17,550 research outputs found
The Quark Flavor Violating Higgs Decay in the MSSM
We study the quark flavor violating Higgs-boson decay in the Minimal Supersymmetric Standard Model (MSSM). The decay is
analyzed first in a model independent, and in a second step in the minimal
flavor violationg (MFV) Constrained MSSM. The experimental constraints from
-Physics observables (BPO) and electroweak precision observables (EWPO) are
also calculated and imposed on the parameter space. It is shown that in some
cases the EWPO restrict the flavor violating parameter space stronger than the
BPO. In the model independent analysis values of can be
found for . In the MFV CMSSM such
results can only be obtained in very restricted parts of the parameter space.
The results show that it is not excluded to observe the decay in the MSSM at future colliders.Comment: arXiv admin note: text overlap with arXiv:1501.02258; text overlap
with arXiv:hep-ph/9909325 by other author
Cauchy-characteristic Evolution of Einstein-Klein-Gordon Systems: The Black Hole Regime
The Cauchy+characteristic matching (CCM) problem for the scalar wave equation
is investigated in the background geometry of a Schwarzschild black hole.
Previously reported work developed the CCM framework for the coupled
Einstein-Klein-Gordon system of equations, assuming a regular center of
symmetry. Here, the time evolution after the formation of a black hole is
pursued, using a CCM formulation of the governing equations perturbed around
the Schwarzschild background. An extension of the matching scheme allows for
arbitrary matching boundary motion across the coordinate grid. As a proof of
concept, the late time behavior of the dynamics of the scalar field is
explored. The power-law tails in both the time-like and null infinity limits
are verified.Comment: To appear in Phys. Rev. D, 9 pages, revtex, 5 figures available at
http://www.astro.psu.edu/users/nr/preprints.htm
Higgs masses and Electroweak Precision Observables in the Lepton-Flavor-Violating MSSM
We study the effects of Lepton Flavor Violation (LFV) in the scalar lepton
sector of the MSSM on precision observables such as the W-boson mass and the
effective weak leptonic mixing angle, and on the Higgs-boson mass predictions.
The slepton mass matrices are parameterized in a model-independent way by a
complete set of dimensionless parameters which we constrain through LFV decay
processes and the precision observables. We find regions where both conditions
are similarly constraining. The necessary prerequisites for the calculation
have been added to FeynArts and FormCalc and are thus publicly available for
further studies. The obtained results are available in FeynHiggs.Comment: LaTeX, 30 page
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