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Related papers: A Simple Explanation for DAMA with Moderate Channe…

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A convincing identification of dark matter (DM) particles can probably be achieved only through a combined analysis of different detections strategies, which provides an effective way of removing degeneracies in the parameter space of DM…

High Energy Astrophysical Phenomena · Physics 2014-11-21 Pasquale D. Serpico , Gianfranco Bertone

We consider a minimal Dark Matter model with just two additional states, a Dark Matter Majorana fermion and a colored or electroweakly charged scalar, without introducing any symmetry to stabilize the DM state. We identify the parameter…

High Energy Physics - Phenomenology · Physics 2015-06-16 Giorgio Arcadi , Laura Covi

We show that compatibility between the DAMA modulation result (as well as less statistically significant excesses such as the CDMS Silicon effect and the excess claimed by CRESST) with constraints from other experiments can be achieved by…

Cosmology and Nongalactic Astrophysics · Physics 2015-12-31 Stefano Scopel , Kook-Hyun Yoon , Jong-Hyun Yoon

We address the question of whether the upcoming generation of dark matter search experiments and colliders will be able to discover if the dark matter in the Universe has two components of weakly interacting massive particles (WIMPs). We…

High Energy Physics - Phenomenology · Physics 2009-12-23 Stefano Profumo , Kris Sigurdson , Lorenzo Ubaldi

The detection of the theoretically expected dark matter is central to particle physics and cosmology. Current fashionable supersymmetric models provide a natural dark matter candidate which is the lightest supersymmetric particle (LSP). The…

High Energy Physics - Phenomenology · Physics 2014-11-17 J. D. Vergados

While Dark Matter (DM) is conventionally assumed to be chargeless, the possibility of a charged massive particle (CHAMP) as the DM particle remains alive. With phenomenological constraints on the charge being very severe, such a scenario is…

High Energy Physics - Phenomenology · Physics 2026-02-09 Debajyoti Choudhury , Vineet K. Jha , Suvam Maharana

When CMB data are used to derive cosmological parameters, their very choice does matter: some parameter values can be biased if the parameter space does not cover the "true" model. This is a problem, because of the difficulty to parametrize…

Astrophysics · Physics 2009-06-23 Giuseppe La Vacca , Loris P. L. Colombo , Luca Vergani , Silvio A. Bonometto

We propose a comprehensive theory of dark matter that explains the recent proliferation of unexpected observations in high-energy astrophysics. Cosmic ray spectra from ATIC and PAMELA require a WIMP with mass M_chi ~ 500 - 800 GeV that…

High Energy Physics - Phenomenology · Physics 2009-02-26 Nima Arkani-Hamed , Douglas P. Finkbeiner , Tracy R. Slatyer , Neal Weiner

The dark matter content of the Universe is likely to be a mixture of matter and antimatter, perhaps comparable to the measured asymmetric mixture of baryons and antibaryons. During the early stages of the Universe, the dark matter particles…

Solar and Stellar Astrophysics · Physics 2012-09-18 Ilidio Lopes , Joseph Silk

The CoGeNT collaboration has recently made available new data collected over a period of 15 months. In addition to more accurately measuring the spectrum of nuclear recoil candidate events they have announced evidence for an annual…

High Energy Physics - Phenomenology · Physics 2011-08-25 R. Foot

After decades of experimental efforts, the DAMA/LIBRA(DL) annual modulation (AM) analysis on the $\chi N$ (WIMP Dark Matter interactions on nucleus) channel remains the only one which can be interpreted as positive signatures. This has been…

Dark matter might be in the form of a dark plasma in the Milky Way halo. Specifically, we consider here a hidden sector consisting of a light `dark electron' and a much heavier `dark proton', each charged under an unbroken $U(1)'$ gauge…

High Energy Physics - Phenomenology · Physics 2021-02-03 Lei Zu , R. Foot , Yi-Zhong Fan , Lei Feng

Over the past few decades, a consensus picture has emerged in which roughly a quarter of the universe consists of dark matter. I begin with a review of the observational evidence for the existence of dark matter: rotation curves of…

Cosmology and Nongalactic Astrophysics · Physics 2017-05-31 Katherine Freese

The elastic nuclear recoil signal, being under intense scrutiny by multiple underground experiments, can be interpreted either as coming from the interaction of nuclei with WIMP dark matter or from the scattering of new species of…

High Energy Physics - Phenomenology · Physics 2014-03-26 Maxim Pospelov , Josef Pradler

Weakly Interacting Massive Particles (WIMPs) are one of the leading candidates for Dark Matter. So far the usual procedure for constraining the WIMP-nucleon cross sections in direct Dark Matter detection experiments have been to fit the…

High Energy Physics - Phenomenology · Physics 2011-07-05 Chung-Lin Shan

The annual modulation observed by DAMA/NaI and DAMA/Libra may be interpreted in terms of elastic or inelastic scattering of dark matter particles. In this paper we confront these two scenarios within the framework of a very simple extension…

High Energy Physics - Phenomenology · Physics 2009-11-09 Chiara Arina , Fu-Sin Ling , Michel H. G. Tytgat

In the thermal dark matter (DM) paradigm, primordial interactions between DM and Standard Model particles are responsible for the observed DM relic density. In Boehm et al. (2014), we showed that weak-strength interactions between DM and…

Cosmology and Nongalactic Astrophysics · Physics 2016-05-16 J. A. Schewtschenko , C. M. Baugh , R. J. Wilkinson , C. Boehm , S. Pascoli , T. Sawala

The differential event rate for direct detection of dark matter, both the time averaged and the modulated one due to the motion of the Earth, are discussed. The calculations focus on relatively light cold dark matter candidates (WIMP) and…

High Energy Physics - Phenomenology · Physics 2015-06-03 J. D. Vergados

In the simplest models of asymmetric dark matter (ADM) annihilation signals are not expected, since the DM is non-self-conjugate and the relic density of anti-DM is negligible. We investigate a new class of models in which a symmetric DM…

High Energy Physics - Phenomenology · Physics 2014-09-02 Edward Hardy , Robert Lasenby , James Unwin

Gamma rays and microwave observations of the Galactic Center and surrounding areas indicate the presence of anomalous emission, whose origin remains ambiguous. The possibility of dark matter (DM) annihilation explaining both signals through…

Cosmology and Nongalactic Astrophysics · Physics 2016-04-28 Andrey E. Egorov , Jennifer M. Gaskins , Elena Pierpaoli , Davide Pietrobon
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