12,690 research outputs found
Re-evaluation of neutrino mixing pattern according to latest T2K result
We re-evaluate neutrino mixing patterns according to the latest T2K result
for a larger mixing angle , and find that the PMNS mixing matrix
has larger deviations from bimaximal (BM) and tribimaximal (TB) mixing patterns
than previously expected. We also find that several schemes connecting PMNS and
CKM mixing matrices can accommodate the latest T2K result nicely. As necessary
updates to former works, we make new triminimal expansions of PMNS mixing
matrix based on BM and TB mixing patterns. We also propose a new mixing pattern
with a self-complementary relation between the mixing angles , and find such a new mixing pattern in
leading order can provide a rather good description of the data.Comment: 9 latex pages, no figure, final version for journal publicatio
Production of doubly heavy baryons via Higgs boson decays
We systematically analyzed the production of semi-inclusive doubly heavy
baryons (, and ) for the process through four main Higgs decay
channels within the framework of non-relativistic QCD. The contributions from
the intermediate diquark states, ,
, , , and , have been taken into consideration.
The differential distributions and three main sources of the theoretical
uncertainties have been discussed. At the High Luminosity Large Hadron
Collider, there will be about 0.43 events of ,
6.32 events of and 0.28 events of
produced per year. There are fewer events produced at the Circular Electron
Positron Collider and the International Linear Collider, about events of , events of and
events of in operation.Comment: 15 pages, 3 figures, 7 table
Hyperbolic character of the angular moment equations of radiative transfer and numerical methods
We study the mathematical character of the angular moment equations of
radiative transfer in spherical symmetry and conclude that the system is
hyperbolic for general forms of the closure relation found in the literature.
Hyperbolicity and causality preservation lead to mathematical conditions
allowing to establish a useful characterization of the closure relations. We
apply numerical methods specifically designed to solve hyperbolic systems of
conservation laws (the so-called Godunov-type methods), to calculate numerical
solutions of the radiation transport equations in a static background. The
feasibility of the method in any kind of regime, from diffusion to
free-streaming, is demonstrated by a number of numerical tests and the effect
of the choice of the closure relation on the results is discussed.Comment: 37 pags, 12 figures, accepted for publication in MNRA
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