9,108 research outputs found
Study of tau- --> V P- nu(tau) in the framework of resonance chiral theory
In this paper we study two kinds of tau decays: (a) tau- --> (rho pi-,omega
pi-, phi pi-, K*0 K-) nu(tau), which belong to Delta S=0 processes and (b)
Delta S = 1 processes, like tau- --> (rho K-, omega K-, phi K-, \bar{K*0} pi-)
nu(tau), in the framework of resonance chiral theory. We fit the tau- --> omega
pi- nu(tau) spectral function and the invariant mass distribution of omega K in
the process of tau- --> omega K- nu(tau) to get the values of unknown resonance
couplings. Then we make a prediction for branching ratios of all channels.Comment: Published version; References added. 20 pages, 3 figures, 2 table
Analysis of the scalar, axialvector, vector, tensor doubly charmed tetraquark states with QCD sum rules
In this article, we construct the axialvector-diquark-axialvector-antidiquark
type currents to interpolate the scalar, axialvector, vector, tensor doubly
charmed tetraquark states, and study them with QCD sum rules systematically by
carrying out the operator product expansion up to the vacuum condensates of
dimension 10 in a consistent way, the predicted masses can be confronted to the
experimental data in the future. We can search for those doubly charmed
tetraquark states in the Okubo-Zweig-Iizuka super-allowed strong decays to the
charmed meson pairs.Comment: 23 pages, 29 figures. arXiv admin note: substantial text overlap with
arXiv:1708.0454
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