9,215 research outputs found

    Lessons for SUSY from the LHC after the first run

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    A review of direct searches for new particles predicted by Supersymmetry after the first run of the LHC is proposed. This review is based on the results provided by the ATLAS and CMS experiments.Comment: 31 pages, 41 figures, Appear in the special issue of the EPJ C journal entitled "SUSY after the Higgs discovery

    Vertical pairing of identical particles suspended in the plasma sheath

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    It is shown experimentally that vertical pairing of two identical microspheres suspended in the sheath of a radio-frequency (rf) discharge at low gas pressures (a few Pa), appears at a well defined instability threshold of the rf power. The transition is reversible, but with significant hysteresis on the second stage. A simple model, which uses measured microsphere resonance frequencies and takes into account besides Coulomb interaction between negatively charged microspheres also their interaction with positive ion wake charges, seems to explain the instability threshold quite well.Comment: 4 pages, 6 figures. to appear in Phys. Rev. Lett. 86, May 14th (2001

    Existence and Vanishing of the Breathing Mode in Strongly Correlated Finite Systems

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    One of the fundamental eigenmodes of finite interacting systems is the mode of {\em uniform radial expansion and contraction} -- the ``breathing'' mode (BM). Here we show in a general way that this mode exists only under special conditions: i) for harmonically trapped systems with interaction potentials of the form 1/rγ1/r^\gamma (γR0)(\gamma\in\mathbb{R}_{\neq0}) or log(r)\log(r), or ii) for some systems with special symmetry such as single shell systems forming platonic bodies. Deviations from the BM are demonstrated for two examples: clusters interacting with a Lennard-Jones potential and parabolically trapped systems with Yukawa repulsion. We also show that vanishing of the BM leads to the occurence of multiple monopole oscillations which is of importance for experiments

    Performance evaluation of wheels for lunar vehicles

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    Performance evaluation of wheels for lunar vehicle

    The Many Faces of a Character

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    We prove an identity between three infinite families of polynomials which are defined in terms of `bosonic', `fermionic', and `one-dimensional configuration' sums. In the limit where the polynomials become infinite series, they give different-looking expressions for the characters of the two integrable representations of the affine su(2)su(2) algebra at level one. We conjecture yet another fermionic sum representation for the polynomials which is constructed directly from the Bethe-Ansatz solution of the Heisenberg spin chain.Comment: 14/9 pages in harvmac, Tel-Aviv preprint TAUP 2125-9

    Non-Simplified SUSY: Stau-Coannihilation at LHC and ILC

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    If new phenomena beyond the Standard Model will be discovered at the LHC, the properties of the new particles could be determined with data from the High-Luminosity LHC and from a future linear collider like the ILC. We discuss the possible interplay between measurements at the two accelerators in a concrete example, namely a full SUSY model which features a small stau_1-LSP mass difference. Various channels have been studied using the Snowmass 2013 combined LHC detector implementation in the Delphes simulation package, as well as simulations of the ILD detector concept from the Technical Design Report. We investigate both the LHC and ILC capabilities for discovery, separation and identification of various parts of the spectrum. While some parts would be discovered at the LHC, there is substantial room for further discoveries at the ILC. We finally highlight examples where the precise knowledge about the lower part of the mass spectrum which could be acquired at the ILC would enable a more in-depth analysis of the LHC data with respect to the heavier states.Comment: 42 pages, 18 figures, 12 table

    Interaction between dust grains near a conducting wall

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    The effect of the conducting electrode on the interaction of dust grains in a an ion flow is discussed. It is shown that two grains levitating above the electrode at the same height may attract one another. This results in the instability of a dust layer in a plasma sheath.Comment: 9 pages. 3 figures. Submitted to Plasma Physics Report

    Economic inequalities in burden of illness, diagnosis and treatment of five long-term conditions in England: panel study

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    We compared the distribution by wealth of self-reported illness burden (estimated from validated scales, biomarker and reported symptoms) for angina, cataract, depression, diabetes and osteoarthritis, with the distribution of self-reported medical diagnosis and treatment. We aimed to determine if the greater illness burden borne by poorer participants was matched by appropriately higher levels of diagnosis and treatment

    Self-consistent model of unipolar transport in organic semiconductor diodes: accounting for a realistic density-of-states distribution

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    A self-consistent, mean-field model of charge-carrier injection and unipolar transport in an organic semiconductor diode is developed utilizing the effective transport energy concept and taking into account a realistic density-of-states distribution as well as the presence of trap states in an organic material. The consequences resulting from the model are discussed exemplarily on the basis of an indium tin oxide/organic semiconductor/metallic conductor structure. A comparison of the theory to experimental data of a unipolar indium tin oxide/poly-3-hexyl-thiophene/Al device is presented.Comment: 6 pages, 2 figures; to be published in Journal of Applied Physic

    3D-printing based Transducer Holder for Robotic Assisted Ultrasound Guided HIFU

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    The InnoMotion (Synthes Inc., previously by Innomedic GmbH) is a Conformité Européene (CE) marked (in 2005) robotic system for image-guided percutaneous interventions, providing five pneumatically driven degrees of freedom (DoF) and two manually adjusted DoF. It is a fully MR and CT compatible pneumatic driven tele-manipulator for image guided insertion of cannula and probes for biopsy, drainage, drug delivery, and energetic tumor destruction. In order to achieve the robotic assisted ultrasound guided HIFU therapy, a specific holder was designed for the INNOMOTION robotic arm by using SolidWorks (Dassault Systèmes, Vélizy-Villacoublay, France). The holder provides at least seven degrees of freedom (DoF), which let the InnoMotion robotic arm hold a HIFU transducer and an ultrasound imaging probe at the same time. The HIFU transducer is mounted to the holder, while the ultrasound (US) probe could be adjusted manually to cover the expected ablation area before therapy. The main components of the holder were 3D-printed by using plastic material and were well compatible with the MR system and InnoMotion robotic arm. And the robotic assisted HIFU experiment could be performed based on this designed setup
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