5,855 research outputs found
X(3915) and X(4350) as new members in P-wave charmonium family
The analysis of the mass spectrum and the calculation of the strong decay of
P-wave charmonium states strongly support to explain the newly observed X(3915)
and X(4350) as new members in P-wave charmonium family, i.e.,
for X(3915) and for X(4350).
Under the P-wave charmonium assignment to X(3915) and X(4350), the
quantum numbers of X(3915) and X(4350) must be and
respectively, which provide the important criterion to test P-wave charmonium
explanation for X(3915) and X(4350) proposed by this letter. The decay behavior
of the remaining two P-wave charmonium states with the second radial excitation
is predicted, and experimental search for them is suggested.Comment: 4 pages, 2 figures, 2 tables. More references and discussions added,
typos corrected. Accepted for publication in Phys. Rev. Lett
Theoretical Overview on the Flavor Issues of Massive Neutrinos
We present an overview on some basic properties of massive neutrinos and
focus on their flavor issues, including the mass spectrum, flavor mixing
pattern and CP violation. The lepton flavor structures are explored by taking
account of the observed value of the smallest neutrino mixing angle
\theta_{13}. The impact of \theta_{13} on the running behaviors of other flavor
mixing parameters is discussed in some detail. The seesaw-induced enhancement
of the electromagnetic dipole moments for three Majorana neutrinos is also
discussed in a TeV seesaw scenario.Comment: References added. arXiv admin note: text overlap with
arXiv:1203.1672, arXiv:1201.2543, arXiv:1203.311
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