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We consider dark matter models in which the mass splitting between the dark matter particles and their annihilation products is tiny. Compared to the previously proposed Forbidden Dark Matter scenario, the mass splittings we consider are…

High Energy Physics - Phenomenology · Physics 2019-07-09 Joachim Kopp , Jia Liu , Tracy R. Slatyer , Xiao-Ping Wang , Wei Xue

One of the key questions in particle physics and astrophysics is the nature of dark matter, which existence has been confirmed in many astrophysical and cosmological observations. Besides direct and indirect detection experiments, collider…

High Energy Physics - Experiment · Physics 2019-09-05 Jeanette Miriam Lorenz

We perform a comprehensive study of the Direct Detection phenomenology of singlet Dark Matter $t$-channel portal models. For that purpose, we present a complete one-loop matching onto a Heavy Dark-Matter Effective Field Theory, leading to a…

High Energy Physics - Phenomenology · Physics 2024-02-05 Giorgio Arcadi , David Cabo-Almeida , Federico Mescia , Javier Virto

We suggest a dark matter scenario which could contribute the possible anomaly observed by Fermi-LAT $\gamma$-ray space telescope. It is based on the model recently proposed by Weinberg. In our scenario the gamma-ray line signal comes from…

High Energy Physics - Phenomenology · Physics 2015-06-17 Seungwon Baek , Hiroshi Okada

We construct models of dark matter with suppressed spin-independent scattering cross section utilizing the existing simplified model framework. Even simple combinations of simplified models can exhibit interference effects that cause the…

High Energy Physics - Phenomenology · Physics 2016-05-30 Arghya Choudhury , Kamila Kowalska , Leszek Roszkowski , Enrico Maria Sessolo , Andrew J. Williams

A simple model of Dark Matter (DM) which couples with the two nucleons with different coupling strengths without violating isospin conservation is explored as an example of the importance of keeping the experimental data analysis as model…

Cosmology and Nongalactic Astrophysics · Physics 2011-10-21 F. Giuliani

We perform a global fit to data from Dark Matter (DM) direct detection experiments, including the recent CDMS-II results. We discuss possible interpretations of the DAMA annual modulation signal in terms of spin-independent and…

High Energy Physics - Phenomenology · Physics 2010-05-28 Joachim Kopp , Thomas Schwetz , Jure Zupan

Direct detection experiments and the interpretation of their results are sensitive to the velocity structure of the dark matter in our galactic halo. In this work, we extend the formalism that deals with such astrophysics-driven…

High Energy Physics - Phenomenology · Physics 2024-04-09 Elias Bernreuther , Patrick J. Fox , Benjamin Lillard , Anna-Maria Taki , Tien-Tien Yu

The evidence for the dark matter of the hot big bang cosmology is about as good as it gets in natural science. The exploration of its nature is now led by direct and indirect detection experiments, to be complemented by advances in the full…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-15 P. J. E. Peebles

Besides Standard Model measurements and other Beyond Standard Model studies, the ATLAS and CMS experiments at the LHC will search for Supersymmetry, one of the most attractive explanation for dark matter. The SUSY discovery potential with…

High Energy Physics - Phenomenology · Physics 2012-01-06 Vasiliki A. Mitsou

The nature of dark matter is a longstanding enigma of physics; it may consist of particles beyond the Standard Model that are still elusive to experiments. Among indirect search techniques, which look for stable products from the…

Dark Matter can form bound states upon the emission of quanta of energy equal to the binding energy. The rate of this process is large for strongly-interacting Dark Matter, and further enhanced by long distance effects. The resulting…

High Energy Physics - Phenomenology · Physics 2020-07-15 Rakhi Mahbubani , Michele Redi , Andrea Tesi

A bevy of light dark matter direct detection experiments have been proposed, targeting spin-independent dark matter scattering. In order to be exhaustive, non-standard signatures that have been investigated in the WIMP window including…

High Energy Physics - Phenomenology · Physics 2019-05-14 Harikrishnan Ramani , Graham Woolley

Conventional approaches to describe dark matter phenomenology at collider and (in)direct detection experiments in the form of dark matter effective field theory or simplified models suffer in general from drawbacks regarding validity at…

High Energy Physics - Phenomenology · Physics 2018-03-23 Tommi Alanne , Florian Goertz

Dark matter (DM) constitutes around a 25% of the Universe, while baryons only a 4%. DM can be reasonably assumed to be made of particles, and many theories (Super-symmetry, Universal Extra Dimensions, etc.) predict Weakly Interacting…

High Energy Astrophysical Phenomena · Physics 2022-03-02 A. Morselli , B. Canadas , V. Vitale

Many experiments that aim at the direct detection of Dark Matter are able to distinguish a dominant background from the expected feeble signals, based on some measured discrimination parameter. We develop a statistical model for such…

Joint analyses of small-scale cosmological structure probes are relatively unexplored and promise to advance measurements of microphysical dark matter properties using heterogeneous data. Here, we present a multidimensional analysis of dark…

Cosmology and Nongalactic Astrophysics · Physics 2021-08-10 Ethan O. Nadler , Simon Birrer , Daniel Gilman , Risa H. Wechsler , Xiaolong Du , Andrew Benson , Anna M. Nierenberg , Tommaso Treu

In the first part of this note, we observe that a non-Riemannian piece in the affine connection (a "dark connection") leads to an algebraically determined, conserved, symmetric 2-tensor in the Einstein field equations that is a natural dark…

Cosmology and Nongalactic Astrophysics · Physics 2018-09-24 Ranit Das , Chethan Krishnan

An interesting class of models posits that the dark matter is a Majorana fermion which interacts with a quark together with a colored scalar mediator. Such a theory can be tested in direct detection experiments, through dark matter…

High Energy Physics - Phenomenology · Physics 2022-03-21 Kirtimaan A. Mohan , Dipan Sengupta , Tim M. P Tait , Bin Yan , C. -P. Yuan

The cold dark matter (CDM) paradigm provides a remarkably good description of the Universe's large-scale structure. However, some discrepancies exist between its predictions and observations at very small sub-galactic scales. To address…

Cosmology and Nongalactic Astrophysics · Physics 2024-01-04 Atrideb Chatterjee , Sourav Mitra , Amrita Banerjee