Search for Dark Matter Annihilation Signals in the H.E.S.S. Inner Galaxy Survey

Abdalla, H.; Aharonian, F.; Benkhali, F. Ait; Angüner, E. O.; Armand, Céline; Ashkar, Halim; Backes, Michael; Baghmanyan, Vardan; Martins, Victor Barbosa; Batzofin, Rowan; Becherini, Y.; Berge, D.; Bernlöhr, K.; Bi, Baiyang; Böttcher, M.; Bolmont, J.; Lavergne, Mathieu de Bony de; Brose, Robert; Brun, F.; Cangemi, F.; Caroff, S.; Cerruti, M.; Chand, T.; Chen, A.; Cotter, Garret; Mbarubucyeye, J. Damascene; Devin, J.; Djannati‐Ataï, A.; Dmytriiev, A.; Doroshenko, V.; Egberts, K.; Fiaßon, A.; Clairfontaine, G. Fichet de; Fontaine, G.; Funk, Sebastian; Gabici, S.; Giavitto, G.; Glawion, D.; Glicenstein, J. F.; Grondin, M.-H.; Hinton, Jim; Hofmann, W.; Holch, T. L.; Holler, M.; Horns, D.; Huang, Zhiqiu; Jamrozy, M.; Jankowsky, F.; Kasai, E.; Katarzyński, K.; Katz, U.; Khélifi, B.; Kluźniak, W.; Komin, Nu.; Kosack, K.; Kostunin, D.; Lamanna, G.; Lemoine‐Goumard, M.; Lenain, J.‐P.; Leuschner, Fabian; Löhse, T.; Luashvili, Anna; Lypova, I.; Mackey, Jonathan; Malyshev, D.; Malyshev, D.; Marandon, V.; Marchegiani, ¶.; Martí-Devesa, G.; Marx, R.; Maurin, G.; Meyer, M.; Mitchell, Alison; Moderski, R.; Montanari, A.; Moulin, Emmanuel; Müller, J.; Naurois, M. de; Niemiec, J.; Noel, A. Priyana; Ohm, S.; Olivera-Nieto, Laura; Wilhelmi, E. de Oña; Ostrowski, M.; Panny, Sebastian; Panter, M.; Parsons, R. D.; Peron, Giada; Poireau, V.; Prokoph, H.; Pühlhofer, G.; Punch, M.; Quirrenbach, A.; Reichherzer, Patrick; Reimer, A.; Reimer, O.; Renaud, M.; Rieger, F.; Rowell, G.; Rudak, B.; Ricarte, Hector Rueda; Ruiz-Velasco, E.; Sahakian, V.; Salzmann, Heiko; Santangelo, A.; Sasaki, M.; Schüßler, F.; Schutte, H. M.; Schwanke, U.; Senniappan, M.; Shapopi, J. N. S.; Sol, H.; Specovius, A.; Spencer, S.; Stawarz, Ł.; Stegmann, C.; Steinmassl, Simon; Steppa, C.; Takahashi, Tadayuki; Tanaka, T.; Terrier, R.; Thorpe-Morgan, Charles; Tluczykont, M.; Tsirou, M.; Tsuji, N.; Uchiyama, Y.; Eldik, C. van; Veh, J.; Vink, Jacco; Wagner, S. J.; White, R.; Wierzcholska, A.; Wong, Yu Wun; Zacharias, M.; Zargaryan, Davit; Zdziarski, A. A.; Zech, A.; Zhu, Sylvia; Zouari, Samuel; Żywucka, N.

doi:10.1103/physrevlett.129.111101

Cited by 25 publications

(28 citation statements)

References 36 publications

(39 reference statements)

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“…ID" label), where we combine different limits of indirect detection of DM, such as MAGIC and Fermi-LAT observations [182], and H.E.S.S. [183]. We also included bounds from the analysis derived from CMB observations [184], and antiproton AMS-02 data [185].…”

Section: Dark Matter Genesismentioning

confidence: 99%

From WIMPs to FIMPs with low reheating temperatures

Silva-Malpartida,

Bernal,

Jones-Pérez

et al. 2023

J. Cosmol. Astropart. Phys.

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Weakly- and Feebly-Interacting Massive Particles (WIMPs and FIMPs) are among the best-motivated dark matter (DM) candidates. In this paper, we investigate the production of DM through the WIMP and FIMP mechanisms during inflationary reheating. We show that the details of the reheating, such as the inflaton potential and the reheating temperature, have a strong impact on the genesis of DM. The strong entropy injection caused by the inflaton decay has to be compensated by a reduction of the portal coupling in the case of WIMPs, or by an increase in the case of FIMPs. We pinpoint the smooth transition between the WIMP and the FIMP regimes in the case of low reheating temperature. As an example, we perform a full numerical analysis of the singlet-scalar DM model; however, our results are generic and adaptable to other particle DM candidates. Interestingly, in the singlet-scalar DM model with low-reheating temperature, regions favored by the FIMP mechanism are already being tested by direct detection experiments such as LZ and XENONnT.

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Section: Dark Matter Genesismentioning

confidence: 99%

From WIMPs to FIMPs with low reheating temperatures

Silva-Malpartida,

Bernal,

Jones-Pérez

et al. 2023

J. Cosmol. Astropart. Phys.

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show abstract

“…The scaled velocity-weighted cross section can be seen in figure 5. The Fermi-LAT limits from dwarfspheroidal galaxies [70], HESS limits from the Galactic centre [78], and the IceCube and ANTARES [29,30] limits on the resulting neutrino spectra are implemented, and for specific annihilation channels indicated by the solid blue lines in figure 5. In order to be conservative, we do not include the limits on the velocity-weighted annihilation cross section arising from antiproton limits due to large inherent hadronization and propagation uncertainties [19][20][21][22][23][24][25][26][27].…”

Section: Indirect-detection Limitsmentioning

confidence: 99%

Non-standard neutrino spectra from annihilating neutralino dark matter

et al. 2023

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Neutrino telescope experiments are rapidly becoming more competitive in indirect detection searches for dark matter. Neutrino signals arising from dark matter annihilations are typically assumed to originate from the hadronisation and decay of Standard Model particles. Here we showcase a supersymmetric model, the BLSSMIS, that can simultaneously obey current experimental limits while still providing a potentially observable non-standard neutrino spectrum from dark matter annihilation.

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“…In this work, we will derive constraints on σv at 95% confidence level which corresponds to a criterion value TS = 2.71, in the case of a one-sided test and following previous γ-ray telescope analyses such as [24,25,42,43]. The total likelihood function L is the product of a Poisson likelihood L P i on the events of all energy bins i with a log-normal distribution L J of the J-factor, which reads…”

Section: Jcap11(2022)055mentioning

confidence: 99%

Dark matter indirect detection limits from complete annihilation patterns

Armand

Herrmann

2022

J. Cosmol. Astropart. Phys.

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While cosmological and astrophysical probes suggest that dark matter would make up for 85% of the total matter content of the Universe, the determination of its nature remains one of the greatest challenges of fundamental physics. Assuming the ΛCDM cosmological model, Weakly Interacting Massive Particles would annihilate into Standard Model particles, yielding γ-rays, which could be detected by ground-based telescopes. Dwarf spheroidal galaxies represent promising targets for such indirect searches as they are assumed to be highly dark matter dominated with the absence of astrophysical sources nearby. Previous studies have led to upper limits on the annihilation cross-section assuming single exclusive annihilation channels. In this work, we consider a more realistic situation and take into account the complete annihilation pattern within a given particle physics model. This allows us to study the impact on the derived upper limits on the dark matter annihilation cross-section from a full annihilation pattern compared to the case of a single annihilation channel. We use mock data for the Cherenkov Telescope Array simulating the observations of the promising dwarf spheroidal galaxy Sculptor. We show the impact of considering the full annihilation pattern within a simple framework where the Standard Model of particle physics is extended by a singlet scalar. Such a model shows new features in the shape of the predicted upper limit which reaches a value of 〈σv〉 = 3.8 × 10-24 cm-3s-1 for a dark matter mass of 1 TeV at 95% confidence level. We suggest considering the complete particle physics information in order to derive more realistic limits.

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Search for Dark Matter Annihilation Signals in the H.E.S.S. Inner Galaxy Survey

Cited by 25 publications

References 36 publications

From WIMPs to FIMPs with low reheating temperatures

From WIMPs to FIMPs with low reheating temperatures

Non-standard neutrino spectra from annihilating neutralino dark matter

Dark matter indirect detection limits from complete annihilation patterns

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