Abstract.
The validity of SU(4)-flavor symmetry relations of couplings of charmed D-mesons to light mesons and baryons is examined with the use of 3 P 0 quark-pair creation model and nonrelativistic quark-model wave functions. We focus on the three-meson couplings \(\pi\pi\rho\), \(KK\rho\) and \(DD\rho\) and baryon-baryon-meson couplings \(NN\pi\), \(N\Lambda K\) and \(N\Lambda_{c} D\). It is found that SU(4)-flavor symmetry is broken at the level of 30% in the \(DD\rho\) tree-meson couplings and 20% in the baryon-baryon-meson couplings. Consequences of these findings for DN cross sections and existence of bound states D-mesons in nuclei are discussed.
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Communicated by L. Tolos
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Fontoura, C.E., Haidenbauer, J. & Krein, G. SU(4) flavor symmetry breaking in D-meson couplings to light hadrons. Eur. Phys. J. A 53, 92 (2017). https://doi.org/10.1140/epja/i2017-12289-2
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DOI: https://doi.org/10.1140/epja/i2017-12289-2