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CERN Accelerating science

Article
Report number arXiv:2003.05260
Title A search for dark matter in Triangulum II with the MAGIC telescopes
Author(s)

Acciari, V.A. (IAC, La Laguna) ; Ansoldi, S. (INFN, Trieste ; Udine U. ; Tokyo U., ICRR) ; Antonelli, L.A. (INAF, Rome ; Rome U.) ; Arbet Engels, A. (ETH, Zurich (main)) ; Baack, D. (Dortmund U.) ; Babić, A. (Split Tech. U.) ; Banerjee, B. (Saha Inst.) ; Barres de Almeida, U. (Rio de Janeiro, CBPF) ; Barrio, J.A. (Madrid U.) ; Becerra González, J. (IAC, La Laguna ; Laguna U., Tenerife) ; Bednarek, W. (Lodz U.) ; Bellizzi, L. (INFN, Pisa ; Pisa U.) ; Bernardini, E. (DESY, Zeuthen ; INFN, Padua ; Padua U.) ; Berti, A. (Frascati) ; Besenrieder, J. (Munich, Max Planck Inst.) ; Bhattacharyya, W. (DESY, Zeuthen) ; Bigongiari, C. (INAF, Rome ; Rome U.) ; Biland, A. (ETH, Zurich (main)) ; Blanch, O. (Barcelona, IFAE) ; Bonnoli, G. (INFN, Pisa ; Pisa U.) ; Bošnjak, Ž. ; Busetto, G. (INFN, Padua ; Padua U.) ; Carosi, R. (INFN, Pisa ; Pisa U.) ; Ceribella, G. (Munich, Max Planck Inst.) ; Chai, Y. (Munich, Max Planck Inst.) ; Chilingarian, A. (NAS Armenia, Yerevan) ; Cikota, S. (Split Tech. U.) ; Colak, S.M. (Barcelona, IFAE) ; Colin, U. (Munich, Max Planck Inst.) ; Colombo, E. (IAC, La Laguna ; Laguna U., Tenerife) ; Contreras, J.L. (Madrid U.) ; Cortina, J. (Madrid, CIEMAT) ; Covino, S. (INAF, Rome ; Rome U.) ; D'Elia, V. (INAF, Rome ; Rome U.) ; Da Vela, P. (INFN, Pisa ; Pisa U.) ; Dazzi, F. (INAF, Rome ; Rome U.) ; De Angelis, A. (INFN, Padua ; Padua U.) ; De Lotto, B. (INFN, Trieste ; Udine U.) ; Delfino, M. (Barcelona, IFAE ; PIC, Bellaterra) ; Delgado, J. (Barcelona, IFAE ; PIC, Bellaterra) ; Depaoli, D. (Frascati) ; Di Pierro, F. (Frascati) ; Di Venere, L. (Frascati) ; Do Souto Espiñeira, E. (Barcelona, IFAE) ; Dominis Prester, D. (Split Tech. U.) ; Donini, A. (INFN, Trieste ; Udine U.) ; Dorner, D. (Wurzburg U.) ; Doro, M. (INFN, Padua ; Padua U.) ; Elsaesser, D. (Dortmund U.) ; Fallah Ramazani, V. (Turku U.) ; Fattorini, A. (Dortmund U.) ; Ferrara, G. (INAF, Rome ; Rome U.) ; Fidalgo, D. (Madrid U.) ; Foffano, L. (INFN, Padua ; Padua U.) ; Fonseca, M.V. (Madrid U.) ; Font, L. (Barcelona, Autonoma U.) ; Fruck, C. (Munich, Max Planck Inst.) ; Fukami, S. (Tokyo U., ICRR) ; García López, R.J. (IAC, La Laguna ; Laguna U., Tenerife) ; Garczarczyk, M. (DESY, Zeuthen) ; Gasparyan, S. (NAS Armenia, Yerevan) ; Gaug, M. (Barcelona, Autonoma U.) ; Giglietto, N. (Frascati) ; Giordano, F. (Frascati) ; Gliwny, P. (Lodz U.) ; Godinović, N. (Split Tech. U.) ; Green, D. (Munich, Max Planck Inst.) ; Green, J.G. (INAF, Rome ; Rome U.) ; Guberman, D. (Barcelona, IFAE) ; Hadasch, D. (Tokyo U., ICRR) ; Hahn, A. (Munich, Max Planck Inst.) ; Herrera, J. (IAC, La Laguna ; Laguna U., Tenerife) ; Hoang, J. (Madrid U.) ; Hrupec, D. (Split Tech. U.) ; Hütten, M. (Munich, Max Planck Inst.) ; Inada, T. (Tokyo U., ICRR) ; Inoue, S. (Tokyo U., ICRR) ; Ishio, K. (Munich, Max Planck Inst.) ; Iwamura, Y. (Tokyo U., ICRR) ; Jouvin, L. (Barcelona, IFAE) ; Kerszberg, D. (Barcelona, IFAE) ; Kubo, H. (Tokyo U., ICRR) ; Kushida, J. (Tokyo U., ICRR) ; Lamastra, A. (INAF, Rome ; Rome U.) ; Lelas, D. (Split Tech. U.) ; Leone, F. (INAF, Rome ; Rome U.) ; Lindfors, E. (Turku U.) ; Lombardi, S. (INAF, Rome ; Rome U.) ; Longo, F. (INFN, Trieste ; Udine U. ; Trieste U.) ; López, M. (Madrid U.) ; López-Coto, R. (INFN, Padua ; Padua U.) ; López-Oramas, A. (IAC, La Laguna ; Laguna U., Tenerife) ; Loporchio, S. (Frascati) ; Machado de Oliveira Fraga, B. (Rio de Janeiro, CBPF) ; Maggio, C. (Barcelona, Autonoma U.) ; Majumdar, P. (Saha Inst.) ; Makariev, M. (Sofiya, Inst. Nucl. Res.) ; Mallamaci, M. (INFN, Padua ; Padua U.) ; Maneva, G. (Sofiya, Inst. Nucl. Res.) ; Manganaro, M. (Split Tech. U.) ; Mannheim, K. (Wurzburg U.) ; Maraschi, L. (INAF, Rome ; Rome U.) ; Mariotti, M. (INFN, Padua ; Padua U.) ; Martínez, M. (Barcelona, IFAE) ; Mazin, D. (Munich, Max Planck Inst. ; Tokyo U., ICRR) ; Mićanović, S. (Split Tech. U.) ; Miceli, D. (INFN, Trieste ; Udine U.) ; Miener, T. (Madrid U.) ; Minev, M. (Sofiya, Inst. Nucl. Res.) ; Miranda, J.M. (INFN, Pisa ; Pisa U.) ; Mirzoyan, R. (Munich, Max Planck Inst.) ; Molina, E. (ICC, Barcelona U.) ; Moralejo, A. (Barcelona, IFAE) ; Morcuende, D. (Madrid U.) ; Moreno, V. (Barcelona, Autonoma U.) ; Moretti, E. (Barcelona, IFAE) ; Munar-Adrover, P. (Barcelona, Autonoma U.) ; Neustroev, V. (Turku U.) ; Nigro, C. (DESY, Zeuthen) ; Nilsson, K. (Turku U.) ; Ninci, D. (Barcelona, IFAE) ; Nishijima, K. (Tokyo U., ICRR) ; Noda, K. (Tokyo U., ICRR) ; Nogués, L. (Barcelona, IFAE) ; Nozaki, S. (Tokyo U., ICRR) ; Paiano, S. (INFN, Padua ; Padua U.) ; Palacio, J. (Barcelona, IFAE) ; Palatiello, M. (INFN, Trieste ; Udine U.) ; Paneque, D. (Munich, Max Planck Inst.) ; Paoletti, R. (INFN, Pisa ; Pisa U.) ; Paredes, J.M. (ICC, Barcelona U.) ; Peñil, P. (Madrid U.) ; Peresano, M. (INFN, Trieste ; Udine U.) ; Persic, M. (INFN, Trieste ; Udine U. ; U. Bologna, DIFA ; Trieste Observ.) ; Prada Moroni, P.G. (INFN, Pisa ; Pisa U.) ; Prandini, E. (INFN, Padua ; Padua U.) ; Puljak, I. (Split Tech. U.) ; Rhode, W. (Dortmund U.) ; Ribó, M. (ICC, Barcelona U.) ; Rico, J. (Barcelona, IFAE) ; Righi, C. (INAF, Rome ; Rome U.) ; Rugliancich, A. (INFN, Pisa ; Pisa U.) ; Saha, L. (Madrid U.) ; Sahakyan, N. (NAS Armenia, Yerevan) ; Saito, T. (Tokyo U., ICRR) ; Sakurai, S. (Tokyo U., ICRR) ; Satalecka, K. (DESY, Zeuthen) ; Saturni, F.G. (INAF, Rome ; Rome U.) ; Schmidt, K. (Dortmund U.) ; Schweizer, T. (Munich, Max Planck Inst.) ; Sitarek, J. (Lodz U.) ; Šnidarić, I. (Split Tech. U.) ; Sobczynska, D. (Lodz U.) ; Somero, A. (IAC, La Laguna ; Laguna U., Tenerife) ; Stamerra, A. (INAF, Rome ; Rome U.) ; Strom, D. (Munich, Max Planck Inst.) ; Suda, Y. (Munich, Max Planck Inst.) ; Surić, T. (Split Tech. U.) ; Takahashi, M. (Tokyo U., ICRR) ; Tavecchio, F. (INAF, Rome ; Rome U.) ; Temnikov, P. (Sofiya, Inst. Nucl. Res.) ; Terzić, T. (Split Tech. U.) ; Teshima, M. (Munich, Max Planck Inst. ; Tokyo U., ICRR) ; Torres-Albà, N. (ICC, Barcelona U.) ; Tosti, L. (Frascati) ; Vagelli, V. (Frascati) ; van Scherpenberg, J. (Munich, Max Planck Inst.) ; Vanzo, G. (IAC, La Laguna ; Laguna U., Tenerife) ; Vazquez Acosta, M. (IAC, La Laguna ; Laguna U., Tenerife) ; Vigorito, C.F. (Frascati) ; Vitale, V. (Frascati) ; Vovk, I. (Munich, Max Planck Inst.) ; Will, M. (Munich, Max Planck Inst.) ; Zarić, D. (Split Tech. U.)

Publication 2020-05
Imprint 2020-03-11
Number of pages 14
Note 14 pages, 8 figures, accepted for publication in Physics of the Dark Universe
In: Phys. Dark Univ. 28 (2020) pp.100529
DOI 10.1016/j.dark.2020.100529 (publication)
Subject category hep-ph ; Particle Physics - Phenomenology ; astro-ph.HE ; Astrophysics and Astronomy
Abstract We present the first results from very-high-energy observations of the dwarf spheroidal satellite candidate Triangulum II with the MAGIC telescopes from 62.4 hours of good-quality data taken between August 2016 and August 2017. We find no gamma-ray excess in the direction of Triangulum II, and upper limits on both the differential and integral gamma-ray flux are presented. Currently, the kinematics of Triangulum II are affected by large uncertainties leading to a bias in the determination of the properties of its dark matter halo. Using a scaling relation between the annihilation J-factor and heliocentric distance of well-known dwarf spheroidal galaxies, we estimate an annihilation J-factor for Triangulum II for WIMP dark matter of $\log[J_{\text{ann}}({0.5^{\circ}})/$ GeV$^{2}$ cm$^{-5}] = 19.35 \pm 0.37$. We also derive a dark matter density profile for the object relying on results from resolved simulations of Milky Way sized dark matter halos. We obtain 95% confidence-level limits on the thermally averaged annihilation cross section for WIMP annihilation into various Standard Model channels. The most stringent limits are obtained in the $\tau^{+}\tau^{-}$ final state, where a cross section for annihilation down to $\langle \sigma_{\text{ann}} v \rangle = 3.05 \times 10^{-24}$ cm$^{3}$ s$^{-1}$ is excluded.
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
Elsevier B.V.



Corresponding record in: Inspire


 Record created 2020-03-17, last modified 2020-06-15


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