18,326 research outputs found
Crystal structure of (5′S,8′S)-3-(2,5-di-methylphenyl)-8-methoxy-3-nitro-1-aza-spiro[4.5]decane-2,4-dione
Peer reviewedPublisher PD
Natural Predictions for the Higgs Boson Mass and Supersymmetric Contributions to Rare Processes
In the context of No-Scale F-SU(5), a model defined by the convergence of the
F-lipped SU(5) Grand Unified Theory, two pairs of hypothetical TeV scale
vector-like supersymmetric multiplets with origins in F-theory, and the
dynamically established boundary conditions of No-Scale Supergravity, we
predict that the lightest CP-even Higgs boson mass lies within the range of
119.0 GeV to 123.5 GeV, exclusive of the vector-like particle contribution to
the mass. With reports by the CMS, ATLAS, CDF, and D0 Collaborations detailing
enticing statistical excesses in the vicinity of 120 GeV in searches for the
Standard Model Higgs boson, all signs point to an imminent discovery. While
basic supersymmetric constructions such as mSUGRA and the CMSSM have already
suffered overwhelming reductions in viable parameterization during the LHC's
initial year of operation, about 80% of the original No-Scale F-SU(5) model
space remains viable after analysis of the first 1.1 fb^{-1} of integrated
luminosity. This model is moreover capable of handily explaining the small
excesses recently reported in the CMS multijet supersymmetry search, and also
features a highly favorable "golden" subspace which may simultaneously account
for the key rare process limits on the muon anomalous magnetic moment (g - 2)
and the branching ratio of the flavor-changing neutral current decay b to
s\gamma. In addition, the isolated mass parameter responsible for the global
particle mass normalization, the gaugino boundary mass M_{1/2}, is dynamically
determined at a secondary local minimization of the minimum of the Higgs
potential V_{min}, in a manner which is deeply consistent with all precision
measurements at the physical electroweak scale.Comment: Physics Letters B Version, 10 pages, 2 figures, 2 table
Three new synonyms of Pohlia (Bryaceae) from China
Three species of Webera and Pohlia described from China were reduced to new synonyms of other species of Pohlia. Webera ciliifera Broth. is a synonym of Pohlia elongata Hedw., W. pygmaea Broth. is a synonym of P. minor Schleich. ex Schwaegr. and P. subflexuosa Broth. is a synonym of P. flexuosa Hook
Finite-time and fixed-time sliding mode control for second-order nonlinear multiagent systems with external disturbances
In this paper, the leader-following consensus of second-order nonlinear multiagent systems (SONMASs) with external disturbances is studied. Firstly, based on terminal sliding model control method, a distributed control protocol is proposed over undirected networks, which can not only suppress the external disturbances, but also make the SONMASs achieve consensus in finite time. Secondly, to make the settling time independent of the initial values of systems, we improve the protocol and ensure that the SONMASs can reach the sliding surface and achieve consensus in fixed time if the control parameters satisfy some conditions. Moreover, for general directed networks, we design a new fixed-time control protocol and prove that both the sliding mode surface and consensus for SONMASs can be reached in fixed time. Finally, several numerical simulations are given to show the effectiveness of the proposed protocols
A stream processing framework based on linked data for information collaborating of regional energy networks
© 2005-2012 IEEE. Coordinating of energy networks to form a city-level multidimensional integrated energy system becomes a new trend in Energy Internet (EI). The collaborating in the information layer is a core issue to achieve smart integration. However, the heterogeneity of multiagent data, the volatility of components, and the real-time analysis requirement in EI bring significant challenges. To solve these problems, in this article we propose a stream processing framework based on linked data for information collaboration among multiple energy networks. The framework provides a universal data representation based on linked data and semantic relation discovery approach to model and semantically fuse heterogeneous data. Semantics-based information transmission contracts and channels are automatically generated to adapt to structural changes in EI. A multimodel-based dynamic adjusting stream processing is implemented using data semantics. A real-world case study is implemented to demonstrate the adaptability, feasibility, and flexibility of the proposed framework
Prospects for Discovery of Supersymmetric No-Scale F-SU(5) at The Once and Future LHC
We present the reach of the Large Hadron Collider (LHC) into the parameter
space of No-Scale F-SU(5), starting our analysis with the current operating
energy of \sqrt{s} = 7 TeV, and extending it on through the bright future of a
14 TeV beam. No-Scale F-SU(5) is a model defined by the confluence of the
F-lipped SU(5) Grand Unified Theory, two pairs of hypothetical TeV scale
vector-like supersymmetric multiplets with origins in F-theory, and the
dynamically established boundary conditions of No-Scale Supergravity. When
searching for a five standard deviation signal, we find that the CMS experiment
at the \sqrt{s} = 7 TeV LHC began to penetrate the phenomenologically viable
parameter space of this model at just under 1/fb of integrated luminosity, and
that the majority of this space remains intact, subsequent to analyses of the
first 1.1/fb of CMS data. On the contrary, the ATLAS experiment had not reached
the F-SU(5) parameter space in its first 1.34/fb of luminosity. Since the CMS
and ATLAS detectors have now each amassed a milestone of 5/fb of collected
luminosity, the current LHC is presently effectively probing No-Scale F-SU(5).
Upon the crossing of the 5/fb threshold, the 7 TeV LHC will have achieved five
standard deviation discoverability for a unified gaugino mass of up to about
532 GeV, a light stop of 577 GeV, a gluino of 728 GeV, and heavy squarks of
just over 1 TeV. Extending the analysis to include a future LHC center-of-mass
beam energy of \sqrt{s} = 14 TeV, the full model space of No-Scale F-SU(5)
should be visible to CMS at about 30/fb of integrated luminosity. We stress
that the F-SU(5) discoverability thresholds discussed here are contingent upon
retaining only those events with nine jets or more for the CMS experiment and
seven jets or more for the ATLAS experiment.Comment: Nuclear Physics B version: Updated to include CMS 1.1/fb and ATLAS
1.34/fb, 8 Pages, 4 Figures, 4 Table
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