Bc meson spectrum via Dyson-Schwinger equation and Bethe-Salpeter equation approach

Abstract

We predict the masses of the lowlying Bc mesons with J P = 0 − , 1 − , 0 + , 1 + , 2 + , using a flavor dependent interaction pattern which gives an unified successful description of the light, heavy-light and heavy mesons and is also appliable to the radial excited heavy mesons. The errors are controlled carefully. With the errors from the RL approximation subduced, our predictions are consistent with the lQCD and quark model results, which supports strongly that the flavor dependent interaction pattern is reasonable. Our predictions provide significant guides to the experiment search of the Bc mesons.PACS numbers:

Quark anomalous magnetic moment and its effects on the ρ meson properties

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“…The derivation of QCD's DSEs do not require any assumptions on the running coupling, therefore, both perturbative and non-perturbative facets of the strong interactions can be addressed within this formalism. At the same time, the DSE approach is not restricted to a certain domain of current quark masses [9][10][11][12]. Moreover, hadron observables can be traced down to fundamental pieces, namely propagators and vertices, hence maintaining a clear connection to QCD's fundamental degrees of freedom, quarks and gluons [13][14][15][16].…”