20-24 May 2013
Bonn
Europe/Berlin timezone
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Parallel Session on Dark Matter

Place

Location: Bonn
Address: Physikalisches Institut Nussallee 12 53115 Bonn
Room: Small Lecture Hall Mathematics
Date: 22 May 14:00 - 5:40 PM

Conveners

    • Mr. Huber, Stephan
    • Mr. Huber, Stephan

Timetable | Contribution List

Displaying 8 contributions out of 8
High-energy photons from dark matter annihilation in dark matter halos and subhalos may contribute to the diffuse gamma-ray background. We study here the features of the angular power spectrum of the signal expected from dark matter annihilation in galactic halos and subhalos. We evaluate the anisotropy signal obtained from various galactic-sized cosmological simulations and discuss the relevant p ... More
Presented by Valentina DE ROMERI on 22/5/2013 at 15:20
Decaying dark matter is an interesting and viable alternative to the common paradigm of stable dark matter. Our purpose is to investigate whether the LHC can probe scenarios of decaying DM. Although the limits on the DM lifetime forbid the direct collider observation of its decays, the couplings responsible for these processes can determine, thanks to crossing symmetries, DM production cross secti ... More
Presented by Giorgio ARCADI on 22/5/2013 at 12:30
Co-annihilation can be dominant in many scenarios. We adopt an effective operator approach to the dark matter physics where co-annihilation is dominant in giving the right amount of relic abundance. The related collider constraints on these effective operators are also studied.
Presented by Yi CAI on 22/5/2013 at 15:00
We show that there exists only a quite limited number of higher dimensional operators which can naturally lead to a slow decay of dark matter particles into monochromatic photons. As each of these operators inevitably induces decays into particles other than photons, we show that the g-lines it induces are always accompanied by a continuum flux of cosmic rays. Hence constraints on cosmic-ray fluxe ... More
Presented by Tiziana SCARNA on 22/5/2013 at 14:00
Over the last years direct dark matter detection, collider searches and gamma ray observations have made tremendous progress towards probing dark matter. In particular searches for gamma ray lines have attracted a lot of attention during the last year. A well known alternative to gamma lines is provided by the hard spectrum of Internal Bremsstrahlung. We investigate the importance of direct detect ... More
Presented by Stefan VOGL on 22/5/2013 at 14:20
We show evidence for the existence of internal bremsstrahlung signatures in the Inert Doublet Model (IDM). In particular, we show they naturally arise in the high dark matter mass regime due to the near-degeneracy of the extra scalar masses. We calculate the corresponding annihilation cross-sections and compare them against constraints coming from direct and indirect dark matter searches. Finally ... More
Presented by Camilo A GARCIA CELY on 22/5/2013 at 14:40
An analysis of the Fermi gamma ray space telescope data has recently revealed a resolved gamma-ray feature close to the galactic center which is consistent with monochromatic photons at an energy of about 130 GeV. If interpreted in terms of dark matter (DM) annihilating into \gamma \gamma, this would correspond to a DM particle mass of roughly 130 GeV. The rate for these loop-suppressed processes, ... More
Presented by Masaki ASANO on 22/5/2013 at 13:00
In this talk, an introduction to keV sterile neutrinos as Dark Matter particles is given. After reviewing the cosmological aspects of (Warm) Dark Matter, I will explain why the topic is interesting for particle physics model building and also point out the differences to ordinary neutrino model building. We will go through a couple of generic models, all of which yield interesting and fundamental ... More
Presented by Alexander MERLE on 22/5/2013 at 12:00
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