منابع مشابه
Four-quark state in QCD
The spectra of some 0++ four-quark states, which are composed of q̄q pairs, are calculated in QCD. The light four-quark states are calculated using the traditional sum rules while four-quark states containing one heavy quark are computed in HQET. For constructing the interpolating currents, different couplings of the color and spin inside the q̄q pair are taken into account. It is found that the ...
متن کاملFinal-State Interactions in Heavy Quark Decays
We study the role played by the final-state interactions (fsi) in heavy quark decays using Pomeron and Regge exchanges to describe high energy scattering. At center of mass energy √ s ∼ 5GeV , Pomeron dominance does not apply. We study the behavior of the decay amplitudes as √ s is varied close to the B mass. We also investigate the behavior of the decay amplitude as √ s → ∞. Our conclusion is ...
متن کاملFinal State Interaction Effects in B+→J/ψ π+ Decay
In this research the exclusive decay of is calculated by QCD factorization (QCDF) method and final state interaction (FSI). First, the decay is calculated via QCDF method. The result that is found by using the QCDF method is less than the experimental result. So FSI is considered to solve the decay. For this decay, via the exchange of mesons are chosen for the intermedi...
متن کاملFour-quark Systems *
In order to understand the binding of four static quarks, flux distributions corresponding to these binding energies are studied in quenched SU(2) and also related to a model for the energies. The potential relevant to string breaking between two heavy-light mesons is measured in quenched SU(3) using stochastic estimates of light quark propagators with the Sheikholeslami-Wohlert action. Our goa...
متن کاملFour-Quark Mesons
The features of a model interpreting the light scalar mesons as diquark-antidiquark bound states and the consequences of its natural extension to include heavy quarks are briefly reviewed. Preprint numbers: FNT/T-2004/22, BA-TH/503/04, CERN-PH-TH/2004-241.
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 1998
ISSN: 1434-6044
DOI: 10.1007/s100520050186