منابع مشابه
Decay of light scalar mesons into vector-photon and into pseudoscalar mesons
The decays of a light scalar meson into a vector meson and a photon (S → V γ) are evaluated in the tetraquark and quarkonium assignments of the scalar states. A link with the radiative decays φ → Sγ is established: experimental results for S → V γ will allow to understand if the direct, quark-loop contribution to φ→ Sγ or the kaon-loop contribution is dominant. Also strong decays S → PP -where ...
متن کاملDecay of axial vector mesons into VP and P
We propose a formalism for the decay of the SU (3) nonets of the axial vector mesons of J P C = 1 +− , 1 ++ into a vector meson and a pseudoscalar which is based on a tensor formulation of the vector and axial vector fields. The formulation leads to a good reproduction of the different decay branching ratios and assuming vector meson dominance (VMD) it also leads to good results for the radiati...
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The widths of a glueball decay to two pions or kaons are analyzed in the pQCD framework. Our results show that the glueball ground state has small branching ratio for two-meson decay mode, which is around 10−2. The predicted values are consistent with the data of ξ → ππ,KK if ξ particle is a 2++ glueball. Applicability of pQCD to the glueball decay and comparison with χcJ decay are also discuss...
متن کاملInclusive decay of B mesons into Ds or D ∗ s
We compute the inclusive decay rates b → D − s (D * − s)c including lowest order QCD corrections on the quark legs, and compare with existing CLEO data. Unlike the short distance QCD corrections, that are of higher order, these corrections are of order α s. In the on-shell renormalization scheme and for α s (m b) ∼ = 0.2 we find a correction of −10 % to the inclusive rate computed using factori...
متن کاملNeutral pion decay into in dense Skyrmion matter
Neutrinos and their means of production play an important role in cosmological and astrophysical phenomena [1]. In particular in this paper we shall be concerned with the weak emission of a neutrino-antineutrino pair from a neutral pion, 0 ! , which figures centrally in the pionpole mechanism [2,3] for the process ! 0 ! relevant to the neutrino emission process ! . The latter has been suggested...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1987
ISSN: 0370-2693
DOI: 10.1016/0370-2693(87)91512-7