Observation of the Radiative Decay $D^{*+}\to D^{+}\gamma$

CLEO Collaboration; J. Bartelt et al

arxiv: hep-ex/9711011 · v1 · submitted 1997-11-19 · ✦ hep-ex

Observation of the Radiative Decay D^(*+)to D⁺γ

CLEO Collaboration , J. Bartelt et al This is my paper

classification ✦ hep-ex

keywords gammabranchingdecaydeviationsfindfirstfractionshighest

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We have observed a signal for the decay D*+ -> D+ gamma at a significance of 4 standard deviations. From the measured branching ratio B(D*+ -> D+ gamma)/B(D*+ -> D+ pi0)=0.055 +- 0.014 +- 0.010 we find B(D*+ -> D+ gamma)= 0.017 +- 0.004 +- 0.003, where the first uncertainty is statistical and the second is systematic. We also report the highest precision measurements of the remaining D*+ branching fractions.

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Radiative decay of heavy-light mesons from lattice QCD
hep-lat 2026-02 unverdicted novelty 7.0

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.