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The SIMPLE Collaboration has reported results from their superheated C2ClF5 droplet detectors, including a description of acoustic discrimination between \alpha decays and nuclear recoils. Our concern is that the events in the neutron…

宇宙学与河外天体物理 · 物理学 2012-06-29 C. E. Dahl , J. Hall , W. H. Lippincott

We report an improved SIMPLE experiment comprising four superheated droplet detectors with a total exposure of 0.42 kgd. The result yields ~ factor 10 improvement in the previously-reported results, and -- despite the low exposure -- is…

The SIMPLE project uses superheated C2ClF5 liquid detectors to search for particle dark matter candidates. We report the results of the first stage exposure (14.1 kgd) of its latest two-stage, Phase II run, with 15 superheated droplet…

宇宙学与河外天体物理 · 物理学 2011-01-11 TA Girard , T. A. Morlat , M. Felizardo , A. C. Fernandes , A. R. Ramos , J. G. Marques

We report the final results of the Phase II SIMPLE measurements, comprising two run stages of 15 superheated droplet detectors each, the second stage including an improved neutron shielding. The analyses includes a refined signal analysis,…

As experimental sensitivity increases, one is approaching the range of WIMP-nucleon interaction strengths characteristic of neutralinos. But this continuing progress also unearths new experimental challenges and uncertainties.

高能物理 - 唯象学 · 物理学 2007-05-23 Leszek Roszkowski

I describe the new instrumentation for the SIMPLE dark matter search experiment, and its use in identifying, validating and rejecting non-WIMP backgrounds in the first stage of the Phase II project measurements. Beyond intrinsic acoustic…

天体物理仪器与方法 · 物理学 2011-01-11 M. Felizardo

The current state searches for dark matter in the form of Weakly Interacting Massive Particles (WIMPs) using both direct and indirect techniques is reviewed. Advances in recent years by various direct search experiments, utilising…

天体物理学 · 物理学 2007-05-23 N. J. C. Spooner , V. A. Kudryavtsev

At present, restrictions on the spin-independent parameter space of WIMP dark matter searches have been limited to the results provided by relatively heavy nuclei experiments, based on the conventional wisdom that only such experiments can…

天体物理学 · 物理学 2007-05-23 F. Giuliani , TA Girard , T. Morlat

SIMPLE is an experimental search for evidence of spin-dependent dark matter, based on superheated droplet detectors using C$_{2}$ClF$_{5}$. We report preliminary results of a 0.6 kgdy exposure of five one liter devices, each containing…

高能物理 - 实验 · 物理学 2016-11-03 TA Girard , F. Giuliani , J. I. Collar

Phase II of SIMPLE (Superheated Instrument for Massive ParticLe Experiments) searched for astroparticle dark matter using superheated liquid C$_{2}$ClF$_{5}$ droplet detectors. Each droplet generally requires an energy deposition with…

The SIMPLE experiment is reanalyzed within the context of the WIMP model independent framework of Tovey et. al.. The results are compared with those of the UK NAIAD and NaF experiments as recently reported by the Tokyo group, together with…

天体物理学 · 物理学 2008-11-26 F. Giuliani , TA Girard

In a previous comment (arXiv:0806.1341v1) we criticized purely technical aspects of arXiv:0712.1645 but pointed out that many other inconsistencies were readily apparent. In view of the imminent posting of another version of…

高能物理 - 实验 · 物理学 2008-08-10 F. T. Avignone , P. S. Barbeau , J. I. Collar

SIMPLE (Superheated Instrument for Massive ParticLE searches) employs superheated droplet detectors (SDDs) to search for Weakly Interacting Massive Particle (WIMP) dark matter. As a result of the intrinsic SDD insensitivity to minimum…

天体物理学 · 物理学 2016-11-03 J. I. Collar , T. A. Girard , D. Limagne , H. S. Miley , T. Morlat , J. Puibasset , G. Waysand

Weakly Interacting Massive Particles (WIMPs) continue to be considered some of the best-motivated Dark Matter (DM) candidates. No conclusive signal, despite an extensive search program that combines, often in a complementary way, direct,…

The complementarity of direct, indirect and collider searches for dark matter has improved our understanding concerning the properties of the dark matter particle. In this short review, we present a step toward the fundamental nature of…

高能物理 - 唯象学 · 物理学 2017-11-08 Farinaldo S. Queiroz

This article gives an overview on the status of experimental searches for dark matter at the end of 2014. The main focus is on direct searches for weakly interacting massive particles (WIMPs) using underground-based low-background…

宇宙学与河外天体物理 · 物理学 2015-07-29 Marc Schumann

Serious searches for the weakly interacting massive particle (WIMP) have now begun. In this context, the most important questions that need to be addressed are: "To what extent can we constrain the WIMP models in the future?" and "What will…

高能物理 - 唯象学 · 物理学 2016-11-22 Shankha Banerjee , Shigeki Matsumoto , Kyohei Mukaida , Yue-Lin Sming Tsai

Using improved Ge and Si detectors, better neutron shielding, and increased counting time, the Cryogenic Dark Matter Search (CDMS) experiment has obtained stricter limits on the cross section of weakly interacting massive particles (WIMPs)…

高能物理 - 实验 · 物理学 2012-08-27 CDMS Collaboration

In this work we combine information from relic abundance, direct detection, cosmic microwave background, positron fraction, gamma rays, and colliders to explore the existing constraints on couplings between Dark Matter and Standard Model…

高能物理 - 唯象学 · 物理学 2016-04-20 Mattias Blennow , Pilar Coloma , Enrique Fernandez-Martinez , Pedro A. N. Machado , Bryan Zaldivar
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