10,648 research outputs found
Higgs as an indication for flavor symmetry
Lepton flavor violating Higgs decays can arise in flavor symmetry models
where the Higgs sector is responsible for both the electroweak and the flavor
symmetry breaking. Here we advocate an three-Higgs-doublet model where
tightly constrained flavor changing neutral currents are suppressed by a
remnant symmetry. A small breaking of this symmetry can explain the
excess of Higgs decay final states with a topology
reported recently by CMS if the new neutral scalars are light. The model also
predicts sizable rates for lepton flavor violating Higgs decays in the
and channels because of the unifying flavor symmetry.Comment: 15+9 pages, 7 figures, updated for publication in PR
Satellite observations of mesoscale features in lower Cook Inlet and Shelikof Strait, Gulf of Alaska
The Seasat satellite launched in Summer 1978 carried a synthetic aperture radar (SAR). Although Seasat failed after 105 days in orbit, it provided observations that demonstrate the potential to examine and monitor upper oceanic processes. Seasat made five passes over lower Cook Inlet and Shelikof Strait, Alaska, during Summer 1978. SAR images from the passes show oceanographic features, including a meander in a front, a pair of mesoscale eddies, and internal waves. These features are compared with contemporary and representative images from a satellite-borne Advanced Very High Resolution Radiometer (AVHRR) and Coastal Zone Color Scanner (CZCS), with water property data, and with current observations from moored instruments. The results indicate that SAR data can be used to monitor mesoscale oceanographic features
Introduction: Locating Asia's War Memory Boom: national, regional and global perspectives
This introductory chapter locates recent shifts in war memory across the Asia region within the wider historical literature that seeks to explain the phenomenon of “memory booms”. While recognizing those global changes which have influenced the timing and shape of war remembrance across Asia as well as Europe, the authors take aim at a Western diffusionist model of the history of war memory. They argue that approaches informed by European experience need to better take account of historical difference and be, in effect, provincialized. They also contend that the ruptures in Asian war memory directly occasioned by the end of the Cold War have been overplayed. Rather, the major recent rupture in war remembrance has been the increasingly interconnected nature of war memory-making in the region, across national boundaries and involving growing numbers of non-state actors. This has influenced a shift from portraying the wars of 1931–45 as a series of local national wars, each with its own political significance and temporality, towards presenting them as a common pan-Asian experience
Circular No. 48, 1903. Oregon Short Line Railroad.
Circular concerning the annual meeting of the National Educational Association
Dissipation-scale fluctuations in the inner region of turbulent channel flow
The statistics of intense energy dissipation events in wall-bounded shear flows are studied using highly resolved direct numerical simulations of turbulent channel flow at three different friction Reynolds numbers. Distributions of the energy dissipation rate and local dissipation scales are computed at various distances from the channel walls, with an emphasis on the behavior of the statistics in the near-wall region. The dependence of characteristic mean and local dissipation scales on wall distance is also examined over the full channel height. Systematic variations in these statistics are found close to the walls due to the anisotropy generated by mean shear and coherent vortical structures. Results near the channel centerline are consistent with those found in homogeneous isotropic turbulence
Observation of the Higgs Boson of strong interaction via Compton scattering by the nucleon
It is shown that the Quark-Level Linear Model (QLLM) leads
to a prediction for the diamagnetic term of the polarizabilities of the nucleon
which is in excellent agreement with the experimental data. The bare mass of
the meson is predicted to be MeV and the two-photon
width keV. It is argued that the
mass predicted by the QLLM corresponds to the reaction, i.e. to a -channel pole of the reaction.
Large -angle Compton scattering experiments revealing effects of the
meson in the differential cross section are discussed. Arguments are presented
that these findings may be understood as an observation of the Higgs boson of
strong interaction while being part of the constituent quark.Comment: 17 pages, 6 figure
Time-convolutionless reduced-density-operator theory of a noisy quantum channel: a two-bit quantum gate for quantum information processing
An exact reduced-density-operator for the output quantum states in
time-convolutionless form was derived by solving the quantum Liouville equation
which governs the dynamics of a noisy quantum channel by using a projection
operator method and both advanced and retarded propagators in time. The
formalism developed in this work is general enough to model a noisy quantum
channel provided specific forms of the Hamiltonians for the system, reservoir,
and the mutual interaction between the system and the reservoir are given.
Then, we apply the formulation to model a two-bit quantum gate composed of
coupled spin systems in which the Heisenberg coupling is controlled by the
tunneling barrier between neighboring quantum dots. Gate Characteristics
including the entropy, fidelity, and purity are calculated numerically for both
mixed and entangled initial states
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