1,034 research outputs found
Search for charmonium and XYZ states in at BESIII
Within the framework of nonrelativistic quantum chromodynamics, we study the
production of charmonium states in at BESIII
with (n=1, 2, 3, and 4), (n=1, 2, and 3), and
(n=1 and 2). The radiative and relativistic corrections are
calculated to next-to-leading order for and wave states. We then argue
that the search for states such as , , ,
and in at BESIII may help clarify the nature
of these states. BESIII can search states through two body process
, where decay to , , or
. This result may be useful in identifying the nature of
states. For completeness, the production of charmonium in at B factories is also discussed.Comment: Comments and suggestions are welcome. References are update
Dichlorido(4,5-diazafluoren-9-one-κ2 N,N′)palladium(II)
The structure of the title compound, [PdCl2(C11H6N2O)], shows a nearly square-planar geometry for the PdII atom within a Cl2N2 donor set
Bosonic Weyl excitations induced by -orbital interactions in a cubic optical lattice
Weyl points exist in a fascinating topological state of matter with linear
band crossings analogous to magnetic monopoles. Tremendous efforts have been
devoted to investigate fermionic topological matters with Weyl points in the
single-particle band dispersion. It remains elusive for realizing
interaction-induced Weyl points, especially for bosons. Motivated by recent
experimental progress in ultracold atoms, we propose a scheme to create Weyl
points for Bogoliubov excitations of a bosonic superfluid in a
three-dimensional cubic optical lattice. The unique design of the lattice leads
to interaction-induced time-reversal symmetry breaking for a -orbital
superfluid, which in turn induces Weyl Bogoliubov excitations. Analogous to
Weyl semimetals of electronic systems, the superfluid also support
topologically protected edge modes due to the bulk-boundary correspondence
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