AMS-02 antiprotons, at last! Secondary astrophysical component and immediate implications for Dark Matter

By G. Giesen, M. Boudaud, Y. Génolini, V. Poulin, Marco Cirelli, P. Salati, P. Serpico. 2015

221 citations recorded by the source corpus.

Using the updated proton and helium fluxes just released by the AMS-02 experiment we reevaluate the secondary astrophysical antiproton to proton ratio and its uncertainties, and compare it with the ratio preliminarly reported by AMS-02. We find no unambiguous evidence for a significant excess with respect to expectations. Yet, some preference for a flatter energy dependence of the diffusion coefficient (with respect to the MED benchmark often used in the literature) starts to emerge. Also, we provide a first assessment of the room left for exotic components such as Galactic Dark Matter annihilation or decay, deriving new stringent constraints.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/e4f55a6362cbb64aa21b7ce87e02ff63dbe158c9

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. Alex Drlica-Wagner
2. Marco Cirelli
3. F. Sala

In Nuclear and High Energy Physics

1. J. Gaskins
2. P. Panci
3. M. Meyer
4. U. Firenze
5. E. Amato
6. Gran Sasso Science Institute
7. P. S. A. A. D. Arcetri
8. M. Taoso

Citations in the corpus

• Sensitivity projections for dark matter searches with the Fermi large area telescope (2016, background): “[286]; additional details about the uncertainty bands may be found in that work; reproduced under the Creative Commons attribution license.”
• Cosmic ray transport in the Galaxy: A review (2017, result): “In fact, even some current studies (Evoli et al., 2015; Giesen et al., 2015) reached the same conclusion by just taking into account the uncertainties in the cross section for p̄ production and those associated to CR transport.”
• Dark Matter's secret liaisons: phenomenology of a dark U(1) sector with bound states (2016, methodology): “. The data can be reasonably well t with secondaries assuming a Max galactic propagation scheme and adapting the normalization and the impact of solar modulation within the uncertainties (we refer to [151] for any further detail). For the DM contribution, we choose for deniteness an Einasto prole fo”
• WIMP dark matter candidates and searches—current status and future prospects (2017, result): “Recently an excess in antiproton flux has been confirmed in the AMS-02 data [396] (see, however, [397]).”