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Radiative Transitions in Heavy Mesons in a Relativistic Quark Model
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Radiative Transitions in Heavy Mesons in a Relativistic Quark Model
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The radiative decays of $D^*$, $B^*$, and other excited heavy mesons are analyzed in a relativistic quark model for the light degrees of freedom and in the limit of heavy quark spin-flavor symmetry. The analysis of strong decays carried out in the corresponding chiral quark model is used to calculate the strong decays and determine the branching ratios of the radiative $D^*$ decays. Consistency with the observed branching ratios requires the inclusion of the heavy quark component of the electromagnetic current and the introduction of an anomalous magnetic moment for the light quark. It is observed that not only $D$, but also $B$ meson transitions within a heavy quark spin multiplet are affected by the presence of the heavy quark current.
Forward citations
Cited by 4 Pith papers
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Radiative decay of heavy-light mesons from lattice QCD
Lattice QCD on physical-pion-mass ensembles yields coupling constants g_D*+D+gamma = -0.204(22) GeV^-1, g_D*0D0gamma = 1.73(37) GeV^-1, and g_Ds*+Ds+gamma = -0.120(14) GeV^-1, with corresponding decay widths.
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The $B^{+(0)} \to \bar D^{0(-)} D^{*}_{s0}(2317)^+$ decays and the molecular structure of $D^*_{s0}(2317)$
Using B→D D K data and a two-parameter model, the authors derive B→D D*_s0(2317) branching fractions that agree with experiment within errors, supporting a sizable DK molecular component of D*_s0(2317).
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Radiative Decays of Vector Mesons with Light-Cone Sum Rules
Light-cone sum rules yield radiative decay widths for ground-state vector mesons that match data where available and exhibit a universal linear dependence on a function A(x) in log coordinates arising from decay-const...
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Radiative Decays of Vector Mesons with Light-Cone Sum Rules
LCSR calculations give M1 radiative widths for K*, D*, B*, D_s*, B_s*, and ψ(2S), matching K* data and yielding a fitted universal log-log scaling with A(2.1).
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