Planck 2013&nbsp;<br /> <h2>From the Planck Scale to the Electroweak Scale</h2>

Session

Parallel Session on Dark Matter

22 May 2013, 14:00

Bonn

Conveners

Parallel Session on Dark Matter

• Stephan Huber

Parallel Session on Dark Matter

• Stephan Huber

90. keV Neutrino Dark Matter

Alexander Merle

22/05/2013, 14:00

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...

91. Correlations between Indirect Detection and Collider Signals in Decaying Dark Matter Scenarios

Giorgio Arcadi

22/05/2013, 14:30

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...

92. The 130 GeV gamma-ray line and generic dark matter model building constraints from continuum gamma rays, radio and antiproton data

Masaki Asano

22/05/2013, 15:00

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...

93. Effective Theory of Dark Matter Decay into Monochromatic Photons and its Implications: Constraints from Associated Cosmic-Ray Emission

Tiziana Scarna

22/05/2013, 16:00

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...

94. Internal Bremsstrahlung Signatures from Dark Matter Annihilations in Light of Direct Detection and Collider Searches

Stefan Vogl

22/05/2013, 16:20

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...

95. Study of internal bremsstrahlung in the inert doublet model

Camilo A Garcia Cely

22/05/2013, 16:40

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....

96. Dark Matter and Co-annihilation

Yi Cai

22/05/2013, 17:00

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.

97. Anisotropies in the gamma-ray sky from galactic dark matter annihilation

Valentina De Romeri

22/05/2013, 17:20

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...