9,911 research outputs found
Two Higgs bosons near 125 GeV in the complex NMSSM and the LHC Run-I data
We analyse the impact of explicit CP-violation in the Higgs sector of the
Next-to-Minimal Supersymmetric Standard Model (NMSSM) on its consistency with
the Higgs boson data from the Large Hadron Collider (LHC). Through detailed
scans of the parameter space of the complex NMSSM for certain fixed values of
one of its CP-violating (CPV) phases, we obtain a large number of points
corresponding to five phenomenologically relevant scenarios containing GeV Higgs boson(s). We focus, in particular, on the scenarios where the
visible peaks in the experimental samples can actually be explained by two
nearly mass-degenerate neutral Higgs boson states. We find that some points
corresponding to these scenarios give an overall slightly improved fit to the
data, more so for non-zero values of the CPV phase, compared to the scenarios
containing a single Higgs boson near 125 GeV.Comment: 22 pages, 3 figures. Substantially revised text, improved results and
figures, overall conclusions unchanged. Some added references. Version to
appear in the special issue "Supersymmetry beyond the (N)MSSM" of AHE
Performance-oriented Cloud Provisioning: Taxonomy and Survey
Cloud computing is being viewed as the technology of today and the future.
Through this paradigm, the customers gain access to shared computing resources
located in remote data centers that are hosted by cloud providers (CP). This
technology allows for provisioning of various resources such as virtual
machines (VM), physical machines, processors, memory, network, storage and
software as per the needs of customers. Application providers (AP), who are
customers of the CP, deploy applications on the cloud infrastructure and then
these applications are used by the end-users. To meet the fluctuating
application workload demands, dynamic provisioning is essential and this
article provides a detailed literature survey of dynamic provisioning within
cloud systems with focus on application performance. The well-known types of
provisioning and the associated problems are clearly and pictorially explained
and the provisioning terminology is clarified. A very detailed and general
cloud provisioning classification is presented, which views provisioning from
different perspectives, aiding in understanding the process inside-out. Cloud
dynamic provisioning is explained by considering resources, stakeholders,
techniques, technologies, algorithms, problems, goals and more.Comment: 14 pages, 3 figures, 3 table
Where to find facial artery perforators: a reference point
Reconstructive surgery of the midface using facial artery perforator (FAP) flaps is being used more frequently now as it has been reported to provide better aesthetic results and reduce a traditional two-stage procedure to a one-stage technique. Wide acceptance of this approach is limited by poor understanding of the anatomy associated with this technique however. This was investigated through a cadaveric study. The facial artery (FA) of 16 cadaveric half faces were each identified, cannulated with coloured latex, and then dissected to give an accurate and quantified description of FA perforating branches. A lateral view picture of each specimen was taken and analysed using ImageJ 1.42q. Cadaveric dissections showed that each hemiface could be regarded as a single entity. Means: FA length = 116±22 mm, FA diameter = 2.62±0.74mm, number of FAPs = 4±2, FAP length = 14.12±3.46 mm, FAP diameter = 0.94±0.29 mm. A reference point, A, where FAPs were consistently found to originate was also identified. Therefore, the FAP flap is a viable and valuable addition to plastic reconstructive techniques. The localisation of point A with precise measurements can facilitate the design and use of such FAP flaps for the reconstruction of nasal, as well as perinasal and perioral defects
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