نتایج جستجو برای: wimp
تعداد نتایج: 1118 فیلتر نتایج به سال:
Weakly interacting massive particles (WIMPs) are a viable candidate for the relic abundance of dark matter (DM) produced in the early universe. So far WIMPs have eluded direct detection through interactions with baryonic matter. Neutrino emission from accumulated WIMP annihilations in the solar core has been proposed as a signature of DM, but has not yet been detected. These null results may be...
The EDELWEISS collaboration is searching for WIMP dark matter using natural Ge cryogenic detectors. The whole data set of the first phase of the experiment contains 4.8 kg.day of data on Ge, the naturally present (7.8%), high-spin Ge isotope. The sensitivity of the experiment to the spin-dependent WIMP-nucleon interactions is evaluated using the model-independent framework proposed by Tovey et ...
Directional dark matter detectors will be able to record the recoil momentum spectrum of nuclei hit by dark matter WIMPs. We show that the recoil momentum spectrum is the Radon transform of the WIMP velocity distribution. This allows us to obtain analytic expressions for the recoil spectra of a variety of velocity distributions. We comment on the possibility of inverting the recoil momentum spe...
An annual modulation in the event rate of the NaI detector of the Dama collaboration has been used to infer the existence of particle dark matter in the Galactic halo. Bounds on the WIMP mass and WIMP-nucleon cross section have been derived. These analyses have assumed that the local dark-matter velocity distribution is either isotropic or has some bulk rotation. Here we consider the effects of...
The XENON10 experiment at the Gran Sasso National Laboratory uses a 15 kg xenon dual phase time projection chamber to search for dark matter weakly interacting massive particles (WIMPs). The detector measures simultaneously the scintillation and the ionization produced by radiation in pure liquid xenon to discriminate signal from background down to 4.5 keV nuclear-recoil energy. A blind analysi...
This paper describes an attempt to enhance a windows based (WIMP Windows Icon Menu Pointer) environment. The goal is to establish whether user interaction on the common desktop PC can be augmented by adding new modalities to the WIMP interface, thus bridging the gap between todays interaction patterns and future interfaces comprising e.g. advanced conversational capabilities, VR technology, etc...
We have performed a search for muon neutrinos from dark matter annihilation in the center of the Sun with the 79-string configuration of the IceCube neutrino telescope. For the first time, the DeepCore subarray is included in the analysis, lowering the energy threshold and extending the search to the austral summer. The 317 days of data collected between June 2010 and May 2011 are consistent wi...
With the introduction of new modes to control user interfaces like speech, gesture and multi-touch Post-WIMP interfaces increasingly substitute classical WIMP (windows, icons, menus, pointer) user interfaces. In this paper, we describe a toolchain of three connected tools to design and monitor custom Post-WIMP interactors using modelbased user interface design (MBUID) methods. We use state char...
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