; Heller, M; Cadena, SH; Hervet, O; Hinton, J; Hiroshima, N; Hnatyk, B; Hnatyk, R; Hofmann, W; Holder, J; Horan, D; Horvath, P; Hovatta, T; Hrabovsky, M; Hrupec, D; Iarlori, M; Inada, T; Incardona, F; Inoue, S; Inoue, Y; Iocco, F; Iori, M; Ishio, K; Jamrozy, M; Janecek, P; Jankowsky, F; Jean, P; Quiles, JJ; Jin, W; Juramy-Gilles, C; Jurysek, J; Kagaya, M; Kalekin, O; Karas, V; Katagiri, H; Kataoka, J; Kaufmann, S; Kazanas, D; Kerszberg, D; Kieda, DB; Kleiner, T; Kluge, G; Kobayashi, Y; Kohri, K; Komin, N; Kornecki, P; Kosack, K; Kowal, G; Kubo, H; Kushida, J; La Barbera, A; La Palombara, N; Láinez, M; Lamastra, A; Lapington, J; Laporte, P; Lazarevic, S; Lazendic-Galloway, J; Lemoine-Goumard, M; Lenain, JP; Leone, F; Leonora, E; Leto, G; Lindfors, E; Linhoff, M; Liodakis, I; Lipniacka, A; Lombardi, S; Longo, F; López-Coto, R; López-Moya, M; López-Oramas, A; Loporchio, S; Bahilo, JL; Luque-Escamilla, PL; Macias, O; Majumdar, P; Mallamaci, M; Malyshev, D; Mandat, D; Manicò, G; Mariotti, M; Márquez, I; Marquez, P; Marsella, G; Martí, J; Martínez, GA; Martínez, M; Martinez, O; Marty, C; Mas-Aguilar, A; Mastropietro, M; Mazin, D; Menchiari, S; Mestre, E; Meunier, JL; Meyer, DMA; Meyer, M; Miceli, D; Miceli, M; Michailidis, M; Michalowski, J; Miener, T; Miranda, JM; Mitchell, A; Mizote, M; Mizuno, T; Moderski, R; Molero, M; Molfese, C; Molina, E; Montaruli, T; Moralejo, A; Morcuende, D; Morselli, A; Moulin, E; Zamanillo, VM; Munari, K; Murach, T; Muraczewski, A; Muraishi, H; Nakamori, T; Nayak, A; Nemmen, R; Neto, JP; Nickel, L; Niemiec, J; Nieto, D; Rosillo, MN; Nikolajuk, M; Nikolic, L; Nishijima, K; Noda, K; Nosek, D; Novotny, V; Nozaki, S; Ohishi, M; Ohtani, Y; Okumura, A; Olive, JF; Ong, RA; Orienti, M; Orito, R; Orlandini, M; Orlando, E; Orlando, S; Ostrowski, M; Otero-Santos, J; Oya, I; Pagano, I; Pagliaro, A; Palatiello, M; Panebianco, G; Paneque, D; Pantaleo, FR; Paredes, JM; Parmiggiani, N; Patricelli, B; Pe'er, A; Pech, M; Pecimotika, M; Pensec, U; Peresano, M; Pérez-Romero, J; Persic, M; Peters, KP; Petruk, O; Piano, G; Pierre, E; Pietropaolo, E; Pihet, M; Pinchbeck, L; Pirola, G; Pittori, C; Plard, C; Podobnik, F; Pohl, M; Pollet, V; Ponti, G; Prandini, E; Principe, G; Priyadarshi, C; Produit, N; Prouza, M; Pueschel, E; Pühlhofer, G; Pumo, ML; Queiroz, F; Quirrenbach, A; Rainò, S; Rando, R; Razzaque, S; Regeard, M; Reimer, A; Reimer, O; Reisenegger, A; Rhode, W; Ribeiro, D; Ribó, M; Ricci, C; Richtler, T; Rico, J; Rieger, F; Riitano, L; Rizi, V; Roache, E; Fernandez, GR; Frías, MDR; Rodríguez-Vázquez, JJ; Romano, P; Romeo, G; Rosado, J; de Leon, AR; Rowell, G; Rudak, B; Ruiter, AJ; Rulten, CB; Sadeh, I; Saha, L; Saito, T; Salzmann, H; Sánchez-Conde, M; Sandaker, H; Sangiorgi, P; Sano, H; Santander, M; Santos-Lima, R; Sapienza, V; Saric, T; Sarkar, A; Sarkar, S; Saturni, FG; Savarese, S; Scherer, A; Schiavone, F; Schipani, P; Schleicher, B; Schovanek, P; Schubert, JL; Schwanke, U; Arroyo, MS; Seitenzahl, IR; Sergijenko, O; Servillat, M; Siegert, T; Siejkowski, H; Siqueira, C; Sliusar, V; Slowikowska, A; Sol, H; Spencer, ST; Spiga, D; Stamerra, A; Stanic, S; Starecki, T; Starling, R; Stawarz, L; Steppa, C; Hatlen, ES; Stolarczyk, T; Striskovic, J; Suda, Y; Swierk, P; Tajima, H; Tak, D; Takahashi, M; Takeishi, R; Tavernier, T; Tejedor, LA; Terauchi, K; Teshima, M; Testa, V; Tian, WW; Tibaldo, L; Tibolla, O; Peixoto, CJT; Torradeflot, F; Torres, DF; Tosti, G; Tothill, N; Toussenel, F; Tramacere, A; Travnicek, P; Tripodo, G; Trois, A; Truzzi, S; Tutone, A; Vaclavek, L; Vacula, M; Vallania, P; Vallés, R; van Eldik, C; van Scherpenberg, J; Vandenbroucke, J; Vassiliev, V; Acosta, MV; Vecchi, M; Ventura, S; Vercellone, S; Verna, G; Viana, A; Viaux, N; Vigliano, A; Vignatti, J; Vigorito, CF; Villanueva, J; Visentin, E; Vitale, V; Vodeb, V; Voisin, V; Voitsekhovskyi, V; Vorobiov, S; Voutsinas, G; Vovk, I; Vuillaume, T; Wagner, SJ; Walter, R; White, M; White, R; Wierzcholska, A; Will, M; Williams, DA; Wohlleben, F; Wolter, A; Yamamoto, T; Yang, L; Yoshida, T; Yoshikoshi, T; Zaharijas, G; Zampieri, L; Sanchez, RZ; Zavrtanik, D; Zavrtanik, M; Zdziarski, AA; Zech, A; Zhang, W; Zhdanov, VI; Zietara, K; Zivec, M; Zuriaga-Puig, J (2024) Dark matter line searches with the Cherenkov Telescope Array. Journal of Cosmology and Astroparticle Physics, 2024 (07). ISSN 1475-7516

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Abstract

Monochromatic gamma-ray signals constitute a potential smoking gun signature for annihilating or decaying dark matter particles that could relatively easily be distinguished from astrophysical or instrumental backgrounds. We provide an updated assessment of the sensitivity of the Cherenkov Telescope Array (CTA) to such signals, based on observations of the Galactic centre region as well as of selected dwarf spheroidal galaxies. We find that current limits and detection prospects for dark matter masses above 300 GeV will be significantly improved, by up to an order of magnitude in the multi-TeV range. This demonstrates that CTA will set a new standard for gamma-ray astronomy also in this respect, as the world's largest and most sensitive high-energy gamma-ray observatory, in particular due to its exquisite energy resolution at TeV energies and the adopted observational strategy focussing on regions with large dark matter densities. Throughout our analysis, we use up-to-date instrument response functions, and we thoroughly model the effect of instrumental systematic uncertainties in our statistical treatment. We further present results for other potential signatures with sharp spectral features, e.g. box-shaped spectra, that would likewise very clearly point to a particle dark matter origin.

Item Type:	Article
Uncontrolled Keywords:	dark matter experiments; dark matter theory; gamma ray experiments
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Center for Informatics and Computing
Depositing User:	Ema Buhin Šaler
Date Deposited:	20 Apr 2026 12:13
URI:	https://fulir.irb.hr:/id/eprint/11765
DOI:	10.1088/1475-7516/2024/07/047

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